HNS - Central nervous system

Question 1

Name the important parts of the brain.

Answer 1

1. Cerebrum
2. Cerebellum
3. Medulla oblongata
4. Hypothalamus

Question 2

Explain the Cerebrum and its functions.

Answer 2

Cerebrum :

• Largest part of the brain.
• Two cerebral hemispheres (left and right brain)
• white matter
• functions = voluntary action control, higher mental function control, and reads + interprets sense organ nerve impulses.

Question 3

Explain the hypothalamus and its functions.

Answer 3

Hypothalamus :

• small part of brain
• functions = regulating blood pressure, body temp, heart beat, water balance, hunger appetite, thirst, and sleep.

Next to the ear // almost inside I think

Question 4

Explain the cerebellum and its functions.

Answer 4

Cerebellum :

• towards bottom of brain near spinal chord
• white matter
• Also two hemispheres connected by worm like nerve tissue mass (vermis)
• functions = controls voluntary actions, controls muscle tone.
• shallow and parallel grooves

Question 5

Explain the medulla oblongata and its functions.

Answer 5

Medulla oblongata :

• extension of the spinal chord.
• grey matter - inside, white matter - outside.
• functions = transmits nerve impulses from the spinal chord to the brain and back, controls autonomic functions.

Question 6

What does autonomic mean?

Answer 6

Automatic, the involuntary impulses.

Question 7

What are the two main parts of the CNS?

Answer 7

The brain and the spinal chord.

Question 8

Important labels to know in the spinal chord.

Answer 8

Central Canal, grey matter, white matter, dorsal root, spinal nerves.

Question 9

What are the functions of the spinal chord?

Answer 9

1- provides a pathway for nerve impulses to and from the brain.
2- contains reflex centers that initiate reflex actions.