four pats of the brain notes

Question 1

-most superior part of the brain

60% of total brain weight

Answer 1

Cerebral Hemisphere

Question 2

*gray matter is how thick

Answer 2

• outer layer only 2-4 mm thick

Question 3

*gray matter

Answer 3

• cell bodies of neurons involved in higher level functions

- also known as cerebral cortex

Question 4

white matter-composed of?

Answer 4

fiber tracts (bundles of nerve fibers)

Question 5

• corpus callosum What is it
• What does it do?
• Why is it important?

Answer 5

? One very large fiber tract Connects the cerebral hemispheres Some of the cortical functional areas are only in one hemisphere

Question 6

basal nuclei

• What is it?”i
• What does it do? s
• Why is it important?

Answer 6

slands” of gray matter deep within white matter Help regulate voluntary motor activitie Problems with it can cause inability to
walk normally or carry out other voluntary movments

Question 7

What are two syndromes associated with basal nuclei problems?

Answer 7

Huntington’s disease and Parkinson’s disease

Question 8

Diencephalon

Answer 8

• also known as the interbrain

- it has 3 major structures: thalamus, hypothalamus, epithalamus

Question 9

Thalamus

Answer 9

Greek, meaning “inner room”

-What is it a relay station for? Sensory cortex

Question 10

what 4 maiin things does the Hypothalamus regulate

Answer 10

regulation of body temperature
* water balance
* metabolism
drives and emotions

Question 11

the hypothalamus is part of the limbic system that

Answer 11

controls * thirst

• appetite
• sex
• pain
• pleasure

Question 12

pituitary gland -What does it secrete?Where is it located?

Answer 12

Hangs from anterior floor of hypothalamus

hormones

Question 13

Epithalamus

- 2 important parts

Answer 13

pineal body choroid plexus

Question 14

pineal body

Answer 14

function is still somewhat of a mystery, but melatonin
is known to be a major secretory product – which influences the
sleep/wake cycle.

Question 15

choroid plexus

Answer 15

• knots of? capillaries

- forms the? Cerebrospinal fluid

Question 16

Brain Stem

-3 structures

Answer 16

A. Midbrain, Pons

Medulla Oblongata

Question 17

A. Midbrain

Answer 17

• relatively small part

- coveys ascending and descending impulses

Question 18

midbrain -reflex center involved in

Answer 18

vision and hearing

Question 19

Pons means “bridge”

Answer 19

mostly fiber tracts
-however, it does have important nuclei involved in the control
of breathing

Question 20

Medulla Oblongata location

Answer 20

most inferior part

-merges into the spinal cord

Question 21

Medulla Oblongata function

Answer 21

important fiber tract area

• regulate vital visceral activities
• heart rate
• blood pressure
• breathing
• swallowing
• vomiting

Question 22

Cerebellum means small brain

Answer 22

• provides the precise timing for skeletal muscle activity

- controls our balance and equilibrium

Question 23

frontal lobe

Answer 23

higher functions, judgement,volentary movemrnt and learning

Question 24

paricetial

Answer 24

important sensory centers(touch pain, temperature)

Question 25

occipital

Answer 25

controls vision centers

Question 26

temporal

Answer 26

lanuage,reading writing hearing memory