Neuro 3

Question 1

CNS consists of :

Answer 1

A. Brain- cerebrum, cerebellum (diencephalon in between)
B. Diencephalon- thalamus, hypothalamus
C. Brainstem- medulla oblongata, pons, midbrain
D. spinal cord

Question 2

Brain: grey matter

Found?

Answer 2

-composed of neuron cell bodies and their dendrites

Found- cortex of cerebrum (outer layer)

• Nuclei- collections of neuron cell bodies found deeper in brain
• Central area of the spinal cord

Question 3

Brain: white matter

Found?

Answer 3

neuronal axons with their myelin sheath(gives white color)

Found in every region of CNS

Question 4

Cerebrum

Answer 4

Right and left hemispheres
-cortex- outer layer made of grey matter
-convolutions-numerous folds formed by grooves
>>greatly increase surface area
>>elevated grooves=gyri/gyrus
>>depressed grooves= sulci/sulcus

Question 5

Cerebral cortex has left and right hemispheres, each is subdivided into ____, by ____ .
The lobes are:

Answer 5

5 lobes, deep sulci=fissures :frontal, parental, temporal, occipital, insula (under temporal lobe)

Question 6

The _____ is a structure that is a ______, that ______ the hemispheres.

Answer 6

• corpus collosum, pathway of axons, connects

- axons go in both directions

Question 7

specialization of function in one hemisphere or the other is traditionally called:
Left hemisphere responsible for:
right hemisphere responsible for:

Answer 7

=cerebral dominance
=language and analytical ability
=visual-spatial ability

Question 8

90% of people are:
7% of people are:
which leaves

hemispheres are _____ with each other through corpus collosum.

Answer 8

r-handed,
l-handed
3% split, 1/2 language and analytical in rt hemisphere, other 1/2 language analytical in both hemispheres (the smart, multi tankers)
-continuously communicating

Question 9

Cerebral cortex function
Major areas for:

• in cortex located by their position to the ____
• anterior to central sulcus (most posterior part of frontal lobes) is?

-posterior to the central sulcus (most anterior part of parietal lobes) is?

Answer 9

• sensory perception and voluntary motor control
• central sulcus
• pre-central sulcus
• post central sulcus area

Question 10

Frontal lobe important for:

Answer 10

voluntary motor control of skeletal muscles; personality; concentration planning and decision making; verbal communication; higher intellectual processes

Question 11

parietal lobe important for:

Answer 11

cutaneous and muslcar sensations; somatosthetic interpretation; understanding speech and formulating words to express thoughts and emotions interpretation of textures and shapes

Question 12

temporal lobe important for:

Answer 12

interpretation of auditory sensations; storage(memory) of auditory and visual experiences

Question 13

occipital lobe important for:

Answer 13

integration of movements in focusing the eye; correlation of visual images with previous visual experiences and other sentry stimuli; conscious perception of vision

Question 14

insula important for

Answer 14

memory; sensory (principally pain) and visceral integration