What is the power stroke?
A. a protein found along the groove of the F-actin double helix
B. a T tubule and two adjacent terminal cisternae
C. the combination of myosin heads with active sites on actin molecules
D. the movement of myosin head while attached to actin myofilament
E. after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism
D
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The artist who used dissections to improve his drawings and paintings was
A. Vesalius. B. Da Vinci. C. Hippocrates. D. Galen.
Transmitting an impulse from one neuron to another involves a(n)
A. impulse stimulating presynaptic dendrites to release a neurotransmitter into a synaptic cleft. B. impulse stimulating a presynaptic axon to release a neurotransmitter into a synaptic cleft. C. neurotransmitter traveling from postsynaptic axons across a synapse to presynaptic dendrites or a cell body. D. neurotransmitter traveling from presynaptic dendrites across a synapse to postsynaptic axons or a cell body.
The muscle that originates from the superior surface of the pubis around the symphysis is the
A) internal oblique. B) external oblique. C) rectus abdominis. D) transversus abdominis. E) scalene.
This figure shows superficial and deep arm muscles. What muscle does number 2 indicate?
A. Biceps brachii B. Brachialis C. Coracobrachialis D. Brachioradialis E. Triceps brachii