2.11.2 Nervous Coordination and Proprioceptor (Structured Questions)

Question 1:
Diagram 1.1 shows a student sitting cross-legged on a chair. A friend hits lightly below part of the student’s knee cap with a rubber hammer.

Diagram 1.1

(a) What happens to the student’s leg after being hit? [1 mark]

(b) Name the type of action in 1(a). [1 mark]

(c) State one importance of the action in 1(b). [1 mark]

(d) Diagram 1.2 shows parts Q which controls the action in 1(b). Name part Q. [1 mark]

Diagram 1.2

(e) Diagram 1.3 shows three type of neurones.
Mark (√) in the boxes provided, the neurones involved in the action in 1(b). [2 marks]

Diagram 1.3

(a) The student’s leg jerks upwards.

(b) Reflex action

(c) To avoid injury.

(d) Spinal cord


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