Exam 2: Muscles of the Upper Limb Flashcards

1
Q

Trapezius

A

-elevates and retracts scapula

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2
Q

Rhomboids (major, minor)

A

-elevate and retract scapula

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3
Q

Levator Scapulae

A

-elevates scapula

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4
Q

Pectoralis Minor

A

-protracts and depresses scapula

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5
Q

Serratus Anterior

A

-protracts and depresses scapula

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6
Q

Pectoralis Major

A
  • flexes and adducts arm/humerus at glenohumeral joint/arm
    - originates on axial skeleton
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7
Q

Latissimus Dorsi

A
  • extends and adducts arm at glenohumeral joint/arm
  • originates on axial skeleton
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8
Q

Deltoid

A
  • abducts, flexes and extends arm
  • originates on scapula
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9
Q

Coracobrachialis

A

-flexes and adducts arm

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10
Q

Teres Major

A

-extends and adducts arm

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11
Q

Rotator Cuff Muscles

A

-provide main support for glenohumeral joint

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12
Q

Subscapularis

A
  • medially rotates arm
  • rotator cuff muscle
  • wind up for pitch
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13
Q

Supraspinatus

A
  • abducts arm
  • rotator cuff muscle
  • execute pitch
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14
Q

Infraspinatus

A
  • laterally rotates arm
  • rotator cuff muscle
  • execute pitch
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15
Q

Teres Minor

A
  • laterally rotates arm, extend arm/shoulder joint
  • rotator cuff muscle
  • finsih pitch, slow down pitching arm
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16
Q

Anterior Arm Muscles

A
  • flexors of forearm/elbow joint
  • biceps brachii
  • brachialis
  • brachioradialis
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17
Q

Posterior Arm Muscles

A
  • extensors of the forearm/elbow joint
  • triceps brachii
  • anconeus
18
Q

Forearm Muscles

A

-Anterior forearm contains pronator and flexor muscles

19
Q

Pronators

A
  • pronator teres (more superficial)
  • pronator quadratus (deep)
20
Q

Flexors

A
  • flex wrist MP joints (knuckles) and/or IP joints
  • most originate from medial epicondyle of humerus
21
Q

Flexor Retinaculum

A
  • band of dense irregular connective tissue to hold flexor tendons close to bone.
  • space underneath is carpal tunnel
22
Q

Flexor Carpi Radialis

A
  • flexes wrist and abducts hand
  • superficial group
23
Q

Palmaris Longus

A
  • flexes wrist
  • superficial group
24
Q

Flexor Carpi Ulnaris

A
  • flexes wrist and adducts hand
  • superficial group
25
Q

Flexor Digitorum Superficialis

A
  • flexes wrist and flexes digits 2 through 5 at the MP and PIP joints (MP=metacarpal-phalangeal PIP=proximal interphalangeal)
  • does not move DIP joint
  • tendons attach to middle phalanges
  • intermediate group
26
Q

Flexor Digitorum Profundus

A
  • flexes wrist and digits 2-5 at the MP, PIP and DIP joints (DIP=distal interphalangeal)
  • tendons attach to distal phalanges
  • deep group
27
Q

Flexor Pollicis Longus

A
  • flexes wrist MP joint, IP joint of thumb
  • deep group
28
Q

Supinator

A
  • supinates forearm
  • biceps brachi supinates too
29
Q

Extensors

A

-extend wrist MP joints and/or IP joints, most originate from lateral epicondyle of humerus

30
Q

Extensor Retinaculum

A
  • holds tendons down
  • keeps them from bowing out
31
Q

Extensor Carpi Radialis Longus

A
  • extends wrist and abducts hand
  • superficial group
32
Q

Extensor Carpi Radialis Brevis

A
  • extends wrist and abducts hand
  • superficial group
33
Q

Extensor Digitorum

A
  • extends wrist and extends digits 2-5 at MP, PIP, and DIP joints
  • superficial group
34
Q

Extensor Carpi Ulnaris

A
  • extends wrist and adducts hand
  • superficial group
35
Q

Extensor Pollicis Longus

A
  • :extends thumb
  • deep group
36
Q

Extensor Pollicis Brevis

A
  • extends thumb
  • deep group
37
Q

Abductor Pollicis Longus

A
  • abducts thumb
  • deep group
38
Q

Thenar muscles

A

-move the thumb

39
Q

Hypothenar muscles

A

-move little finger

40
Q

Midpalmar muscles

A
  • move fingers 2-5
  • all of these muscles flex the MP joints and extend the PIP/DIP joints
    1. Lumbricals: (4) thin, narrow band of muscles
    2. Palmar Interossei: (3) also adduct fingers
    3. Dorsal Interossei: (4) also abduct fingers
41
Q

PAD-DAB

A

Palmer Interossei ADduct, Dorsal Interossei ABduct