How does a nerve impulse elicit a muscle action potential?
What will be an ideal response
A nerve impulse reaches the synaptic end bulb and causes the release of acetylcholine, which diffuses across the synaptic cleft and binds to and activates acetylcholine receptors on the motor end plate. Binding of acetylcholine opens an ion channel in the acetylcholine receptors allowing Na+ to flow into the cell, which generates an action potential in the muscle cell.
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Edith suffers from severe heartburn. She goes to her physician and is diagnosed with a hiatal hernia. This condition affects her
A. small intestine. B. stomach wall. C. abdominal wall. D. diaphragm.
Which of the following functional areas of the cerebrum is responsible for conscious movements of the body?
a) Broca's area b) Primary visual area c) Somatosensory association area d) Primary motor area e) Primary somatosensory area
Which of the following is NOT a G-protein complex protein?
A. Beta B. Delta C. Alpha D. Gamma E. None of the choices are correct.
Sully is involved in a car accident in which he is rear-ended. The traumatic hyperextension of his head caused
A. whiplash. B. a fracture. C. scoliosis. D. a herniated disc. E. spina bifida.