Which of these occurs last during a muscle contraction?
A. The nerve signal reaches the neuromuscular junction
B. Ach is released and opens Na ion channels
C. The sarcomere shortens
D. The myosin binds to the actin
Select your answer:
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Immunology › ViewWhich of the following are typically used as the solute in a dilution?
A. water
B. buffer
C. saline
D. serum
Brain › View
In a cross section of the spinal cord, the peripheral ventral white portion consists of __________ forming nerve tracts, and the central gray portion consists of __________ , dendrites, and axons.
A. Unmyelinated axons, neuron cell bodies
B. Myelinated axons, sensory receptors
C. Myelinated axons, neuron cell bodies
D. Myelinated neurotransmitters, axons