Chapter 43 - Nervous System

Question 1

Table 43-3 Cranial Nerves, p.913 I-III

Answer 1

I:olfactory(olfactory bulb-sensory); smell II:optic (midbrain-sensory); central & peripheral vision III:oculomotor (midbrain-motor); eye mvmt, lid elevation,*consensual rx (parasympathetic-motor); pupil constriction, ciliary muscles

Question 2

Table 43-3, Cranial Nerves p.913 IV-V

Answer 2

IV:trochlear (lower midbrain-motor); eye mvmt V:trigeminal (pons-sensory); sensation from skin of face, scalp, mucous membranes form mouth & nose (pons-motor); mastication muscles

Question 3

Table 43-3, Cranial Nerves p.913 VI-VII

Answer 3

VI:abducens (inferior pons-motor); eye mvmt (lateral rectus muscle) VII:facial (infer. pons-sensory); ear pain & temp, deep face sensation, taste from 2/3 anterior tongue. (motor); face (expressions) & scalp muscles (parasympathetic-motor); lacrimal, submandibular & sublingual salivary glands.

Question 4

Table 43-3, Cranial Nerves p.913 VIII, IX

Answer 4

VIII:vestibulocochlear (pon-medulla jxt-sensory); hearing, equilibrium IX:glossopharyngeal (medulla-sensory); ear pain & temp., taste & sensations from post. 1/3 of tongue & pharynx, carotid body* (motor);skeletal throat muscles (parasympathetic-motor);parotid glands

Question 5

Table 43-3, Cranial Nerves p.913 X

Answer 5

X:vagus (medulla-sensory); ear pain & temp, pharynx, larynx, thoracic & abdominal sensations. (motor); soft palate, larynx, pharynx muscles (parasympathetic-motor) thoracic & abdominal viscera, secretory glands cells, cardiac & smooth muscle innervation up to splenic flexture.

Question 6

Table 43-3, Cranial Nerves p.913 XI, XII

Answer 6

XI:accessary (medulla[ant. gray horn of cervical spine]-motor);skeletal muscles of pharynx, larynx, sternocleidomastoid, trapezius. XII:hypoglossal (medulla-motor) skeletal muscles of tongue.

Question 7

Chart 43-1, Aging Changes in Nervous System, p.912

Answer 7

*Slower processing time (allow more time to process) *Recent memory loss (repetition & written teaching aids) *Decreased touch sensation (prone to falls, ulcers) *Change in perception of pain (ask to describe details of pain) *Change in sleep patterns (ask what sleep pattern is & make ADL adjustments) *Altered balance &/or decreased coordination (move slowly, use aids) *Increase risk for infection (decrease microglia, hence low immune)