The Nervous System

Question 1

What does the nervous system include?

Answer 1

The central nervous system and the peripheral nervous system

Question 2

What are the two pathways in the brain?

Answer 2

Simple or complex

Question 3

What does the central nervous system consist of?

3

Answer 3

The spinal cord and brain

Contains neural tissue (neurons and glia), connective tissues, and blood vessels

Is protected by bone and meninges (CT)

Question 4

What is the CNS protected by?

Answer 4

The meninges

Question 5

What does the CNS contain?

4

Answer 5

Neurons

Glia

Connective tissues

Blood vessels

Question 6

List the functions of the CNS

Answer 6

To process and coordinate sensory data, motor commands, higher functions of brain

Question 7

How does the CNS process and coordinate sensory data?

Answer 7

It does so from inside and outside the body

Question 8

How does the CNS process and coordinate motor commands?

Answer 8

It controls activities of peripheral organs (via muscles, glands)

Question 9

How does the CNS process and coordinate higher functions of brain?

Answer 9

It coordinates intelligence, memory, learning, emotion

Question 10

What are the four main regions of the brain?

Answer 10

Cerebrum

Diencephalon

Cerebellum

Brainstem

Question 11

What does the deincephalon consist of?

Answer 11

The thalamus and hypothalamus

Question 12

What regions of the brain form the subconscious brain?

Answer 12

Diencephalon

Cerebellum

Brainstem

Question 13

What does the peripheral nervous system consist of?

2

Answer 13

All neural tissue outside the CNS

Consists of bundles of axons

Question 14

What does the PNS do?

2

Answer 14

It delivers sensory information to CNS

It delivers motor commands from the CNS

Question 15

Where are cranial nerves connected?

Answer 15

They are connected to the brain

Question 16

Where are spinal nerves connected?

Answer 16

They are connected to the spinal cord

Question 17

How many pairs of spinal nerves do we have attached to the spinal cord?

Answer 17

31 pairs of spinal nerves

Question 18

What is each spinal nerve composed of?

Answer 18

Sensory and motor axons

Question 19

What are the spinal nerves names after?

Answer 19

They are named after the spinal cord segment they are connected to

Question 20

How many cranial nerves are attached directly to the brain?

Answer 20

12

Question 21

What do the cranial nerves connect?

Answer 21

They connect parts of the face, neck and chest to the brain

Question 22

What do cranial nerves consist of?

Answer 22

Sensory, motor or mixed (sensory and motor) nerves

Question 23

Give an example of a mixed cranial nerve.

Answer 23

The optic nerve

Question 24

What is the conscious region of the brain?

Answer 24

The cerebrum

Question 25

What fraction of the brain is the cerebrum?

Answer 25

7/8

Question 26

What processes is the cerebrum associated with? | 4

Answer 26

Voluntary movement Creative Intellectual abilities Scientific abilities

Question 27

What are the four key areas of the cerebrum?

Answer 27

Primary sensory cortex Primary motor cortex Visual cortex Auditory cortex

Question 28

What is the primary sensory cortex?

Answer 28

This is where sensory information we become aware of is sent

Question 29

What is the primary motor cortex?

Answer 29

This is where motor nerve signals leave the brain to direct conscious muscle movement

Question 30

What is visual cortex?

Answer 30

This is where sensory information from the eye is sent

Question 31

What is auditory cortex?

Answer 31

This is where sensory information from the ear is sent

Question 32

What is the diencephalon divided into? | 2

Answer 32

The thalamus The hypothalamus

Question 33

What is the thalamus?

Answer 33

The thalamus is a relay station for sensory signals

Question 34

What is the hypothalamus?

Answer 34

The hypothalamus is a major subconscious regulatory centre

Question 35

What is homeostasis?

Answer 35

Homeostasis is the property of a system that regulates its internal environment and tends to maintain a stable, constant condition of properties like temperature, pressure, glucose, O2 and pH