Back to: PRIMARY SEVEN P7 SCIENCE TOPICAL QUESTIONS AND ANSWERS
JOINTS
Qn. What is a joint?
- A joint is a place where two or more bones meet in the body.
Classes / groups of joints
Qn. Name the two classes of joints. - Movable joints
- Immovable joints
Movable joints
Qn. What is a movable joint? - A movable joint is a joint that allows movement in the body.
Qn. Identify the parts of a movable joint and their functions.
a) Ligament - A ligament is tough elastic fibre that joins a bone to a bone.
b) Tendon - A tendon is tough elastic fibre that joins a bone to a muscle/tendon.
c) Cartilage - A cartilage cushions bones in a joint.
- A cartilage reduces friction at a joint.
d) Synovial membrane - Synovial membrane produces synovial fluid.
e) Synovial fluid - Synovial fluid reduces friction at a joint.
Qn. Identify the types / examples of movable joints. - Ball and socket joint.
- Hinge joint
- Pivot joint
- Gliding joint / plane joint
Ball and socket joint
Qn. What is a ball and socket joint?
- A ball and socket joint is a joint that allows movement in all directions.
Qn. Give the examples of the ball and socket joints in the body.
- Shoulder joint
- Hip joint
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