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A&P2 Ch 21
| Question | Answer |
|---|---|
| The spinal root that has a noticeable swelling is the _____ | dorsal root |
| The dorsal root ganglion contains: | sensory neuron cell bodies |
| the phrenic nerve innervates the: | diaphragm |
| the femoral nerve arises from the _____ _____ | lumbar plexus |
| the lower end of the spinal cord is called the ____ ____ | cauda equina |
| there are 31 pairs of spinal nerves, all of which are composed of both ____ and ____ fibers | motor and sensory |
| herpes zoster (shingles) is a unique _____ infection that almost always affects the skin of a single dermatome | viral |
| each skin surface area supplied by sensory fibers of a given spinal nerve is called a _____, a name that means "skin section" | dermatome |
| _____ is a term referring to a skeletal muscle group innervated by motor neuron axons from a given spinal nerve | myotome |
| the ____ ____ is found deep within the shoulder | brachial plexus |
| facial expressions | facial |
| sense of smell | olfactory |
| peristalsis | vagus |
| hearing and balance | vestibulocochlear |
| vision | optic |
| chewing | trigeminal |
| swallowing | glossopharyngeal |
| regulation of pupil size | oculomotor |
| innervation of the superior oblique muscle of the eye | trochlear |
| abduction of the eye | abducens |
| tongue movements | hypoglossal |
| shoulder movements | accessory |
| somatic effectors are: | skeletal muscle |
| when the outer sole of the foot is stimulated, a normal infant will extend the great toe. This is called the ____ ____ | babinski reflex |
| what is the neurotransmitter in a somatic motor pathway? | acetylcholine |
| Do abducens have a sensory function? | NO |
| What nerve is a mixed nerve that arises from the medulla and is distributed to numerous organs? | vagus |
| parasympathetic innervation of the heart is assisted by the ____ ____ | vagus nerve |
| what nerve is involved in smiling and frowning? | facial |
| The _____ nerve assists with balance or equilibrium | vestibulocochlear |
| tic douloureux is damage to the _____ nerve | trigeminal |
| the most common cause of peripheral nerve damage is the U.S. and Europe is _____ _____ | diabetes mellitus |
| the somatic motor nervous system includes all of the ____ motor pathways outside the CNS | voluntary |
| somatic reflexes are contractions of _____ muscles | skeletal |
| The _____ nerves supply the diaphragm. Any disease or injury to the spinal cord between the 3rd and 5th cervical segments may paralyze the ____ nerve & therefore the diaphragm as well | phrenic |
| 12 pairs | cranial nerves |
| dermatome | spinals nerves |
| vagus | cranial nerves |
| shingles | spinal nerves |
| 31 pairs | spinal nerves |
| optic | cranial nerves |
| C1 | spinal nerves |
| plexus | spinal nerves |
| myotome | spinal nerves |
| accessory | cranial nerves |
| 31 pairs of spinal nerves are connected to the ____ ____ | spinal cord |
| there are ______ cervical nerve pairs | eight |
| there are _____ thoracic nerve pairs | twelve |
| there are _____ lumbar nerve pairs | five |
| There are ____ sacral nerve pairs | five |
| how many coccygeal nerve pairs are there? | one |
| where is the cervical plexus located? | Deep within the neck |
| the ____ ____ is made up of ventral rami of C1 through C4 and a branch of the ventral ramus of C5 | Cervical plexus |
| where is the brachial plexus located? | deep within the shoulder |
| the ____ ____ is made up of ventral rami of C5 through T1 | Brachial plexus |
| the ____ ____ exits the cervical plexus and inervates the diaphragm | phrenic nerve |
| the ____ ____ gives rise to the femoral nerve | lumbar plexus |
| what nerve is not involved in proprioception-awareness of the position of ones body | vagus nerve |
| An important principle of somatic motor pathways states that the axon of the last somatic motor neuron stimulates effector cells by means of the neurotransmitter _____ | acetycholine |
| the ____ ____ ____ is a segmental reflex because the impulses that mediate it enter and leave the same segment of the cord. | knee jerk reflex |
| an ipsilateral reflex that does not have to involve the brain | knee jerk relfex |
Created by:
alucero