s3 neuroanatomy intro

Question 1

difference between motor and sensory neurones

Answer 1

motor- info from CNS to periphery

sensory info from periphery TO CNS

Question 2

forebrain consists of?

Answer 2

cerebrum - split into 2 hemispheres

diencephalon- consists of hypothalamus and thalamus
> one on each side. act as relay s stations for sensory info

Question 3

brainstem consists of

Answer 3

midbrain
pons (bulbous|)
medulla

(aside- cerebellum sits behind brainstem)

Question 4

difference between grey and white matter

Answer 4

grey- formed as a result of high density cell bodies

white- myelinated, fatty

Question 5

where is central sulcus found?

Answer 5

between frontal and parietal lobe

Question 6

what is corpus callosum?

Answer 6

packed full of neurone axons (white matter)

> allows communication between hemispheres

Question 7

rostral/caudal meaning

dorsal
ventral

Answer 7

R-towards nose

C- towards tail (back of brain)

D- superior surface of brain (top)

V- inferior surface of brain (base)

Question 8

function of pons?

Answer 8

pons is bulbous region of brainstem

function
- feeding
trigeminal nerve carries motor fibres to muscles of mastication

• help control sleep

Question 9

role of : frontal lobe

Answer 9

• voluntary motor control
• speech production
• social behaviour
• impulse control
• higher cognition (planning)

Question 10

role of : temporal lobe

Answer 10

• language
• emotion
• long term memory
• sense of smell
• hearing
• taste

Question 11

role of : parietal lobe

Answer 11

• somato sensory perception (touch temp vibration)

- spatial awareness

Question 12

role of : occipital lobe

Answer 12

• visual perception

Question 13

role of : cerebellum

Answer 13

• coordination and motor learning

Question 14

pre central gyrus is

Answer 14

primary motor cortex

Question 15

post central gyrus is

Answer 15

primary somatosensory cortex

Question 16

cortical control of spinal nerves?

Answer 16

uni cortical control

• primary motor cortex in one half is responsible for motor control in the contralateral side
• pathway crosses: at level of medulla!

Question 17

cortical control of cranial nerves?

Answer 17

dual cortical control
- cross to the opposite side at the level of the nuclei onto which they communicate
(dominant)
BUT
- most also have a backup > cortical input from the ipsilateral cortex