Chapter 15 Flashcards Preview

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Flashcards in Chapter 15 Deck (47):
1

CNS

brain: meninges, cerebrum, diencephalon, brainstem & cerebellum
& spinal cord

2

PNS

nerve structs, cranial nerves, spinal nerves & plexuses

3

GRAY matter

most cell bodies and dendrites..
NO MYELIN

4

White matter

axons
MYELIN (lipid, white, fatty)

5

Cerebral, neural cortex

thin layer of gray matter that runs outer layer
cerebrium

6

nucleus

random matter inferior CNS

7

tracts

bundles of CNS axons that share a common origin and desitination

8

ganglia

neuron cell bodies in PNS

9

nerves

bundles of axons in PNS

10

Structures of brain & brainstem

cerebrum, thalamus, hypothalamus, midbrain, pons, cerebellum, medulla

11

Meninges (surface--> deep)

Dura matter, thick and tough layer
arachnoid, still can't see through groves
pia mater, cannot peel layer away

12

subarchnoid space

fluid filled space between arachnoid and pia mater

13

What are the two hemispheres of the cerebrum separated by?

longitudinal fissure

14

What are the two hemispheres of the cerebrum CONNECTED by

corpus callosum

15

Gyrus, sulcus, fissure??

Fold
space between
deep sulcus

16

lateral fissure divides which lobes?

frontal, parietal, & temporal

17

central sulcus?

between frontal lobe and parietal lobe

18

parieto-occipital sulcus

divides parietal lobe and occipital lobe

19

Cerebral lobes?

frontal
parietal
occipital
temporal
insular

20

Cerebral cortex

gray matter in each lobe have specific functions

21

Frontal lobe functions cortex

MOTOR: coming from CNS and out to the body
planning movements, control in motor neurons in spinal cord
Cognitive functions:
short term memory
control of attention
planning
personality
problem solving

22

Parietal lobe cortex

SENSORY:
touch, temperature, paint
visual info, motion

23

Occipital lobe cortex

SENSORY:
basic visual stimulation (COLOR CONTRAST SHAPES)
Optic nerve carries info to the occipital lobe first

24

Temporal lobe cortex

SENSORY:
auditory stimulation SMELL
olfactory stimulation SOUND
some visual stimulation (faces) - object recognition
long-term memory

25

Insula lobe cortex

SENSORY:
taste stimulation

26

Wernicke's area

Parietal & temporal lobes
Lanugage processing with BROCAS AREA in frontal lobe to produce spoken language
Math

27

nucleus

discreet bits of gray matter INSIDE cerebrum

28

Cerebral nuclei

Caudate nucleus
Putamen
Globus palidus

29

Cerebral nuclei function MOTOR

"gating" function: go, no go
Motor control: need a "go" from all three nuclei
Parkinson's and huntingtons: c constantly moving. because abnormalities of one of the nuclei

30

Cerebral nuceli function COGNiTIVE

OCD: can't stop doing something

31

Amygdaloid body

fear emotions

32

WHITE MATTER

contains communication pathways between gray matter
made up of axons

33

Diencephalon

Thalamus, hypothalamus (pituitary gland) & pineal gland

34

Thalamus

takes all sensory info and routes it into the proper location
Divided into halves by INTERMEDIATE MASS
sound, vision goes to thalamus first
Smart relay
Stop sending info (wearing underwear)

35

Hypothalamus

control of endocrine function (HORMONES)
control of drives (thirst, hunger, sex, pleasure)
body temperature
autonomic function (fear, flight, fight vs. rest)
circadian rhythms (sleep)
hypothalamus controls pituitary gland

36

Brainstem

Midbrain
Pons
Medulla Oblongata

37

Midbrain

Motor control system
Cerebral aqueduct
Red nucleus
Substantia nigra

38

Pons

Reticulat formation: group of cells that control autonomic fxn
BREATHING

39

Medulla

Olive & Pyramid

40

Reticular formation of Medulla

cardiac center
vasomotor center (blood vessel diameter)
sneezing, coughing, swallowing, gagging, and vomiting

41

Cochlear nucleus

Medulla
relays sound info to brain
SOUND

42

Inferior olivary nucleus

relays body position info to cerebellum
BODY POSITION

43

vestibularcochlear nerve

SOUND RELAY cochlear nucleus..thalamus..temporal lobe

44

Cerebellum

Hemispheres
VERMIS connects hemispheres
ARBOR VITAE- white

45

Cerebellum function

coordinate muscular action
walking

46

Ventricles

2 lateral ventricles, third ventricle, fourth ventricle
fluid filled spaces

47

Cerebral spinal fluid CSF

inside fluid & outside fluid
subarachnoid space, goes all in CNS & spinal cord