K.C.S.E Biology Q & A - MODEL 2006PP2QN01

K.C.S.E Biology Q & A - MODEL 2006PP2QN01

The diagram below represents bones at a joint found in the hind limb of a mammal.

a) Name the bones labeled XY and Z 
b) i) Name the substance found in the place labeled W. 
ii) State the function of the substance named in (b) (i) above. 
c) Name the structure that joins the bones together at the joint.
d) State the differences between ball and socket joint and the one illustrated in the diagram above.
e) Name the structure at the elbow that performs the same function as the same function as the patella.

answers

​(a) X- Femur
         Y- Tibia
         Z- Fibula
(b) (i) Synovial fluid
 (ii) Lubrication of the joint/ shock absorption
Distribution of pressure
(c) Ligament
(d) Ball and socket joint allows movement in all planes while the illustrated allows movement in one plane only. Accept 3600 for all planes 1800 for one plane.
(e) Olecranon process.