The structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction are (the)
A) myofibrils.
B) sarcoplasm.
C) myoneural junctions.
D) All of the answers are correct.
E) None of the answers are correct.
A) myofibrils.
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Fibrous cartilage discs that act as shock absorbers in joints are called
A) menisci. B) bursae. C) tendons. D) intervertebral discs. E) synovial capsules.
How many primary oocytes does a female have by the onset of puberty?
A. 400,000 B. 500,000 C. 1 million D. 2 million E. 1,000
Development of the heart commences in the ________ week.
A. eighth B. first C. tenth D. third E. fifth
____________________ and ____________________ are referred to as contractile proteins, whereas ____________________ and ____________________ are referred to as regulatory proteins
Fill in the blank(s) with correct word