Which one of the following muscles has a dual innervation?*Flexor digitorum superficialisFlexor digitorum profundusPronator teresEx
Question
Which one of the following muscles has a dual innervation?
Flexor digitorum superficialis
Flexor digitorum profundus
Pronator teres
Ex
Solution
The muscle that has dual innervation among the options provided is the Flexor digitorum profundus. This muscle is innervated by the median nerve and the ulnar nerve. Here's the step by step explanation:
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Flexor digitorum superficialis: This muscle is innervated by the median nerve. It does not have dual innervation.
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Flexor digitorum profundus: This muscle has dual innervation. The medial (ulnar) part, which flexes the distal joints of the 4th and 5th digits, is innervated by the ulnar nerve. The lateral (radial) part, which flexes the distal joints of the 2nd and 3rd digits, is innervated by the anterior interosseous nerve (a branch of the median nerve).
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Pronator teres: This muscle is innervated by the median nerve. It does not have dual innervation.
So, the answer is Flexor digitorum profundus.
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