Central Nervous System

Question 1

What are the components of the CNS?

Answer 1

Brain and the spinal co

Question 2

What is the brain divided into two of

Answer 2

What is the brain divided into two of

Question 3

What joins the two sides of the brain?

Answer 3

Neural bridge called the corpus callosum

Question 4

What does the left hemisphere control?

Answer 4

Logic, numbers and language

Question 5

What does the right hemisphere control?

Answer 5

Creativity, imagination and rhythm

Question 6

What does the forebrain consist of?

Answer 6

Cerebrum, thalamus and hypothalamus

Question 7

What does the midbrain consist of?

Answer 7

No divisions just midbrain

Question 8

What does the hindbrain consist of?

Answer 8

Cerebellum, pons and medulla

Question 9

What does the brainstem con

Answer 9

Midbrain, pons and medulla

Question 10

Composition of the brainstem

Answer 10

Two mounds of folded tissue posterior to the brainstem to which it is connected by three peduncles (bands of neurons resembling a stalk) of neural tissue

Question 11

Use of the cerebellum?

Answer 11

Involved in motor functions and motor learning (riding a bike)

Question 12

Function of the thalamus

Answer 12

Relay point where most neural tracts headed for the cerebrum synapse before ascending further

Question 13

Function of the hypothalamus

Answer 13

Homeostasis

Question 14

Function of the cerebrum

Answer 14

Higher functions such as intelligence, personality etc

Question 15

Why is the surface of the cerebrum highly folded or convoluted?

Answer 15

Increase the surface area increasing the amount of grey matter that is present

Question 16

What does the cerebral cortex contain?

Answer 16

Cell bodies of neurones

Question 17

Infoldings of brain. Often used to demarcate (mark the boundary of) different functional areas

Answer 17

Sulci

Question 18

Sticky out bits between sulci. These are areas of functional grey matter. Adjacent gyri may have very different functions.

Answer 18

Gyri

Question 19

What are the meninges?

Answer 19

Form a layer of tissue around the brain, physically separating it from the rest of the body and helping to cushion it

Question 20

What is CSF?

Answer 20

Cerebro-spinal fluid, actively secreted from the blood

Question 21

What are the ventricles of the brain?

Answer 21

Cavities within the brain tissue that form reservoirs for CSF

Question 22

Composition of CSF

Answer 22

Clear fluid low in proteins, cells and most ions but more sodium, chloride and magnesium than blood plasma

Question 23

Pathing of CSF

Answer 23

Circulates through ventricles in the brain before exiting onto the surface of the brain, reabsorbed into the venous circulation at specialised points called arachnoid granulations

Question 24

Lumbar puncture

Answer 24

Not enough space around spinal cord to allow removal of CSF superior to its termination, fluid removed can be used to assess health (wbc count)