5.2 The human nervous system

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Question 28
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A sagittal section diagram of the human brain showing its internal structures. Four regions are labeled with letters: Label P points to the highly folded outer region (cerebral cortex); Label Q points to the structure at the lower back of the brain with parallel folds (cerebellum); Label R points to the brainstem structure (medulla); Label S points to the small bulb-like protrusion at the base of the brain (pituitary gland).

a.

Which labeled part of the brain controls balance and muscle coordination when a person is riding a bicycle?

Tick (✓\checkmark✓) one box.

  • P
  • Q
  • R
  • S
[1]
b.

Name the part of the brain, labeled R, that is responsible for controlling unconscious activities such as breathing rate and heart rate.

[1]
c.

Describe how the brain receives information about a change in skin temperature when a hand touches a cold object. You should include references to receptors and neurones in your answer.

[3]

5.2 The human nervous system Questions

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