O-LevelBiologyCoordination & Response5090/21 · May/June 2016 · Q810 Marks
The brain is one component of the nervous system.
- (a)State two other components of the nervous system. 1 2[2]
- (b)Fig. 8.1 shows the human brain. Name and describe the functions of parts R, S, T and U, labelled in Fig. 8.1, in terms of coordinating and regulating bodily functions. R S T U[8]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [2] spinal cord;
- nerves/neurones ;
- named receptor/sense organ ;
- [max 8] R + medulla;
- control of heart rate/breathing/involuntary actions;
- relay of impulses between brain and spinal cord ;
- S + pituitary gland;
- secretes/releases hormone(s);
- example of named hormone released + correct function ; e.g. TSH released which stimulates the thyroid gland to secrete thyroxine.
- T + cerebrum/cerebral hemispheres;
- voluntary movement or example of;
- thought/memory/any other acceptable function ;
- U + cerebellum ;
- coordination of movement;
- maintenance of posture/balance ; A functions only if linked to correct named part of the brain
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