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Anatomy > Anterior Forearm And Palmar Hand > Flashcards

Anterior Forearm And Palmar Hand Flashcards

1
Q

What are the muscles of the superficial layer of the anterior forearm?

A

Pronator teres
Flexor Carpi radialis
Palmaris longus
Flexor Carpi ulnaris

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2
Q

Origin, insertion, Innervation and Muscle actions of pronator teres?

A

O: Medial epicondyle have a humeral, and ulnar heads
I: Midshaft of radius
In:Median nerve which passes between 2 heads
MA: Pronates forearm

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3
Q

Origin, insertion, Innervation and Muscle actions of Flexor Carpi radialis?

A

O: Common tendon
I: base of 2nd metacarpal
In: median nerve
MA: flexes and abducts wrists

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4
Q

Origin, insertion, Innervation and Muscle actions of Palmaris longus

A

O: common tendon
I: palmar aponeurosis
In: median nerve
MA: Flexes wrist

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5
Q

Origin, insertion, Innervation and Muscle actions of Flexor Carpi ulnaris?

A

O: common tendon and ulna
I: pisiform and hamate
In: ulnar nerve which passes thru the 2 heads
MA: Flexes and adducts wrist

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6
Q

Origin, insertion, Innervation and Muscle actions of Flexor digitorum superficialis?

A

Constitued the intermediate layer of the forearm muscles
O: common tendon, radius and ulna
I: Middle phalanges of 2-5
In: median nerve
MA: Flexes MP and PIP joints of 2-5 fingers

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7
Q

What are the muscles of the deep layer of the anterior forearm?

A

Flexor digitorum profundis
Flexor pollicis longus
Pronator quadratus

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8
Q

Origin, insertion, Innervation and Muscle actions of Flexor digitorum profundis?

A

O: IOM and ulna
I: Distal phalanges 2-5
In: Median and ulnar nerves
MA: flexes all joints (MP, PIP, DIP) of 2-5

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9
Q

Origin, insertion, Innervation and Muscle actions of Flexor pollicis longus?

A

O: IOM and radius
I: distal phalanx of thumb
In: median nerve
MA: Flexes all joints of thumb

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10
Q

Origin, insertion, Innervation and Muscle actions of pronator quadratus?

A

O: ulna
I: radius
In: median nerve
MA: pronates forearm

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11
Q

What are the muscles of the thenar eminence?

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponents pollicis

Adductor pollicis is not part of the thenar eminence but move the thumb

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12
Q

Origin, insertion, Innervation and Muscle actions of the abductor pollicis brevis?

A

O: Trapezium
I: radial side of base of the proximal phalanx
Inn: recurrent median
MA: abducts thumb at MP and CMC joints

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13
Q

Origin, insertion, Innervation and Muscle actions of Flexor pollicis brevis?

A

O: trapezium
I: base of proximal phalanx
In: recurrent median
MA: flexes thumb at MP and CMC joints

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14
Q

Origin, insertion, Innervation and Muscle actions of the opponens pollicis?

A

O: trapezium
I: base of 1st metacarpal
In: recurrent median
MA: Flexes, abducts, medially rotates thumb at CMC joint
Adducts, flexes medially rotates thumb in opposition toward other digits

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15
Q

Origin, insertion, Innervation and Muscle actions of Adductor pollicis?

A

O: transverse head from 3rd metacarpal, oblique head from base of 2-3 rd metacarpal and capitate
I: base of proximal phalanx
In: deep ulnar
MA:Adducts thumb at CMC joint and aids in flexion of the CMC and MP joints (pinch grip)

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16
Q

What are the muscles of the hypothenar eminence?

A

Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi

17
Q

Origin, insertion, Innervation and Muscle actions of ADM?

A

O: pisiform
I: medial side of the base of the proximal phalanx
IN: deep ulnar
MA: abducts MP joint of 5th digit

18
Q

Origin, insertion, Innervation and Muscle actions of FDM?

A

O: hook of hamate
I: medial side of the base of proximal phalanx
In: Deep ulnar
MA: Flexes MP joint of 5th

19
Q

Origin, insertion, Innervation and Muscle actions of ODM?

A

O: hook of the hamate
I: body of 5th metacarpal
In: deep ulnar
MA: laterally rotates and helps flex the CMC joint, bring 5th digit towards the mid palm for opposition

20
Q

What are the characteristics of the lumbricals?

A

4 worm like muscles arise from the tendons
Flexes MP joints and extends IP joints
1 and 2 lumbricals innervated by median nerve
3 and 4 lumbricals innervated by deep ulnar

21
Q

What are the characteristics of the palmar interossei?

A

3 deep slender muscles
Insert on the extensor of the same digit
Adducts finger toward 3rd finger
Aids lumbricals in flexion of MP and extension of IP

Anatomy (20 decks)

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