Misc

Question 1

Afferent nerves conduct nerve impulses from

Answer 1

Receptors to CNS (spinal cord)

Question 2

How to effectors or neurons in general communicate

Answer 2

Using neurotransmitters that diffuse across synaptic clefts

Question 3

What do efferent motor neurons do

Answer 3

Carry info from brain to PNS

Question 4

What does length of axon affect

Answer 4

How long an impulse travels not how fast

Question 5

What is tapered end of spinal cord

Answer 5

Conus medullaris

Question 6

What’s the roots of spinal nerves hanging inferior live from the inferior end of the spinal cord in the vertebral column?

Answer 6

Cauda equina

Question 7

What’s extension of pia mater that anchors spinal cord to coccyx

Answer 7

Filum terminale

Question 8

What nerves does dorsal root hold

Answer 8

Only sensory

Question 9

What nerves does the ventral root hold?

Answer 9

Only motor nerves

Question 10

What’s the ventral and dorsal Ramus?

Answer 10

Contains both sensory and motor nerves but travels to front and back of body

Question 11

What is posterior white columns

Answer 11

Dorsal funiculus and is where first order sensory neurons for touch and pressure travel to before terminating at the dorsal column nuclei in the lower medullar

Question 12

What does central canal contain

Answer 12

CSF

Question 13

What is located in anterior grey horns

Answer 13

Cell bodies of motor neurons

Question 14

What’s located in lateral grey horns

Answer 14

Autonomic motor neurons

Question 15

What’s located in dorsal grey horns

Answer 15

Sensory neurons cell bodies

Question 16

What’s part of diencephalon

Answer 16

hypothalamus, thalamus, subthalamus, epithalamus

Question 17

Does cerebellum coordinate movement

Answer 17

Yes it does not make movement smooth that’s the job of basal ganglia

Question 18

Cerebellum is ipsilateral so lesion on left side

Answer 18

Results in lesion of left side movement error

Question 19

Function of brain stem

Answer 19

Transports impulses that carry info

Question 20

Where’s Meissners and Paccinians located in

Answer 20

M - dermal papillae
P - subcutaneous and submucousal tissue

Question 21

What does medial lemniscus contain and what does it connect

Answer 21

Has 2nd order sensory neurons and connects gracile and cuneate nuclei to thalamus

Question 22

Where are cell bodies for upper motor neurons located?

Answer 22

Planning part of cortex / primary motor cortex

Question 23

medial lemniscal system of discriminative info pathway

Answer 23

1st from periphery then synapses to 2nd at dorsal funiculus at lower medulla (decussation at int arcuate fibres). 3rd synapse at hypothalamus then out through internal capsule to sensory cortex

Question 24

spinothalamic tract pathway of non-desc information

Answer 24

1st order from periphery and terminates at substantia gelatinosa where synapse occurs (2nd). Decussates at ant. white commisure travels to ventral funiculus and 3rd synapse at thalamus. then rest

Question 25

What part of the frontal lobe is brocas area in?

Answer 25

Planning or premotor

Question 26

what fibres do dorsal and ventral root have

Answer 26

dorsal - Carries sensory information from the periphery to spinal cord
ventral - Carries motor information from the spinal cord to the muscles