brain

Question 1

what happens in brain development

Answer 1

neural stem cells differentiate into neurons and glial cells forming neural tube

Question 2

meninges of the brain

Answer 2

protective barrier of brain and spinal cord
-dura matter
- arachnoid matter
- pia matter

Question 3

dura matter

Answer 3

-connects brain and spinal cord to skull and vertebral column

Question 4

arachnoid matter

Answer 4

loosely covers brain-route of blood vessels/nerves/ cerebrospinal fluid
-collagen fibers span subarachnoid space to connect to pia matter

Question 5

pia matter

Answer 5

rich blood supply (nutrients)
closely envelops the brain, runs deep into fissures

Question 6

cerebrospinal fluid…what is it, where does it circulate, where is it produced, and where is reabsorbed

Answer 6

clear/colorless liquid formed from blood plasma delivers oxygen/glucose while removing waste
- circulates through subarachnoid space and through ventricles
- production at the choroid plexuses
- reabsorbed into blood by arachnoid villus

Question 7

4 major parts of brain

Answer 7

1. brain stem (midbrain, pons, medulla oblongata)
2. diencephalon (thalamus, hypothalamus, pineal gland)
3. cerebrum (cerebral hemispheres)
4. cerebellum

Question 8

medulla oblongata…functions, systems and areas associated with

Answer 8

-messages between spinal cord and brain
- cardiovascular and medullary respiratory system
- contains areas associated with touch, pressure, vibrations, proprioception

Question 9

cranial nerves with medulla oblongata

Answer 9

7,9,10,11, 12

Question 10

pons…functions and cranial nerves

Answer 10

sleep
pontine respiratory center
cranial nerves: v, vi, vii, viii)

Question 11

midbrain….functions and cranial nerves

Answer 11

-movements of eye, visual and auditory processing, pain, sleep
- cranial nerves: iii, iv

Question 12

thalamus function

Answer 12

relays info from sensory receptors

Question 13

hypothalamus

Answer 13

homeostasis, appetite, thirst

Question 14

pineal gland function

Answer 14

melatonin

Question 15

cerebellum…function and regulates

Answer 15

-helps with coordination, balance and equilibrium of skeletal muscles
- regulates posture and balance

Question 16

cerebrum…consists of, separated by, surface has

Answer 16

-superior portion of brain
- left and right cerebral hemispheres…has cerebral cortex
- separated by longitudinal fissures
- gyri and sulci (ridges/grooves)

Question 17

what connects the l and r hemispheres and largest what

Answer 17

corpus callosum…largest bundle of nerve fibers

Question 18

lobes of the brain

Answer 18

frontal: higher cognitive abilites
temporal: auditory
parietal: sensory input
occipital: vision
insula