The Brain, Ventricles And Meninges

Question 1

What what layer of the tri layer embryo does the CNS originate

Answer 1

Ectoderm

Question 2

What does the forebrain include

Answer 2

Cerebral cortex and diencephalon

Question 3

What does the midbrain include

Answer 3

Midbrain

Question 4

What does the hind brain include

Answer 4

Pons medulla oblongata and cerebrum

Question 5

What are the three primary vesicles of the neural tube

Answer 5

Forebrain mid brain and hindbrain

Question 6

What is contain in grey matter

Answer 6

Cell bodies

Question 7

What is contained in white matter

Answer 7

Axons

Question 8

What is the cerebrum divided into

Answer 8

Left and right hemispheres

Question 9

What are the elevated ridges of the brain called

Answer 9

Gyri

Question 10

What are the valleys of the brain called

Answer 10

Sulci

Question 11

What are the valleys of the brain called

Answer 11

Sulci

Question 12

How many lobes in each hemisphere

Answer 12

5

Question 13

What are glial cells

Answer 13

Delicate CT that surrounds the CNS to support and bind it together

Question 14

How can regions of the cerebral cortex be classified

Answer 14

By function. Motor sensory or association areas

Question 15

Each himspheres of the brain are primarily concerned with the contra lateral side of the body. T or F

Answer 15

True

Question 16

What are the lateralised capabilities of the left brain

Answer 16

Language maths and logic

Question 17

What are the lateralised capabilities of the right brain

Answer 17

Emotions. Artistic skills and spatial awareness

Question 18

What are association fibres

Answer 18

Connects different parts of the brain in the same hemisphere

Question 19

What are commissural fibres

Answer 19

Connections between corresponding areas in the same hemisphere

Question 20

What are projection fibres

Answer 20

Fibres that carry all info in and out of the CNS

Question 21

what is the main function of the thalamus

Answer 21

major relay station of the brain
receives almost all sensory info
involved in memory and emotion

Question 22

what is the main function of the hypothalamus

Answer 22

most physiological functions involved in maintaining homeostasis inc. hormone secretion, autonomic nervous system, thermoregulation, hunger/thirst, circadian rhythm, emotional functions

Question 23

what is the main part of the epithalamus

Answer 23

pineal gland

Question 24

what is the main function of the epithalamus

Answer 24

together with the hypothlamus it regulates the sleep wake cycle by secreting melatonin

Question 25

what is the main function of the limbic system

Answer 25

emotional behaviours and interpretation of internal and external stimuli

Question 26

where is the limbic system located

Answer 26

medial aspect of each cerebral hemisphere

Question 27

the limbic system has extensive connections between the cortex and brainstem t or f

Answer 27

true

Question 28

how many hollow cavities (ventricles) in the brain

Answer 28

four within each hemisphere

Question 29

what are the names of the ventricles

Answer 29

x2 lateral ventricles third ventricle fourth ventricle

Question 30

what connects the ventricles in the brain

Answer 30

a series of channels

Question 31

what are ventricles filled with

Answer 31

CSF

Question 32

what produces CSF

Answer 32

choroid plexus

Question 33

what are the functions of the CSF

Answer 33

provides mechanical cushioning for the brain and sc medium for chemical communication

Question 34

where are the choroid plexus'

Answer 34

in each of the ventricles in the brain

Question 35

what are the meninges

Answer 35

three CT membranes that enclose the brain and SC

Question 36

in the spinal cord meninges, which layers are the blood vessels between

Answer 36

pia and arachnoid mater layers

Question 36

what are the spaces between the layers of the meninges called

Answer 36

subdural space sub arachnoid space

Question 36

what are the names of each layer of meninges

Answer 36

dura mater, arachnoid mater, pia mater

Question 37

what are the two layers of the dura mater

Answer 37

periosteal layer - adheres to the cranial periosteum meningeal layer - adheres to the sulci and fissures of the brain

Question 38

is there space between the periosteal later and meningeal layer of the dura mater in the skull

Answer 38

no (occasionally though)

Question 39

what are the 4 extensions of the dura mater in the skull (dura septa)

Answer 39

falx cerebri falx cerebelli tentorium cerebelli diaphragma sellae

Question 40

where is the falx cerebri

Answer 40

between the hemispheres of the cerebrum

Question 41

where is the falx cerebelli

Answer 41

between the halves of the cerebellum

Question 42

where is the tentorium cerebelli

Answer 42

over the cerebellum

Question 43

where is the diaphragma sellae

Answer 43

over the pituitary gland

Question 44

where does the thecal sac end

Answer 44

s2 level

Question 45

what is the space between the spinal and periosteal meningeal layers of the dura mater on the Spinal Cord called

Answer 45

epidural space

Question 46

where is the epidural space narrowest

Answer 46

cx region

Question 47

where is the epidural space widest (1-2mm)

Answer 47

l2-3 (5-6mm)