Chapter 12 Flashcards Preview

Anatomy and Physiology > Chapter 12 > Flashcards

Flashcards in Chapter 12 Deck (143)
Loading flashcards...
1

Central Nervous System (CNS)

Brain and Spinal Cord

2

Cephalization

More developed brain
Neurons

3

Embryonic Developement

Brain and Spinal Cord start as neural tube

4

Neural Tube: 3 Primary Vesicles at Anterior End

Forebrain
Midbrain
Hindbrain

5

Neural Tube: Posterior End

Spinal Cord

6

Brain vs. Membranous Skull

Brain develops faster
-Folds
-Forebrain moved towards brain stem
-Cerebral hemispheres envelope midbrain

7

Creases and Folds Purpose in Brain

Caused by developing fast
-Increases surface area

8

Regions of Brain

Cerebral hemispheres
Diencephalon
Brain Stem
Cerebellum

9

Spinal Cord

Central cavity surrounded by gray matter
External white matter

10

Brain

Higher amounts of gray matter in brain
Two parts
-Cerebral hemispheres
-Cerebellum

11

Cortex

The outer gray matter of the cerebral hemispheres and cerebellum
-Disappears in brain stem- scatters

12

Ventricles of Brain

Filled with cerebrospinal fluid
Lined by ependymal cells
Connected to one another and to central canal of spinal cord

13

Lateral Ventricles

Third ventricle via interventricular foramen

14

Third Ventricle

Fourth ventricle via cerebral aqueduct

15

Third and Fourth Ventricles

Paired, C-shaped lateral ventricles in cerebral hemispheres

16

Septum

Separating lateral ventricles of brain (Look at Diagram)

17

Gyrus (Gyri)

Ridge, mountain like

18

Sulcus (Sulci)

Valley

19

Fissure (Fissures)

Deep Groove

20

Longitudinal Fissure

Location
-Right sagittal
Function/Purpose
-Makes right and left

21

Transverse Cerebral Fissure

Location
-Cerebrum
-Cerebellum
Function/Purpose
-Makes top and bottom

22

Cerebral Hemispheres (5 Lobes)

Frontal
Parietal
Temporal
Occipital
Insula

23

Central Sulcus

Separates frontal lobe and parietal lobe

24

Parieto-Occipital Sulcus

Separates occipital and parietal lobes

25

Lateral Sulcus

Outlines temporal lobes

26

3 Layers of Cerebral Hemispheres

Cerebral Cortex
White Matter
Basal Nuclei

27

Cerebral Cortex

Gray matter superficially

28

White Matter

Internal

29

Basal Nuclei

Deep within the white matter

30

Cerebral Cortex

Thin- superficial layer
40% mass of brain