Structures Of The Cns

Front 1

How much does the brain weigh?

Back 1

3 lbs

Front 2

cerebrum

Back 2

responsible for high level, complex functioning; interprets sensory input, transmits messages to control parts

Front 3

what are the 4 lobes of the 2 hemispheres of the cerebrum?

Back 3

frontal lobe
parietal lobe
temporal lobe
occipital lobe

Front 4

frontal lobe

Back 4

responsible for intellect, personality behavior, primary motor areas

Front 5

parietal lobe

Back 5

responsible for sensory interpretation, spacial perception

Front 6

temporal lobe

Back 6

hearing, taste, smell, memory

Front 7

occipital lobe

Back 7

visual center

Front 8

brainstem

Back 8

controls basic survival functions. all ascending, descending fibers pass thru here.

Front 9

what are the parts of the brainstem?

Back 9

midbrain
pons
medulla

Front 10

midbrain/pons

Back 10

both have modulating affect on impulses which pass through

Front 11

pons

Back 11

has ctr which increases heart rate and produces vasoconstriction

Front 12

pons serves as communicating point with

Back 12

cerebellum

Front 13

medulla

Back 13

contains centers for control of blood pressure and rate of respirations and heart.

Front 14

medulla contains the reflex centers for -

Back 14

cough, sneeze, swallow

Front 15

medulla is where most _______ pathways cross

Back 15

descending.

Front 16

basal ganglia

Back 16

motor relay control center

Front 17

thalamus

Back 17

major relay station for sensory impulses.

Front 18

which area of the brain gives conscious recognition to crude sensation?

Back 18

thalamus

Front 19

hypothalamus

Back 19

located just below thalamus and in front of midbrain.

Front 20

which area links nervous system to endocrine system?

Back 20

hypothalamus

Front 21

which body functions does the hypothalamus control?

Back 21

reproduction, appetite, water balance, autonomic nervous system.

Front 22

RAS stands for ...

Back 22

reticular activating system

Front 23

RAS defined

Back 23

nonspecific sensory transmission system between the medulla and cerebral cortex;

Front 24

Which area is responsible for arousal (wakeful) state

Back 24

RAS

Front 25

The RAS is stimulated by

Back 25

sensory input from body
motor activity of body
retrograde stimuli from cerebrum.

Front 26

limbic system

Back 26

located beside hypothalamus near the inner surface of the cerebrum.

Front 27

which system is responsible for emotional behavior and drive?

Back 27

limbic system

Front 28

cerebellum

Back 28

coordinates muscle activity
maintains equilibrium; balance; maintains muscle tone and posture.

Front 29

which area functions below the level of consciousness?

Back 29

cerebellum

Front 30

which area is important in memory for motor skills like playing the piano and connects with the pons.

Back 30

cerebellum

Front 31

spinal cord

Back 31

from medulla to about L1 or L2; contains ascending (sensory) tracts and descending (motor) tracts.

Front 32

what covers the brain and spinal cord?

Back 32

meninges

Front 33

what are the 3 layers of the meninges?

Back 33

dura mater, arachnoid, pia mater.

Front 34

how much spinal fluid do the 4 ventricles and spinal canal contain?

Back 34

135 ml

Front 35

how much spinal fluid is produced daily?

Back 35

600 ml

Front 36

What is the purpose of the spinal fluid?

Back 36

to cushion and carry nutrients, but no blood.

Front 37

CSF is circulating in which space>

Back 37

subarachnoid

Front 38

What is the blood supply of the brain?

Back 38

receives 20% of CO or about 800-1000 ml/min

Front 39

where does the blood supply to the brain come from?

Back 39

internal carotid
vertebral
Circle of Willis

Front 40

internal carotid

Back 40

from common carotid branches and supplies cerebrum

Front 41

vertebral

Back 41

from subclavian artery; join to form the Basilar artery and supply cerebellum and brain stem.

Front 42

Circle of Willis

Back 42

junction for the 2 internal carotids and basilar artery and provides a safety valve - collateral circulation.

Front 43

What are the structures of the peripheral nervous system

Back 43

spinal nerves - 31 pairs
cranial nerves - 12 pairs

Front 44

What does the Autonomic nervous system control?

Back 44

involuntary functions of the body

Front 45

sympathetic vs. parasympathetic

Back 45

sympathetic: fight or flight; norepinephrine; adrenergic.
parasympathetic: conserve energy-day to day; acetylcholine; cholinergic.

Front 46

How much does the brain weigh?

Back 46

3 lbs

Front 47

cerebrum

Back 47

responsible for high level, complex functioning; interprets sensory input, transmits messages to control parts

Front 48

what are the 4 lobes of the 2 hemispheres of the cerebrum?

Back 48

frontal lobe
parietal lobe
temporal lobe
occipital lobe

Front 49

frontal lobe

Back 49

responsible for intellect, personality behavior, primary motor areas

Front 50

parietal lobe

Back 50

responsible for sensory interpretation, spacial perception

Front 51

temporal lobe

Back 51

hearing, taste, smell, memory

Front 52

occipital lobe

Back 52

visual center

Front 53

brainstem

Back 53

controls basic survival functions. all ascending, descending fibers pass thru here.

Front 54

what are the parts of the brainstem?

Back 54

midbrain
pons
medulla

Front 55

midbrain/pons

Back 55

both have modulating affect on impulses which pass through

Front 56

pons

Back 56

has ctr which increases heart rate and produces vasoconstriction

Front 57

pons serves as communicating point with

Back 57

cerebellum

Front 58

medulla

Back 58

contains centers for control of blood pressure and rate of respirations and heart.

Front 59

medulla contains the reflex centers for -

Back 59

cough, sneeze, swallow

Front 60

medulla is where most _______ pathways cross

Back 60

descending.