Question 8
(a) Name two involuntary actions in humans. [2 marks]
(b) State four disorders of the nervous system. [4 marks]
(c) State four practices that could reduce high blood pressure. [4 marks]
Observation
Many candidates who attempted this question did well. Some had difficulties stating the disorders of the Nervous system.
The expected answers are:
(a) Involuntary actions in humans
- Sneezing
- Sleeping
- Coughing
- Fright
- Blinking of the eyes
- Yawning
- Knee jerk
- Breathing
- Heart beat
- Dilation of pupil
(b) Disorders of the nervous system
- Meningitis / cerebrospinal fever
- Poliomyelitis / polio
- Tetanus / lockjaw
- rabies
- stroke
- epilepsy / convulsion
- paralysis
(c) Practices that could reduce high blood pressure
- avoid consumption of fatty foods / eat healthy diet
- engage in regular exercise
- avoid alcohol intake
- reduce salt intake
- avoid tobacco smoking
- visit medical doctor
- avoid excessive stress / thinking
- have enough rest/sleep