Lab Exam 3

Question 1

Function of Axon Hillock?

Answer 1

Site of action potential initiation

Question 2

Function of Glial cells? (identify the purple image)

Answer 2

Glial cells in the motor neuron perform support for neurons

Question 3

Function of Optic Chiasm?

Answer 3

Crossing over of optic fibers

Question 4

Examples of Ipsilateral reflex?

Answer 4

withdrawal reflex, pupillary reflex

Question 5

Function of Hypoglossal nerve function?

Answer 5

Motor movement of the tongue

Question 6

Function of vestibulochlear nerve(#8)?

Answer 6

hearing sense

Question 7

Function of oculomotor nerve(#3)?

Answer 7

Eye movement. constrict pupil

Question 8

What happens when you damage the cerebellum?

Answer 8

loss of body coordination & balance

Question 9

Know location of interthalamatic adhesion & function?

Answer 9

contents left and right of thalamus

Question 10

List function of the 5 lobes

Answer 10

frontal (personality and behavior). Parietal(proprioception, touch). Temporal(hearing). Occipital(vison). Insula(emotion, taste)

Question 11

Function of myelin sheath?

Answer 11

protects axon, increase speed of action potential.

Question 12

Define reflex?

Answer 12

Action taken as a response to a stimulus, without thought.

Question 13

Muscles that stretch during reflex ?

Answer 13

quadriceps, hamstrings, cardiac muscles.

Question 14

Function of olfactory nerve?

Answer 14

smelling sense

Question 15

Nodes of Ranvier?

Answer 15

the generation of a fast electrical impulse along the axon and ionic exchange

Question 16

Function of conus medullaris in spinal cord?

Answer 16

Inferior most potion of spinal cord

Question 17

Function of Phrenic nerve in spinal cord?

Answer 17

takes motor signals to diaphragm

Question 18

Function of sciatic nerve?

Answer 18

carries motor signal to hamstrings. carries sensory signal to poisterior thigh & leg

Question 19

Function of Obturator in the spinal cord

Answer 19

takes motor and sensory signals to medial thigh

Question 20

What is the collection of spinal nerves?

Answer 20

Cauda equina

Question 21

What dose the ventral root contain?

Answer 21

multipolar neurons that go to skeletal muscles

Question 22

What dose the dorsal root ganglion contain?

Answer 22

unipolar sensory neurons.

Question 23

Filum terminale function?

Answer 23

Pia mater that anchors medullaris to coccyx bone

Question 24

Site of intergration?

Answer 24

Grey mater

Question 25

Someone who suffers from a stroke struggle with what?

Answer 25

balance or coordination. paralysis on one side of the body.

Question 26

Axon terminals function?

Answer 26

release neurotransmitters to send messages to other cells.

Question 27

posterior funiculus function

Answer 27

Myelinated axons that convey info of touch, proprioception

Question 28

lateral funiculus function?

Answer 28

sensory info to the cerebellum and thalamus

Question 29

dendrite function

Answer 29

receive signals from other neurons

Question 30

anterior funiculus function?

Answer 30

balance and coordination. motor commands

Question 31

Pituitary gland function?

Answer 31

produce & releases growth hormone, follicle stimulating hormone

Question 32

Abducens nerve function?

Answer 32

lateral rectus (side eye view)

Question 33

Trigeminal nerve function?

Answer 33

touch sensation, chewing muscles

Question 34

which reflex dose not contain interneuron

Answer 34

Monosynaptic

Question 35

biggest nerve

Answer 35

sciatic nerve