QuestionsForearm Deep Flexors

The following muscles are deep flexors of the forearm1 Flexor digitorum profundus

2 Flexor pollicis longus

3 Flexor carpi radialis

4 Pronator quadratus

5 Palmaris Longus

The following muscles are deep flexors of the forearm1 Flexor digitorum profundus T

2 Flexor pollicis longus T

3 Flexor carpi radialis F

4 Pronator quadratus T

5 Palmaris Longus F

There are 3 deep flexors of the forearm.- Flexor digitorum profundus- Flexor pollicis longus- Pronator quadratus

Flexor Digitorum Profundus1 Flexes the wrist joint

2 Flexes the distal interphalangeal joints

3 Extends the metacarpophalangeal joints

4 Extends the proximal interphalangeal joints

5 Extends the distal interphalangeal joints

Flexor Digitorum Profundus1 Flexes the wrist joint T

2 Flexes the distal interphalangeal joints T

3 Extends the metacarpophalangeal joints F

4 Extends the proximal interphalangeal joints F

5 Extends the distal interphalangeal joints F

Flexor Digitorum Profundus1 Originates from the radius only

2 Originates from the ulna

3 Originates from the humerus only

4 Originates from the radius, ulna and humerus

5 Originates from the ulna and humerus only

Flexor Digitorum Profundus1 Originates from the radius only F

2 Originates from the ulna T

3 Originates from the humerus only F

4 Originates from the radius, ulna and humerus F

5 Originates from the ulna and humerus only F

Flexor Digitorum Profundus originates from the proximal 3/4 of medial and anterior surfaces of ulna and the interosseous membrane

Flexor Digitorum Profundus1 Attaches to the middle phalanges of digits 2-5

2 Attaches to the distal phalanges of digits 2-5

3 Is supplied solely by the radial nerve

4 Is supplied solely by the median nerve

5 Is supplied solely by the ulnar nerve

Flexor Digitorum Profundus1 Attaches to the middle phalanges of digits 2-5 F

2 Attaches to the distal phalanges of digits 2-5 T

3 Is supplied solely by the radial nerve F

4 Is supplied solely by the median nerve F

5 Is supplied solely by the ulnar nerve F

Flexor Digitorum Profundus attaches to the base of the distal phalanx of digits 2 – 5.Medial part of FDP is supplied by the ulnar nerveLateral part of FDP is supplied by the anterior interosseous branch of median nerve

Flexor Digitorum Profundus1 Is supplied solely by the radial nerve

2 Is supplied by the posterior interosseous nerve

3 Is supplied by the anterior interosseous nerve and ulnar nerves

4 Is supplied solely by the anterior interosseous nerve

5 Is supplied solely by the ulnar nerve

Medial part of FDP is supplied by the ulnar nerveLateral part of FDP is supplied by the anterior interosseous branch of median nerve

Flexor Digitorum Profundus1 Is supplied solely by the radial nerve F

2 Is supplied by the posterior interosseous nerve F

3 Is supplied by the anterior interosseous nerve and ulnar nerves T

4 Is supplied solely by the anterior interosseous nerve F

5 Is supplied solely by the ulnar nerve F

Medial part of FDP is supplied by the ulnar nerveLateral part of FDP is supplied by the anterior interosseous branch of median nerve

The proximal attachment of Flexor Pollicis Longus is to:1 Radius only

2 Ulna only

3 Humerus only

4 Radius, ulna and humerus

5 Ulna and humerus only

The proximal attachment of Flexor Pollicis Longus is to:1 Radius only T

2 Ulna only F

3 Humerus only F

4 Radius, ulna and humerus F

5 Ulna and humerus only F

FPL originates from the anterior surface of the radius and adjacent interosseous membrane

Flexor Pollicis Longus normally attaches to the1 Scaphoid

2 Trapezium

3 Base of 1st metacarpal

4 Base of proximal phalanx of 1st digit (thumb)

5 Base of distal phalanx of 1st digit (thumb)

Flexor Pollicis Longus normally attaches to the1 Scaphoid F

2 Trapezium F

3 Base of 1st metacarpal F

4 Base of proximal phalanx of 1st digit (thumb) F

5 Base of distal phalanx of 1st digit (thumb) T

Flexor Pollicis Longus1 Is supplied solely by the anterior interosseous nerve

2 Is supplied by the posterior interosseous nerve

3 Is supplied by the median and ulnar nerves

4 Is supplied solely by the radial nerve

5 Is supplied solely by the ulnar nerve

Flexor Pollicis Longus1 Is supplied solely by the anterior interosseous nerve T

2 Is supplied by the posterior interosseous nerve F

3 Is supplied by the median and ulnar nerves F

4 Is supplied solely by the radial nerve F

5 Is supplied solely by the ulnar nerve F

FPL is supplied by the anterior interosseous nerve, a branch of the median nerve

Pronator Quadratus attaches to the1 Radius

2 Ulna

3 Humerus

4 Scaphoid

5 Pisiform

Pronator Quadratus attaches to the1 Radius T

2 Ulna T

3 Humerus F

4 Scaphoid F

5 Pisiform F

Pronator Quadratus originates from the distal 1/4 of anterior surface of ulna and inserts onto the distal 1/4 of anterior surface of radius

Pronator Quadratus1 Is supplied solely by the anterior interosseous nerve

2 Is supplied by the posterior interosseous nerve

3 Is supplied by the median and ulnar nerves

4 Is supplied solely by the radial nerve

5 Is supplied solely by the ulnar nerve

Pronator Quadratus1 Is supplied solely by the anterior interosseous nerve T

2 Is supplied by the posterior interosseous nerve F

3 Is supplied by the median and ulnar nerves F

4 Is supplied solely by the radial nerve F

5 Is supplied solely by the ulnar nerve F

Pronator Quadratus is supplied by the anterior interosseous nerve, a branch of the median nerve

Flexor digitorum profundus (FDP)1 arises in part from the common flexor tendon

2 is innervated exclusively by the median nerve

3 is innervated by the median and radial nerves

4 gives rise to four tendons whose distal attachments are to the bases of the middle phalanges of the digits

5 is a pronator of the forearm

The flexor digitorum profundus (FDP), along with flexor pollicis longus and pronator quadratus, belongs to the deep group of muscles in the flexor compartment of forearm. FDP has a dual motor innervation: the medial half of the muscle by the ulnar nerve, and the radial half of the muscle by the anterior interosseous nerve (also known as the deep branch of the median nerve). The four tendons of FDP (one for each of the fingers, none for the thumb) cross the palm and are attached to the bases of the terminal phalanges of the four fingers.

Flexor digitorum profundus (FDP)1 arises in part from the common flexor tendon F

2 is innervated exclusively by the median nerve F

3 is innervated by the median and radial nerves F

4 gives rise to four tendons whose distal attachments are to the bases of the middle phalanges of the digits

F

5 is a pronator of the forearm F

With regard to the flexor compartment of the forearm:1 flexor pollicis longus is attached to the radius , ulna and

medial epicondyle of humerus

2 the ulnar nerve lies medial to the flexor digitorum profundus muscle

3 pronator quadratus is innervated by the ulnar nerve

4 palmaris longus is absent in 50 % of Caucasian individuals

5 flexor carpi ulnaris arises in part from the common flexor tendon

Pronator quadratus is innervated by the anterior interosseous nerve – a branch of median nervePalmaris longus is absent unilaterally or bilaterally in10 to 12 % of individuals – not 50 %!)

With regard to the flexor compartment of the forearm:1 flexor pollicis longus is attached to the radius , ulna and

medial epicondyle of humerusF

2 the ulnar nerve lies medial to the flexor digitorum profundus muscle

T

3 pronator quadratus is innervated by the ulnar nerve F

4 palmaris longus is absent in 50 % of Caucasian individuals F

5 flexor carpi ulnaris arises in part from the common flexor tendon

T