Nervous System and Brain Notes Flashcards

1
Q

how many sections of the brain are there, and what are their names?

A

3 sections :
-cerebrum (lobes, gyri, sulci)
-cerebelum (hind brain)
-brainstem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are meninges?

A

protective coverings on/of the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what are the 4 arteries that supply blood to the brain?

A

L+R vertebral arteries (through C vertabrea foramina)
L+R carotid arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

how does your brain get nourishment from the blood (bc no blood in the brain)

A

the blood brain barrier (‘security cells’) is a gateway that removes what the brain needs from the blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how come most medications don’t work on the brain?

A

bc the blood brain barrier does not recognize the medication as something it needs, therefore it does not accept it into the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is meningitis?

A

inflammation of the meninges due to irritation of the meninges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

where does CSF pool?

A

in the ventricals
3rd, 4th, and the two lateral ventricles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what separates the lateral ventricles?

A

septum pallucidum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what are some differences of the CNS and the PNS

A

CNS:
-contains the brain and spinal cord
-most protected organs in the body

PNS:
-all nerves in the body outside the brain and spinal collum
-bundles of axons, ganglia, nerve cell clusters
-31 pairs of spinal nerves that extend form the intervertebral foramina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

define the nervous system

A

a controlling and communication system that processes through all through, action, emotion, and life processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what are the 3 main functions of the nervous system?

A

1) sensory input – information in though sensory receptors

2) integration – processing sensory input

3) motor output – activation of effector organs to cause a response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

where does the spinal cord end?

A

from foramen magnum to L2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what are the nerve pairs, and what do they innervate?

A

8 cervical nerve pairs: innervates neck, arms and hands
12 thoracic nerve pairs: innervates chest and abdomen
5 lumbar, 5 sacral and 1 coccygeal nerve pairs: innervates legs and feet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly