Chp.15

Question 1

Gray matter

Answer 1

Where synapses and decision making occurs

Houses everything but myelinated axons

Forms cerebral cortex and nuclei

Question 2

White mater

Answer 2

Most deep in brain and superficial in spinal cord

White due to myelinated axons

Carries info all ab transmission and direction

Question 3

Support and protection of the brain

Answer 3

Bony cranium
Meninges
CSF
BBB

Question 4

What are cranial meninges

Answer 4

Connective tissue that separates brain from cranial bones

Protects blood vessels of brain and even forms some large veins for drainage of blood

Contains CSF

Question 5

Meninges

Answer 5

Superficial layer dura mater: 2 layers periosteal layer (superficial) and meningeal layer

Arachnoid mater: web of fibers

Pia mater: deepest and adheres to brain

Subarachnoid space is between arachnoid and pia and contains CSF

Question 6

Cranial dura septa

Answer 6

Flax cerebri: longitudinal fissure and separates left and right cerebral hemispheres

Falx cerebelli: separates left and right cerebellar hemispheres

Diaphragma sellae: septum between pituitary gland and hypothalamus

Tentorium cerebelli: horizontal fold that seperates cerebellum from anterior opening

Question 7

Dural venous sinuses form when two layers of dura mater separate

Answer 7

Falx cerebri: superior and inferior sagittal sinus

Tentorium cerebelli: transverse and straight sinus

Falx cerebelli: occipital sinus

Question 8

CSF func

Answer 8

Buoyancy: brain floats in CSF
Protection: provides liquid cushion
Environmental stability: CSF transports nutrients and gets rid of waste from brain

Question 9

What is CSF formed by

Answer 9

Choroid plexus

Question 10

5 lobes main function and cortexes

Answer 10

Frontal lobe: primary Motor cortex decision-making, and judgment
Parietal lobe: somatosensory cortex and senses
Temporal lobe: auditory and olfactory cortex
Occipital lobe: visual cortex
Insula: primary gustatory cortex (taste)

Question 11

Wernicke

Answer 11

Takes written and auditory info to comprehend

Part of left temporal lobe

Question 12

Cerebral nuclei

Answer 12

Caudate- coordination leg and arm
Amygdaloid - appropriate emotion
Lentiform- putamen subconscious, skeletal muscle and globus pallidus resting tone
Claustrum- takes info and creates an experience like smelling a rose