A&P - Chapter 20 (Part 4)

Question 1

What does gray matter function as?

Answer 1

Autonomic reflex centres

Question 2

What are 3 examples of autonomic reflex centres?

Answer 2

1. Heartbeat
2. Respiration
3. Blood vessel diameter

Question 3

What is automic relfex centres also known as? (2)

Answer 3

1. Vital centres

2. Medulla oblongata

Question 4

Where do sensory tracts conduct impulses?

Answer 4

To higher parts of the brain

Question 5

Where do motor tracts conduct impulses?

Answer 5

From higher parts of the brain and spinal cord

Question 6

What is the 2nd largest part of the brain?

Answer 6

Cerebellum

Question 7

What does the cerebellum have more than any other part of the nervous system?

Answer 7

Neurons

Question 8

Where is the cerebellum connected to?

Answer 8

The brainstem

Question 9

What is the cortex of the cerebellum made up of?

Answer 9

Gray matter

Question 10

What is the interior of the cerebellum made up of?

Answer 10

Mostly white matter

Question 11

What does the cerebellum do?

Answer 11

Helps control muscle contractions to produce coordinated movements

Question 12

Why do we coordinated movements?

Answer 12

So that we can…

1. Maintain balance
2. Move smoothly
3. Sustain normal posture

Question 13

Where is the diencephalon located?

Answer 13

Between the cerebrum and the midbrain

Question 14

What are 5 parts of the diencephalon?

Answer 14

1. Hypothalamus
2. Thalamus
3. Optic chiasma
4. Pineal gland
   - endocrine
5. Others

Question 15

Where is the hypothalamus? (2)

Answer 15

1. Below the thalamus

2. Posterior to the pituitary gland

Question 16

What is one of the smallest parts in the diencephalon?

Answer 16

The hypothalamus

- pituitary stalk

Question 17

What is one of the main things controlled by the hypothalamus?

Answer 17

Body temperature

- regulating

Question 18

What shape is the thalamus?

Answer 18

Dumbbell shaped

Question 19

What does the thalamus have in each cerebral hemisphere?

Answer 19

Mass of gray matter

Question 20

What does the thalamus mostly consist of? (2)

Answer 20

1. Dendrites

2. Cell bodies of neurons

Question 21

Where do the axons of cell bodies of neurons extend?

Answer 21

Upwards into sensory areas of the cerebrum

Question 22

What is the thalamus mostly composed of?

Answer 22

1. Dendrites

2. Cell bodies

Question 23

Where do the axons of the cell bodies of the thalamus extend?

Answer 23

Upwards towards the sensory areas of the cerebrum

Question 24

What does the thalamus receive?

Answer 24

All sensory information

Question 25

What is the one sensory information that that thalamus doesnt receive?

Answer 25

Smell

Question 26

What does the thalamus do after if receives its sensory information?

Answer 26

It then directs impulses from sensory organs to sensory areas in the brain for conscious interpretation

Question 27

What do we associate sensation with in the thalamus?

Answer 27

Emotions/feelings

- pleasant/unpleasant

Question 28

What role does the thalamus play in the body?

Answer 28

In its arousal/alertness mechanisms

- alters us to danger by prioritizing threatening impulses

Question 29

What is the hypothalamus know as?

Answer 29

The heart of subconsciousness

Question 30

What does the hypothalamus link?

Answer 30

The body and the mind

Question 31

What is the hypothalamus a major centre for?

Answer 31

Controlling the ANS

Question 32

ANS

Answer 32

Autonomic nervous system

Question 33

What does the ANS control?

Answer 33

Involuntary actions

Question 34

What does the hypothalamus connect?

Answer 34

The nerves and endocrine system

Question 35

What is the master translator also known as?

Answer 35

The hypothalamus

Question 36

Infundibulum

Answer 36

Salt leading to the posterior pituitary gland