Question 3
The diagram below illustrates a part of the musculoskeletal system in humans. Study it and answer questions 3(a) to 3(c).
(a) Name:
(i) the parts labelled I, II, III and IV. [2 marks]
(ii) three bones that could be found in the structure illustrated in the diagram. [3 marks]
(b) Mentiontwopossible movements associated with the structure. [2 marks]
(c)Name three injuries that could occur to the structure. [3 marks]
Observation
The question was popular among candidatesand majority of the candidates that attempted this question performed well in it. Marks were however lost to spelling errors.
The expected answers are:
(a) (i)Parts labelled
- Triceps
- Humerus
- Biceps
- Tendon
(ii) Bones of the illustrated structure
- Humerus
- Clavicle
- Scapula
- Ulna
- Radius
(b) Possible movements associated with the illustrated structure
- Flexion/bending/contracting
- Extension/straightening/relaxing
(c) Injuries that could occur in the upper arm
- Fracture
- Dislocation
- Sprain
- Strain/overstretching
- Wounds/cuts
- Muscle cramps/pull/muscle fatigue/muscle spasm
- Muscle tear
- Muscle contusion/bruise
- Burns/scalds