Which structure stores calcium ions for release in the muscle cell?
A) sarcolemma
B) sarcomere
C) sarcoplasm
D) sarcoplasmic reticulum
D
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With the type of lever system exemplified by flexion of the elbow joint when an object is held in the hand, the
a. power arm of the lever is the distance between the elbow joint and the insertion of the biceps muscle. b. load arm of the lever is the distance between the elbow joint and the hand. c. velocity and distance moved by the hand is amplified at the expense of the biceps muscle having to exert considerably greater force than the actual load that is moved. d. two of these answers. e. all of these answers.
Minerals required by the body in moderate amounts include all of the following EXCEPT ________
A) sulfur and potassium B) sodium and chlorine C) calcium and phosphorus D) iron and selenium
The spinal nerves are all mixed nerves.?
Indicate whether the statement is true or false
A traumatic injury that results in 60% muscle fiber tear and swelling would be considered which of the following?
a. First-degree strain. b. Second-degree strain. c. Third-degree strain. d. Fourth-degree strain.