Flexor Tendon Anatomy Of The Hand

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| By Nosniktaw

Nosniktaw

Community Contributor

Quizzes Created: 1 | Total Attempts: 223

Questions: 6 | Attempts: 223 | Updated: Mar 19, 2023

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Questions and Answers

1.

Which muscle flexes the fingers at the DIPJ?
- A.
  
  Flexor Digitorum Superficialis
- B.
  
  Flexor Pollicis Longus
- C.
  
  Flexor Digitorum Profundus
- D.
  
  Flexor Carpi Ulnaris
Correct Answer
C. Flexor Digitorum Profundus

Explanation
FDP

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2.

What is the name of this flexor?
- A.
  
  Flexor Digitorum Superficialis
- B.
  
  Flexor Pollicis Longus
- C.
  
  Flexor Digitorum Profundus
- D.
  
  Flexor Carpi Ulnaris
Correct Answer
A. Flexor Digitorum Superficialis

Explanation
FDS

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3.

Which muscle is responsible for IPJ flexion of the thumb?
- A.
  
  Flexor Pollicis Brevis
- B.
  
  Flexor Digitorum Profundus
- C.
  
  Flexor Pollicis Longus
- D.
  
  Flexor Digiti Minimi Brevis
Correct Answer
C. Flexor Pollicis Longus

Explanation
FPL

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4.

Where does the common flexor tendon originate?
- A.
  
  Lateral epicondyle of the humerus
- B.
  
  Olecranon process
- C.
  
  Hook of the hamate
- D.
  
  Medial epicondyle of the humerus
Correct Answer
D. Medial epicondyle of the humerus

Explanation
Medial epicondyle

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5.

What are the three main functions of the digital flexor sheath?
- A.
  
  To facilitate smooth gliding of the tendons
- B.
  
  To prevent infection of the flexor tendons
- C.
  
  To act as a fulcrum to provide a mechanical advantage
- D.
  
  To provide a source of tendon nutrition from synovial fluid
- E.
  
  To facilitate isolated flexion of the PIPJ
- F.
  
  To provide a motor nerve supply to the flexor tendons
Correct Answer(s)
A. To facilitate smooth gliding of the tendons
C. To act as a fulcrum to provide a mechanical advantage
D. To provide a source of tendon nutrition from synovial fluid

Explanation
The digital flexor sheath has three main functions. First, it facilitates smooth gliding of the tendons, allowing for efficient movement of the fingers. Second, it acts as a fulcrum, providing a mechanical advantage that enhances the strength and efficiency of finger flexion. Lastly, the sheath provides a source of tendon nutrition by supplying synovial fluid, which nourishes and lubricates the tendons, promoting their health and function.

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Current Version
Mar 19, 2023

Quiz Edited by
ProProfs Editorial Team
Mar 15, 2012

Quiz Created by
Nosniktaw

Flexor Tendon Anatomy Of The Hand

Which muscle flexes the fingers at the DIPJ?

What is the name of this flexor?

Which muscle is responsible for IPJ flexion of the thumb?

Where does the common flexor tendon originate?

What are the three main functions of the digital flexor sheath?