CNS

Question 1

Sulcus

Answer 1

Dip in brain folds

Question 2

Gyrus

Answer 2

Hill in brain folds

Question 3

Fissure

Answer 3

Deep sulcuses, longitudinal (separates brain hemispheres) and transverse (separates cerebrum and cerebellum, aka Sylvian fissure)

Question 4

Significant sulcus/gyrus

Answer 4

Central sulcus- in the middle

Precentral gyrus- gyrus right before CS (primary motor cortex)

Postcentral gyrus- gyrus right after CS (primary somatosensory cortex)

Question 5

Choroid plexuses

Answer 5

Blood vessels inside ventricles that turn blood into CSF

Question 6

Arachnoid vili

Answer 6

Folds in subdural sinus (between dura mater layers) that turn CSF into blood.

Question 7

Association, Commisural, Protection fibers

Answer 7

Association: connect brain areas

Commisural: connect brain hemispheres

Projection: run vertically along each hemisphere

Question 8

Insula

Answer 8

At end of lateral sulcus

Question 9

Prefrontal Cortex

Answer 9

Planning, logical decision making, located deep to frontal lobe

Question 10

Broca’s and Wernicke’s

Answer 10

Broca is speech/motor function, Wernicke is speech comprehension

Question 11

Meninges deepest layer

Answer 11

Pia mater

Question 12

Meninges layer separated from pia mater by subarachnid space

Answer 12

Arachnoid layer

Question 13

Meninges layers of dura mater

Answer 13

Meningeal and Periosteal layers (separated by subdural sinus)

Question 14

Arachnoid vili are found in

Answer 14

The subdural sinuses

Question 15

Which layer of dura mater is only found in brain

Answer 15

Periosteal layer

Question 16

Thick layer of dura mater found in longitudinal fissure

Answer 16

Falx Cerebri

Question 17

Cerebrospinal fluid purposes

Answer 17

buoyancy, waste removal, nutrient transfer

Question 18

Pineal gland position + purpose

Answer 18

Forms roof of 3rd ventricle, secretes melatonin. Inferior and posterior to corpus callosum. Directly superior to corpora quadrigemina.

Question 19

What does the cerebellum control?

Answer 19

body movement based on sensory/positioning information.

Question 20

Functions of limbic system components

Answer 20

Amygdala (reward/punishment/learning)

Hippocampus (long term memories)

Mammillary body (sucking/eating reflex)

Question 21

decussation means

Answer 21

crossover

Question 22

contralateral processing

Answer 22

left/right brain hemispheres control opposite side of body