Question 6
(a) Name four muscles of the upper parts of the human body. [4 marks]
(b) Name:
(i) four organs involved in respiratory system; [4 marks]
(ii) the two substances that are exchanged during respiration. [2 marks]
Observation
This question was attempted by many candidates and their performance was poor. In part (a) many candidates did not do well in it. In part (b) (i)and (ii) majority of the candidates that attempted it could not give correct answer.
The expected answers are as follow:
(a) Muscles of the upper part of the human body
- trapezius;
- deltoid;
- latissimus dorsi;
- triceps;
- pectoralis major;
- biceps;
- pectoralis minor;
- serratus;
- Sterno-mastoid;
- Teres major;
- Brachio-radialis;
- supraspinatus;
- Rhomboideus major;
- Levator scapulae.
(b) (i)Organs involved in the respiratory system
- trachea/wind pipe;
- lungs;
- nose/nasal cavity;
- mouth;
- larynx;
- pharynx;
- bronchi/bronchioles ;
- epiglottis;
- alveoli.
(ii)Substances that are exchanged during respiration
- oxygen/ O2;
- carbondioxide/CO2