Exam #3 Questions

Question 1

How many pairs of cranial nerves?

Answer 1

12 (some sensory, motor, & mixed)

Question 2

How many pairs of spinal nerves?

Answer 2

31 (all mixed)

Question 3

Name the 4 CNS neuroglia cells and functions.

Answer 3

1. astrocytes - form blood-brain barrier (BBB)
2. ependymal - produce cerebral spinal fluid (CSF) & form choroid plexus
3. microglial - respond to infection
4. oligodendrocytes - create myelin sheath

Question 4

Name the 4 main parts of the brain.

Answer 4

1. cerebrum
2. cerebellum
3. brain stem
4. diencephalon

Question 5

The somatic sensory nerves innervate with __________.

Answer 5

skeletal muscles.

Question 6

The autonomic sensory nerves innervate with __________, __________, & __________.

Answer 6

smooth muscles, heart, & glands.

Question 7

Which 2 glial cells produce the myelin sheath?

Answer 7

1. oligodendrocytes in CNS
2. Schwann cells in PNS

Question 8

Which 4 cranial nerves serve function of the eye?

Answer 8

1. optic (CNII)
2. oculomotor (CNIII)
3. troclear (CNIV)
4. abducens (CNVI)

Question 9

Name the 3 structures of the vascular tunic (middle layer) of the eye.

Answer 9

1. choroid
2. ciliary body - ciliary muscles and suspensory ligaments
3. iris (defines pupil)

Question 10

Name the 3 components of the inner ear.

Answer 10

1. cochlea
2. vestibule
3. semicircular canals

Question 11

Which cranial nerve operates olfactory epithelium?

Answer 11

olfactory (CNI)

Question 12

Which 4 muscles make up the quadriceps?

Answer 12

1. rectus femoris
2. vastus medialis
3. vastus lateralis
   4.vastus intermedius

Question 13

Which 4 muscles make up the rotator cuff?

Answer 13

1. supraspinatus
2. infraspinatus
3. teres minor
4. subscapularis

Question 14

Which 3 muscles make up the hamstrings?

Answer 14

1. biceps femoris
2. semimembranosus
3. semitendinosus

Question 15

Which 4 muscles make up the abdominal wall?

Answer 15

1. rectus abdominus
2. transversus abdominus
3. internal oblique
4. external oblique