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Week 8
Human Physiology
Question | Answer |
---|---|
Which of the following is not associated with the oculomotor nerve? | Closing and opening of the eye (blink reflex) |
How does a dually innervated autonomic effector differ from a singly innervated autonomic effector? | A dually innervated effector receives input from both sympathetic and parasympathetic pathways. A singly innervated autonomic effector receives input from only the sympathetic division. |
Sympathetic responses generally have widespread effects on the body because: | preganglionic fibers synapse with several postsynaptic fibers. |
Once inside the sympathetic chain ganglion, the preganglionic fiber may: | do all of the above. |
Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus. | coccygeal |
The vomiting reflex is mediated by the: | medulla. |
A mixed nerve is one that: | carries both sensory and motor fibers. |
Which of the following is a correct statement? | There are 5 lumbar nerve pairs. |
Most effectors of the autonomic nervous system are dually innervated by sympathetic and parasympathetic neurons. | True |
If the dorsal root ganglia of the spinal nerve were destroyed, a person would lose _____ related to that pathway. | sensory perception |