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1 Signaling in Muscle Contraction - PMC - NCBI
Calcium triggers contraction in striated muscle. (A) Actomyosin in striated muscle. (1) Striated muscle in the relaxed state has tropomyosin covering myosin- ...
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2 Calcium: For Strong Bones, Muscle Function, And So Much ...
Inside the muscle, calcium facilitates the interaction between actin and myosin during contractions (2,6). Recall the protein structures of tropomyosin and ...
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3 Muscle cells need calcium ions | Max-Planck-Gesellschaft
Muscle contraction is known to be regulated by calcium. An action potential generated by a motor neuron propagates on the muscle cell ...
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4 Calcium ions - The School of Biomedical Sciences Wiki
Ca2+ ions play an important role in muscle contraction by creating interactions between the proteins, myosin and actin. The Ca2+ ions bind to ...
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5 Why Is Calcium Important to Muscle Function? - SportsRec
Upon nervous system excitation for a contraction, calcium is released into the fiber. It binds with troponin and stimulates it to move ...
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6 Calcium and muscle contraction: the triumph and tragedy of ...
In 1961, Ebashi (9) showed that a minute amount of Ca2+ was essential for actomyosin superprecipitation and the associated acceleration of ATP ...
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7 The Role of Calcium in the Human Heart: With Great Power ...
Calcium particles enter the heart muscle cells during each heartbeat and contribute to the electrical signal that coordinates the heart's ...
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8 5. Calcium and the Biochemistry of Muscle Contraction ...
 in this video
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9 Calcium is important in skeletal muscle contraction ... - Toppr
The skeletal muscle contraction is caused by calcium ions. These calcium ions bind to the protein complex troponin in order to remove the masking of active ...
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10 What Minerals Contract a Muscle? - Healthy Eating | SF Gate
Calcium and magnesium work together to control muscle contraction. Both minerals interact with the proteins actin and myosin -- structural proteins that shorten ...
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11 042 How Calcium ion release results in Muscle Contraction
Interactive Biology
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12 A focus on extracellular Ca2+ entry into skeletal muscle - Nature
ATP supplies the energy, as described above, but what does calcium do? Calcium is required by two proteins, troponin and tropomyosin, that regulate muscle ...
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13 Calcium | The Nutrition Source
Calcium is a mineral most often associated with healthy bones and teeth, although it also plays an important role in blood clotting, helping muscles to ...
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14 Calcium regulation of muscle contraction -
In the case of. Mercenaria myofibrils, actin has no effect; calcium is needed for activation. The burst of proton liberation upon addition of calcium is due to ...
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15 Muscle Contraction - BioNinja
Calcium ions and the proteins tropomyosin and troponin control muscle contractions AND The contraction of the skeletal muscle is achieved by the sliding of ...
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16 Calcium and Vascular Smooth Muscle Contraction
amount needed in skeletal muscle.10-" Fur- thermore, the mechanism of action of calcium in vascular smooth muscle contractile protein.
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17 Calcium and smooth muscle contraction | SpringerLink
Calcium has been a central player in mediating smooth muscle contraction through binding with calmodulin, although there is evidence showing that under special ...
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18 BIOS 20173 Week 3 Flashcards - Quizlet
Why is calcium necessary for muscle contraction? Calcium is needed to detach the myosin from the actin. Calcium is needed to allow the muscle fiber to ...
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19 Columbia Researchers Discover New Mechanism For Muscle ...
Muscle cells use calcium to control the contraction and relaxation of muscles. The more calcium that enters the cell through calcium channels in ...
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20 1) Calcium is one of the electrolytes important in muscle ...
1) Calcium is one of the electrolytes important in muscle contraction. Large amounts of calcium must be available inside the cell to promote the development of ...
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21 Sarcoplasmic reticulum | Description & Function | Britannica
In cardiac muscle cells, calcium is an important effector of the coupling between cardiac depolarization (excitation) and cardiac contraction ( ...
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22 The role of calcium in muscle contraction isA. To ... - Vedantu
In muscle contraction, calcium ions play an important role by building interactions between proteins, myosin and actin. The Ca2+ ions bind to the C portion ...
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23 Molecule of the Month: Calcium Pump - PDB-101
Our muscle cells use calcium ions to coordinate this massive molecular effort. When a muscle cell is given the signal to contract from its associated nerves, it ...
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24 Calcium in diet: MedlinePlus Medical Encyclopedia
Calcium is one of the most important minerals for the human body. It helps form and maintain healthy teeth and bones. A proper level of ...
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25 Calcium puts myosin to work (video) - Khan Academy
› ... › Muscular system
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26 Calcium, Nutrition and Bone Health - UAB Medical West
Calcium affects muscles by regulating contractions. This includes regulating the heart beating because the heart is a muscle that pumps blood.
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27 Runner's World: 5 Signs You're Not Getting Enough Calcium
The first common symptom is experiencing frequent muscle cramps. Because calcium helps with muscle contraction, low levels of the mineral means ...
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28 10.3: Muscle Fiber Contraction and Relaxation
The release of calcium ions initiates muscle contractions. Watch this video to learn more about the role of calcium.
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29 Calcium: 8 Fast Facts You Should Know - Healthline
May improve bone health ... Calcium plays important roles in your body and is critical for muscle contraction, as well as keeping your bones strong and healthy. A ...
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30 Calcium is important in skeletal muscle contraction ... - Byju's
The correct option is B binds to troponin to remove the masking of active sites on actin for myosin nbsp;The muscle contraction cycle is triggered by ...
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31 How does the increase in intracellular calcium cause ...
Changes in intracellular Ca2+ concentration play an important role in the excitation-contraction-relaxation cycle of skeletal muscle.
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32 The Importance of Calcium to Children (May)
Bone calcium begins to decrease in young ... Calcium is important in muscle contraction, ... CALCIUM IS A KEY BUILDING BLOCK FOR STRONG, HEALTHY BONES.
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33 Calcium: Health benefits, foods, and deficiency
Calcium helps regulate muscle contraction. When a nerve stimulates a muscle, the body releases calcium. The calcium helps the proteins in muscle carry out ...
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34 The Mechanism of Muscle Contraction - Meat Science
To evaluate the nervous response needed to cause calcium to be released for muscle to contract and the steps necessary for muscle relaxation.
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35 Calcium for Sports & Fitness - Kaiser Permanente
In addition to being important for strong bones, calcium is required for muscle contraction. Without enough calcium you may experience muscle cramps.
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36 Describing the Primary Role of Calcium Ions in Muscle ...
Oct 12, 2021
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37 growth of ideas: Role of calcium as activator of cardiac ...
Although Ringer had shown that calcium is essential for the heart to contract (see above), for more than 75 years the mechanism by which extracellular calcium ...
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38 Overview of Calcium's Role in the Body - Merck Manuals
Calcium is essential for the following: Formation of bone and teeth. Muscle contraction. Normal functioning of many enzymes. Blood clotting.
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39 Ca2+ entry, efflux and release in smooth muscle - SciELO Chile
Figure 1: The link between Ca2+ entry through L-type Ca2+ channels in the plasma membrane and uterine contraction. Ca-calmodulin activates mlck (myosin light ...
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40 Muscle Contractions | Learn Muscular Anatomy - Visible Body
The calcium ions diffuse into the muscle fiber. The relationship between the chains of proteins within the muscle cells changes, leading to the contraction. 3.
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41 T-tubule biogenesis and triad formation in skeletal muscle and ...
The excitation-contraction (EC) coupling, i.e. signal transmission from the sarcolemma to the actin/myosin apparatus, is mediated by a second ...
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42 11 Nutrients Your Body Needs to Build Muscle - Daily Burn
Calcium does more than help build strong bones and prevent osteoporosis. Koff says the mineral is responsible for triggering muscle contraction.
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43 Muscle Contraction: Regulation - Squire - Wiley Online Library
Calcium ions bind to troponin and thus cause or allow the tropomyosin strands on the actin filament to move so that the part of the actin ...
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44 Muscle Stimulation - The Histology Guide - University of Leeds
Stimulation of the muscle fibre, causes a wave of depolarisation to pass down the t-tubule, and the SR to release calcium ions into the sarcoplasm. Calcium is ...
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45 A troponin switch that regulates muscle contraction by stretch ...
The muscles are activated by periodic stretches at low Ca2+ levels. The same muscles also give isometric contractions in response to higher Ca2+. We show that ...
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46 Major Minerals: Calcium - SparkNotes
Finally, Calcium also has a vital role in muscle contraction and relaxation. In muscle fibers, calcium ions are released from a tubular reticulum and activate ...
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47 Calcium-dependent mechanisms of regulation of smooth ...
target proteins, the most important of which in the context of smooth muscle contraction is the enzyme myosin light chain kinase.
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48 Solved Why is Calcium important in the regulation of muscle
b. The presence of calcium allows contractions to occur. c. The presence of calcium prevents contractions from occurring d. Calcium induces troponin to move ...
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49 The Role Of Ions In Muscle Excitation And Contraction
(depolarization) initiates the contraction of the muscle cell as well as the ... many so-called "impermeable" ions such as sodium, calcium, magnesium, ...
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50 Sarcoplasmic reticulum - Wikipedia
This means that small increases in calcium ions within the cell are easily detected and can bring about important cellular changes (the calcium is said to ...
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51 10.3 Muscle Fiber Excitation, Contraction, and Relaxation
In skeletal muscle, cross-bridge formation and contraction requires the presence of calcium (Ca++) inside the muscle cell. Excitation signalling of action ...
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52 MCAT Biology - Varsity Tutors
Calcium is essential for muscle contraction because it allows for the removal of tropomyosin from the actin binding sites. Depletion of calcium, however, ...
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53 Chapter 39 - Muscle Fiber Contraction and Relaxation - BIO 140
A muscle may also stop contracting when it runs out of ATP and becomes fatigued. The release of calcium ions initiates muscle contractions.
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54 Vascular Smooth Muscle Contraction and Relaxation
An increase in free intracellular calcium can result from either increased flux of calcium into the cell through calcium channels or by release of calcium from ...
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55 Kinase activation and smooth muscle contraction in the ...
Sustained vascular smooth muscle contraction is important for maintaining ... independent of changes in intracellular calcium concentration ([Ca2+]i) and ...
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56 Tetany: What Is It, Causes, Symptoms, Treatment, and More
Tetany is a symptom characterized by the involuntary contraction of muscles that usually results from low calcium levels in the blood (i.e., hypocalcemia).
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57 Muscle Fiber Contraction and Relaxation
This triggers the release of calcium ions (Ca++) from storage in the sarcoplasmic reticulum (SR). The Ca++ then initiates contraction, which is sustained by ATP ...
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58 What is Calcium? - Food Insight
Calcium is essential for proper muscle contraction, including the beating of the heart. Its presence acts as a signal for the muscle fibers ...
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59 Muscle Contraction and Locomotion | Boundless Biology
Muscle contraction: Calcium remains in the sarcoplasmic reticulum until released by a stimulus. Calcium then binds to troponin, causing the troponin to change ...
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60 5 Muscle-Building Nutrients That Aren't Protein
"Calcium regulation is an essential part of muscle contraction and therefore, building muscle," says Jim White, owner of Jim White Fitness ...
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61 Role of Calcium in the Human Body - Truebasics Blog
Calcium stimulates numerous Calcium-dependent signaling pathways that regulate muscle contraction in skeletal and cardiac muscle. It triggers ...
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62 Calcium assays: at the centre of biology - BMG Labtech
For instance, calcium is important in the transmission of nerve impulses via neurotransmitter release but also aids in triggering muscle ...
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63 Muscle - Medical Cell Biology
Contraction of Smooth Muscle ... Myosin filaments in smooth muscle are also activated by increases in cytosolic calcium but by a different mechanism than in ...
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64 Ca2+ and Mg2+ - Pitt Medical Neuroscience
Ca2+ is an important physiologic mediator, and participates in muscle contraction, neuronal function, and regulation of enzymatic processes.
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65 Calcium-induced release of calcium in muscle: 50 years of ...
An essential contribution by Klein et al. (1996) showed that Ca2+ sparks of skeletal muscle can be elicited by elevated [Ca2+] in the cytosol, ...
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66 calcium movement in the sarcomere and its connection to
The human body uses calcium as an activator for muscle contraction. ... The binding of calcium to troponin is of special importance because.
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67 Human Physiology - Muscle
This decline in ATP levels in a muscle causes MUSCLE FATIGUE. Even though calcium is still present (and a nervous impulse is being transmitted to the muscle), ...
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68 10.3 Muscle Fiber Contraction and Relaxation - OpenStax
Figure 10.11 Skeletal Muscle Contraction (a) The active site on actin is exposed as calcium binds to troponin. (b) The myosin head is attracted ...
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69 5 Signs You're Not Getting Enough Calcium - Runner's World
1. Your muscles are always cramping up ... Because calcium helps with muscle contraction, low levels of the mineral means you might experience ...
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70 Contraction of Cardiac Muscle - TeachMePhysiology
Released calcium leads to a calcium spike. Calcium binds to troponin C and thus activating the cross-bridge cycling mechanism for contraction.
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71 Clarification of Dynamic Structural Change of Calcium Pump
Muscles contract when Ca2+ ions are released from the sarcoplasmic reticulum around myofibrils; in contrast, muscles relax when Ca2+ ions are pumped back into ...
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72 Calcium - Better Health Channel
It is also important for the health and functioning of nerves and muscle tissue. Good sources of calcium include dairy foods like milk, yoghurt and cheese, ...
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73 Why Is Calcium Important For Muscle Contraction - Hansford Parts ...
Psychiatric symptoms is muscle contraction is best choices about half of muscles contract in bones become active. This browser cannot rebind to calcium is ...
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74 Contraction and rigor mortis - Animal Biosciences |
The sarcoplasmic reticulum initiates muscle contraction by releasing calcium ions when prompted to do so by the transverse tubular system.
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75 5. Use of ATP by muscle cells.
When a skeletal muscle fiber gets a nerve signal, the SR releases its stored calcium, handholds for myosin strands are exposed, and the muscle fiber contracts.
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76 How does calcium help maintain normal muscle contraction?
Calcium plays a very crucial role when it comes to muscle contraction. It triggers contraction by reaction with regulatory proteins that in the absence of ...
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77 Minerals: Their Functions and Sources
Potassium. Needed for proper fluid balance, nerve transmission, and muscle contraction. Meats, milk, fresh fruits and vegetables, whole grains, legumes ; Calcium.
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78 Calcium and Bone Health -
Almost every cell in the body uses calcium in some way, including the nervous system, muscles, and heart. Your body uses calcium to build healthy bones and ...
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79 Muscle Physiology
6. Transport of calcium ions back into the sarcoplasmic reticulum. This involves the active transport of calcium using calcium ion pumps in the membrane of the ...
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80 19.4 Muscle Contraction and Locomotion – Concepts of Biology
If present, calcium ions bind to troponin, causing conformational changes in troponin that allow tropomyosin to move away from the myosin binding sites on actin ...
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81 Excitation-contraction coupling in myocardium - UpToDate
The cyclical nature of cardiac contraction and the importance of ... of muscular contraction) or lusitropy (the ability of the muscle to ...
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82 Mechanism of the calcium-regulation of muscle contraction
The author reviewed the research that led to establish the structural basis for the mechanism of the calcium-regulation of the contraction of striated ...
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83 Calcium Movement in Muscle Contraction | Free Essay Example
Calcium is an essential element within the process of muscle contraction due to its direct involvement in the interaction between muscle ...
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84 Role of Calcium in Airway Smooth Muscle Contraction and ...
essential for muscle to contract and secre- tory cells, including mast cells and mucous glands, to release their secretory products. Calcium is thus central ...
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85 Calcium | Linus Pauling Institute | Oregon State University
Calcium is a major constituent of bones and teeth and also plays an essential ... For example, when a nerve impulse stimulates a muscle fiber to contract, ...
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86 Muscle Function, Diet, and Metabolism in Active Horses
More than dietary energy is necessary to keep horses moving smoothly as they train and perform. Electrolytes such as calcium are important in ...
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87 The Physiology of Skeletal Muscle Contraction - PT Direct
When the muscle is stimulated to contract by the nerve impulse, calcium channels open in the sarcoplasmic reticulum (which is effectively a storage house ...
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88 Vascular smooth muscle contraction - CUSABIO
Contractile stimuli such as mechanical, electrical, and chemical stimuli lead to an increase in calcium concentration, which causes calcium influx to ...
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89 Calcium in Muscle Activation. A Comparative ... - Science
Muscle Contraction: Calcium in Muscle Activation. A Comparative Approach. Johann Caspar Rüegg. Springer- Verlag, New York, 1986. xiv, 300 pp., illus. $98.
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90 Medical Definition of Calcium - RxList
Calcium is essential for healthy bones and is also important for muscle contraction, heart action, and normal blood clotting. Food sources of calcium ...
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91 Inositol trisphosphate, calcium and muscle contraction - JSTOR
Inositol trisphosphate, calcium and muscle contraction. BY A. P. SOMLYO1, J. W. WALKER2, Y. E. GOLDMAN', D. R. TRENTHAM2, F.R.S.,.
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92 Tetany: What It Is, Causes, Symptoms & Treatment
Tetany is a symptom that involves involuntary muscle contractions and overly stimulated peripheral nerves. It's caused by electrolyte ...
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93 Hypocalcemia or Low Calcium Levels in Cats
Calcium is a mineral that is found in small quantities throughout the body and plays an important role in muscle contraction, transmission of nerve impulses ...
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94 Calcium - ionized - UCSF Health
All cells need calcium in order to work. Calcium helps build strong bones and teeth. It is important for heart function. It also helps with ...
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95 Musculoskeletal System for the MCAT: Everything You Need ...
These Ca²⁺ ions play an important role in muscle contraction. ... the unhindered flow of calcium ions through gap junctions allows for ...
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