3. Describe the the developmental relationship that arises between the ventral r

Question

3. Describe the the developmental relationship that arises between the ventral ramus of the spinal nerve and the muscles of limbs. Describe the differences between the nerves of the limbs and the nerves of the trunk wall. Limb Design 1. In the columns below describe the similarities and the differences between the bones and joints of the upper limb and the bones and joints of the lower limb. Describe the major functional differences that arise as a result of the structural differences in the upper and lower limb. Similarities 2. Describe the major structural difference in the limbs of premammalian vertebrates and mammals. Draw some simple diagrams to illustrate and explain the bone-muscle-nerve relationships in the different groups

Explanation / Answer

1) In the following table similarities between upper & lower limb are shown-

In the following table differences between upper & lower limb are shown-

Aligned along the axis of the limb

At right angle with the axis of the limb

Type Upper Limb Lower Limb Ball and socket joints Shoulder Hip Hinge joints Elbow Knee Single bone in proximal segment Humerus Femur Two bones in the distal segment Forearm Leg Homologous parts Carpal Tarsal Pectoral girdle Pelvic girdle

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