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

      

The diagram below represents bones at a joint found in the hind limb of a mammal.
Biology5262017940.jpg
(a) Name the bones labeled X, Y 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


John
(a) X - Femur

Y - Tibia

Z - Fibula

(b) (i) Synovia fluid

(ii) - Acts as a lubricant hence reduces friction between bones at the joint.

- Acts as a shock absorber and distributes pressure evenly around a joint

(c) Ligament

(d) Ball and socket joint allows movement in all planes while the illustrated hinge joint allows movement in one plane only.

(e) Olecranon process.
johnmulu answered the question on May 26, 2017 at 06:54


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