The medial malleolus
A. is the proximal portion of the tibia.
B. forms the medial side of the ankle joint.
C. articulates with the calcaneus.
D. is part of the arch of the foot.
E. is on the lateral side of the leg.
B
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Describe calcium's role in the contraction of the sarcomere in skeletal and cardiac muscle tissues. Include the following in your answer : sarcomere, myosin, actin, myosin-binding sites, cross bridge, sarcoplasmic reticulum, ATP, ADP and Pi, troponin, tropomyosin, and Ca2+ channels
What will be an ideal response?
Which of the following statements regarding myosin in skeletal muscle is TRUE?
A. Myosin cross-bridge heads contain two binding sites, one for actin and one for tropomyosin. B. Myosin is an ATPase. C. The rate of ATP hydrolysis by myosin is the same in all types of skeletal muscle. D. All of the myosin cross-bridge heads in a thick filament are oriented and rotate in the same direction. E. Troponin covers the binding site on myosin molecules until Ca2+ binds to troponin to remove it from its blocking position.
One of the primary roles of the cerebellum is to compare a given program for movement with the actual movement as it occurs and to make adjustments in the movement and in the program
Indicate whether the statement is true or false.
Which of the following layers forms the bulk of the heart wall?
A. epicardium B. pericardium C. endocardium D. myocardium E. visceral pericardium