Nervous system: Brain stem + Cerebellum

Question 1

Medulla oblongota 1-7

What are pyramids in the brain?

Answer 1

bilateral ridges on anterior side of the brain

Question 2

Medulla oblongota

What are the pyramids composed of?

axons?

Answer 2

descending voluntary motor axons, most axons cross

Question 3

Medulla oblongota

what percent does each side of the brain control?

Answer 3

80%

Question 4

different centers in the autonomic nervous system

cardiac center

apart of ANS

Medulla oblongota

Answer 4

regulates heart rate

Question 5

Medulla oblongota

vasmotor center

apart of ANS

Answer 5

regulates blood pressure by constricitng and dialating arterioles

Question 6

Medulla oblongota

respiratory center

apart of ANS

Answer 6

regulates breathing

Question 7

CSF filled?, where can it be found?, continous?

desribe the inferior part of the 4th ventricle

Medulla oblongota

Answer 7

CSf filled space found in the pons and medulla it is continous with central canal of spinal cord

Question 8

Axons?

what is the pons composed of?

Pons

Answer 8

groups of axons (axon tracts)

Question 9

Pons

respiratory center

in pons

Answer 9

works with the respiratory center in the medulla

Question 10

Mesencephalon

corpora quadrigemina

Answer 10

the four colliculi—two inferior, two superior—located on the tectum of the dorsal aspect of the midbrain.

Question 11

Mesencephalon

superior colliculi

visual or auditory?

Answer 11

visual reflex centers for coordinating head movements with what the eye is seeing

Question 12

Mesencephalon

inferior colliculi

visual or auditory?

Answer 12

auditory reflex centers for coordinating head movements with what is being heard

Question 13

Mesencephalon

cerebral peduncles

Answer 13

groups of axons on ventral side of the midbrain

Question 14

Mesencephalon

what does mesencephalic cerebral aquaduct connect?

Answer 14

3rd ventricle to the 4th

Question 15

cerebellum

what does the inferior cerebellar peduncles connect?

(not apart of brain stem)

Answer 15

connects medulla to the cerebellum

Question 16

cerebellum

what does the middle cerebellar peduncles connect?

Answer 16

connects pons to cerebellum

Question 17

cerebellum

what does the superior cerebellar peduncles connect?

Answer 17

connetcs midbrain and the cerebellum

Question 18

sarah balances

What is the function of the cerellum

cerebellum

Answer 18

1) coordinates and fine tunes voluntary skeletal muscle movement
2) helps maintain balance and posture
3) stores memory of previous learned movements pattern

Question 19

cranial meninges

dura mater

Answer 19

outermost layer

Question 20

cranial meninges

arachnoid mater

Answer 20

middle layer

Question 21

cranial meninges

subaracnoid space

Answer 21

contains CSF

Question 22

cranial meninges

pia mater

Answer 22

innermost layer

Question 23

CSF production/circulation

what does CSF provide?

Answer 23

1) provides buoyancy and protection (liquid cushion)
2) helps maintain the chemical envoirment

Question 24

CSF production/circulation

where is the CSF made?

Answer 24

in the ventricles of the brain

Question 25

CSF production/circulation

Step 1

Answer 25

cerebral hemisphere/ cerebrum

Question 26

CSF production/circulation

step 2

Answer 26

interventricular foramina

Question 27

CSF production/circulation

step 3

Answer 27

mesenphalic aquaduct

Question 28

CSF production/circulation

step 4

Answer 28

1/2 pons and 1/2 medulla

Question 29

CSF production/circulation

step 5

straight down

Answer 29

central canal

Question 30

CSF production/circulation

step 6

to the side (SAS)

Answer 30

subarachnoid space

Question 31

CSF production/circulation

step 7

(AV)

Answer 31

arachnoid villi

Question 32

CSF production/circulation

step 8

(DVS)

Answer 32

dural venous sinus