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Physiology part 2
Physiology part 2: week 7-13
| Question | Answer |
|---|---|
| Severe depression can be caused by a deficit in certain brain synapses of | amines |
| The magnitude of the action potential peaks when the sodium channels close | True |
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier | True |
| Which is not associated with the oculomotor nerve? | Closing and opening of the eye (blink reflex) |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus | coccygeal |
| Which division of the autonomic nervous system sends fibers to the heart? | sympathetic and parasympathetic |
| Recognition of antigens by antibodies occurs when an | antigen’s epitopes fit into and bind to an antigen molecule’s antigen-binding site |
| Ciliated cells lining the respiratory tract | help move the mucus blanket toward the pharynx |
| Which blood vessel carries absorbed food from the GI tract to the liver? | Portal vein |