Exam 2: Muscles of the Upper Limb Flashcards
1
Q
Trapezius
A
-elevates and retracts scapula
2
Q
Rhomboids (major, minor)
A
-elevate and retract scapula
3
Q
Levator Scapulae
A
-elevates scapula
4
Q
Pectoralis Minor
A
-protracts and depresses scapula
5
Q
Serratus Anterior
A
-protracts and depresses scapula
6
Q
Pectoralis Major
A
- flexes and adducts arm/humerus at glenohumeral joint/arm
- originates on axial skeleton
7
Q
Latissimus Dorsi
A
- extends and adducts arm at glenohumeral joint/arm
- originates on axial skeleton
8
Q
Deltoid
A
- abducts, flexes and extends arm
- originates on scapula
9
Q
Coracobrachialis
A
-flexes and adducts arm
10
Q
Teres Major
A
-extends and adducts arm
11
Q
Rotator Cuff Muscles
A
-provide main support for glenohumeral joint
12
Q
Subscapularis
A
- medially rotates arm
- rotator cuff muscle
- wind up for pitch
13
Q
Supraspinatus
A
- abducts arm
- rotator cuff muscle
- execute pitch
14
Q
Infraspinatus
A
- laterally rotates arm
- rotator cuff muscle
- execute pitch
15
Q
Teres Minor
A
- laterally rotates arm, extend arm/shoulder joint
- rotator cuff muscle
- finsih pitch, slow down pitching arm
16
Q
Anterior Arm Muscles
A
- flexors of forearm/elbow joint
- biceps brachii
- brachialis
- brachioradialis
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
Flexor Digitorum Superficialis
- 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
Flexor Digitorum Profundus
- flexes wrist and digits 2-5 at the MP, PIP and DIP joints (DIP=distal interphalangeal)
- tendons attach to distal phalanges
- deep group
27
Flexor Pollicis Longus
- flexes wrist MP joint, IP joint of thumb
- deep group
28
Supinator
- supinates forearm
- biceps brachi supinates too
29
Extensors
-extend wrist MP joints and/or IP joints, most originate from lateral epicondyle of humerus
30
Extensor Retinaculum
- holds tendons down
- keeps them from bowing out
31
Extensor Carpi Radialis Longus
- extends wrist and abducts hand
- superficial group
32
Extensor Carpi Radialis Brevis
- extends wrist and abducts hand
- superficial group
33
Extensor Digitorum
- extends wrist and extends digits 2-5 at MP, PIP, and DIP joints
- superficial group
34
Extensor Carpi Ulnaris
- extends wrist and adducts hand
- superficial group
35
Extensor Pollicis Longus
- :extends thumb
- deep group
36
Extensor Pollicis Brevis
- extends thumb
- deep group
37
Abductor Pollicis Longus
- abducts thumb
- deep group
38
Thenar muscles
-move the thumb
## Footnote
39
Hypothenar muscles
-move little finger
40
Midpalmar muscles
- 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
PAD-DAB
Palmer Interossei ADduct, Dorsal Interossei ABduct
