Describe the H zone of the sarcomere. The H zone:
A.
contains both myosin and actin myofilaments
B.
contains only actin myofilaments
C.
contains only myosin myofilaments
A
Anatomy & Physiology
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When the ventricles and atria rest as the atria fill with blood, this is called ________.
A. epistole B. myostole C. diastole D. systole
Anatomy & Physiology
The normal pH range of urine is ________
A) 7-9 B) 3.5-7 C) 4.5-8 D) 1-4.5
Anatomy & Physiology
The first amino acid put in place when a protein is being synthesized at a ribosome is
A. tryptophan. B. methionine. C. proline. D. cysteine. E. glycine.
Anatomy & Physiology
At peak levels of muscle exertion, the mitochondria can supply ________ of the energy required by the muscle
A) all B) 80 percent C) more than half D) only about one-third E) only about 10 percent
Anatomy & Physiology