8.2.1 - Brain: Structure & Function

Question 1

What Are The Different Sections Within The Brain?
(4 Points)

Answer 1

~ Cerebrum.

~ Hypothalamus.

~ Cerebellum.

~ Medulla oblongata.

Question 2

Describe The Cerebrum
(5 Points)

Answer 2

~ Largest part of the brain.

~ Divided into 2 halves -> the cerebral hemispheres, which are joined together by a band of nerve fibres called the corpus callosum.

~ Right hemisphere controls the left side of the body, the left hemisphere controls the right side.

~ Thin outer layer known as the cerebral cortex.

~ Beneath the cerebral cortex layer is the white matter, which consist of the myelinated axons of neurones.

Question 3

Describe The ‘Cerebral Cortex’ Of The Cerebrum
(4 Points)

Answer 3

~ Consists of cell bodies of neurones.

~ Highly folded, increasing its surface area allowing a greater number of neurones.

~ More neurones means more neurone connections can be made.

~ Means greater the ability of the brain to carry out more complex behaviours.

Question 4

Describe The Function Of The Cerebrum
(8 Points)

Answer 4

~ Vision.

~ Hearing.

~ Speech.

~ Thinking.

~ Memory.

~ Leading.

~ Movement.

~ Emotions.

Question 5

Describe The Hypothalamus

Answer 5

~ Monitors the blood as it flows through the brain.

~ In response, releases hormones or stimulates the neighbouring pituitary gland to release hormones.

Question 6

Describe The Function Of The Hypothalamus
(8 Points)