Nervous control of gastric secretion is provided by ________
A) somatic neurons in the spinal cord
B) the vagus nerve and enteric plexus
C) the reticulospinal and vestibulospinal tracts
D) the rubrospinal tracts
B
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Which of the following is the correct sequence of events for muscle contractions?
What will be an ideal response? A) motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke, sliding of myofilaments B) neurotransmitter release, muscle cell action potential, motor neuron action potential, release of calcium ions from SR, sliding of myofilaments, ATP-driven power stroke C) muscle cell action potential, neurotransmitter release, ATP-driven power stroke, calcium ion release from SR, sliding of myofilaments D) neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke
A wide receiver for a college football team pulled a hamstring muscle. What muscles could be affected and what would the effect be?
What will be an ideal response
Actin and myosin filaments are most abundant in ____ cells
a. epithelial b. muscle c. nerve d. red blood e. white blood
When contraction occurs,
A) The H and I bands get smaller. B) The width of the A band remains constant. C) The Z lines move closer together. D) A, B, and C E) none of the above