Differentiate between: 

i. Flexor and extensor muscles

ii. Pronator and supinator

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1 Answers

   Flexor Muscles     Extensor Muscles
a. Flexor muscles contract and bring about the bending or flexion of joint. a. Extensor muscles contract and bring about the straightening or extension of joint
b. These muscles decrease the angle between the bones on two sides of a joint. b. These muscles increase the angle between the components of limb.
e.g. Biceps e.g. Triceps

ii. Pronator and supinator: 

Pronator turns the palm downwards and supinator turns the palm upward.

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