Lab Six

Question 1

Three subdivisions of the afferent PNS

Answer 1

Somatic, visceral, and special sensory receptors

Question 2

Two subdivisions of the efferent PNS

Answer 2

Somatic NS and autonomic NS

Question 3

Function of astrocytes

Answer 3

Blood brain barrier

Question 4

Function of oligodendrocytes

Answer 4

Myelinate CNS axons

Question 5

Function of schwann cells

Answer 5

Myelinate PNS axons

Question 6

Function of satellite cells

Answer 6

Regulate nutrients for neurons and ganglia

Question 7

Four structural subtypes of neyrons

Answer 7

Anaxonic, bipolar, unipolar, and multipolar

Question 8

Three types of general sense receptors

Answer 8

Interoceptors, proprioceptors, exteroceptors

Question 9

Three types of interoceptors

Answer 9

Chemoreceptors, nocioceptors, baroreceptors

Question 10

Two types of proprioceptors

Answer 10

Muscle spindles, golgi tendon organs

Question 11

Four types of exteroceptors

Answer 11

Thermoreceptors, unencapsulated receptors, ruffini corpuscles, lamellated corpuscles

Question 12

Function of interoceptor

Answer 12

Monitoring internal body systems, plus deep pressure, pain and taste

Question 13

Function of exteroceptors

Answer 13

Monitoring external stimuli such as touch, temperature, pressure, sight, smell, hearing

Question 14

Function of proprioceptors

Answer 14

Monitor position and movement of skeletal muscles and joints

Question 15

Seven types of mechanoreceptors

Answer 15

Unencapsulated receptors, tactile corpuscles, ruffini corpuscles, lamellated corpuscles, baroreceptors, muscle spindles, and golgi tendon organs

Question 16

Three meningeal layers in order of superficial to deep

Answer 16

Dura mater, arachnoid mater, pia mater

Question 17

Where is the epidural space found?

Answer 17

Between spinal chord and vertebral column

Question 18

Where does the spinal chord end?

Answer 18

Inferior L1

Question 19

Where do we put a spinal tap/lumbar puncture into?

Answer 19

L3-L4 int he subarachnoid space

Question 20

What is the function of the cauda equina

Answer 20

Cauda equina is the spinal nerve roots distal to tip of spinal chord, and they extend caudally inside vertebral canal to connect to lumbar and sacral segments

Question 21

Four major nerve plexus’

Answer 21

Cervical, brachial, lumbar, sacral

Question 22

Lateral chord branches into….

Answer 22

Musculocutaneous nerve, and medial nerve

Question 23

Medial chord branches into

Answer 23

Median nerve, ulnar nerve

Question 24

Posterior nerve branches into

Answer 24

Axillary nerve, radial nerve

Question 25

Musculocutaneous nerve innervates (4)

Answer 25

Biceps brachii, coracobrachialis, brachialis, and lateral surface of forearm

Question 26

Ulnar nerve innervates (2)

Answer 26

Flexor carpi ulnaris, and medial surface of hand

Question 27

Median nerve innervates (5)

Answer 27

Flexor carpi radialis, palmaris longus, pronators, digital flexors, and anteriolateral surface of hand

Question 28

Axillary nerve innervates (3)

Answer 28

Deltoid, teres minor, and skin of shoulder

Question 29

Radial nerve innervates (6)

Answer 29

Triceps brachii, extensor carpi radialis/brevis/longus, posterior lateral limb, and radial portion of hand

Question 30

Femoral nerve innervates (3)

Answer 30

Quadriceps, sartoris, and iliopsoas

Question 31

Obturator nerve innervates (5)

Answer 31

Gracilis, obturator extermus, adductor magnus/brevis/longus

Question 32

Lumbosacral trunk carries axons from lumbar plexis to the….

Answer 32

Sacral plexus

Question 33

Superior gluteal nerve innervates (3)

Answer 33

Gluteus minimus/medius, and tensor fasciae latae

Question 34

Inferior gluteal nerve innervates (1)

Answer 34

Gluteus maximus

Question 35

Sciatic nerve divides into (2)

Answer 35

Fibular and tibial nerve

Question 36

Fibular nerve divides into (2)

Answer 36

Superficial and deep fibular nerve