Flashcards

Upper limb muscles

Sabrina Swafford Biology English 28 cards

Cards in this deck (28)

1—Subscapularis
Origin: subscapular fossa of Scapula
Insertion: lesser tubercle of Humerus
Action: Holds head of humerus stable in glenoid cavity
-Rotates arm medially
2—Infraspinatus
Origin: infraspinous fossa of Scapula
Insertion: Greater tubercle of Humerus
Action: Holds head of humerus stable in glenoid cavity
-Rotates arm laterally
3—Teres Minor
Origin: lateral border Scapula
Insertion: Greater tubercle of Humerus
Action: Holds head of humerus stable in glenoid cavity
-Rotates arm laterally
4—Teres Major
Origin: Inferior angle of Scapula
Insertion: lesser tubercle of Humerus
Action: Adducts, extends, and medially rotates arm at shoulder joint (synergist to latissimus dorsi)
5—Teres Major (anterior view)
Origin: Inferior angle of Scapula
Insertion: lesser tubercle of Humerus
Action: Adducts, extends, and medially rotates arm at shoulder joint (synergist to latissimus dorsi)
6—Deltoid
Origin: spine & acromion process of Lateral clavicle Scapula
Insertion: deltoid tuberosity of Humerus
Action: Abducts, flexes and medially rotates arm at shoulder joint
7—Deltoid
Origin: spine & acromion process of Lateral clavicle Scapula
Insertion: deltoid tuberosity of Humerus
Action: Abducts, flexes and medially rotates arm at shoulder joint
8—Coracobrachialis
Origin: coracoid process of Scapula
Insertion: Shaft of humerus
Action: Adducts and flexes arm at shoulder joint (synergist to pectoralis major)
9—Biceps Brachii
Origin: Short head- coracoid process of Scapula
Long head- supraglenoid tubercle of Scapula
Insertion: radial tuberosity of Radius
Action: -Flexes forearm at elbow (synergist to brachiallis)
- Supinates forearm
10—Biceps Brachii (lateral view)
Origin: Short head- coracoid process of Scapula
Long head- supraglenoid tubercle of Scapula
Insertion: radial tuberosity of Radius
Action: -Flexes forearm at elbow (synergist to brachiallis)
- Supinates forearm
11—Brachialis
Origin: anterior shaft of Humerus
Insertion: coronoid process of Ulna
Actions: Flexes forearm at elbow
12—Brachialis (lateral view)
Origin: anterior shaft of Humerus
Insertion: coronoid process of Ulna
Actions: Flexes forearm at elbow
13—Triceps Brachii Medial Head
Origin: infraglenoid tubercle of Scapula, Posterior proximal humerus
Insertion: Olecranon process ofUlna
Action: Extends forearm at elbow
14—Triceps Brachii Long Head
Origin: infraglenoid tubercle of Scapula, Posterior proximal humerus
Insertion: Olecranon process ofUlna
Action: Extends forearm at elbow
15—Triceps Brachii Long Head
Lateral view
Origin: infraglenoid tubercle of Scapula, Posterior proximal humerus
Insertion: Olecranon process ofUlna
Action: Extends forearm at elbow
16—Triceps Brachii Lateral Head
Origin: infraglenoid tubercle of Scapula, Posterior proximal humerus
Insertion: Olecranon process ofUlna
Action: Extends forearm at elbow
17—Brachioradialis
Origin: Lateral supracondylar ridge of Humerus
Insertion: Styloid process of Radius
Action: Flexes forearm at elbow (synergist to biceps brachii)
18—Brachioradialis (Posterior view)
Origin: Lateral supracondylar ridge of Humerus
Insertion: Styloid process of Radius
Action: Flexes forearm at elbow (synergist to biceps brachii)
19—Extensor carpi Radialis
Origin: Distal, lateral humerus
Insertion: Metacarpals
Action: Extend hand at wrist
20—Extensor carpi Radialis (anterior view)
Origin: Distal, lateral humerus
Insertion: Metacarpals
Action: Extend hand at wrist
21—Extensor carpi Ulnaris
Origin: Distal, lateral humerus
Insertion: Metacarpals
Action: Extend hand at wrist
22—Extensor digitorum
Origin: Lateral epicondyle of Humerus
Insertion: Distal phalanges
Action: Extends the hands and finger
23—Flexor carpi Radialis
Origin: medial epicondyle of Humerus
Insertion: Metacarpals
Action: Flex hand at wrist
24—Flexor digitorum Superficialis
Origin: -Distal humerus
- Proximal radius or ulna
Insertion: Middle or distal phalanges
Actions: Flex the fingers
25—Flexor carpi Ulnaris
Origin: medial epicondyle of Humerus
Insertion: Metacarpals
Action: Flex hand at wrist
26—Flexor carpi Ulnaris (posterior)
Origin: medial epicondyle of Humerus
Insertion: Metacarpals
Action: Flex hand at wrist
27—Flexor digitorum profundus
Origin: -Distal humerus
-Proximal radius or ulna
Insertion: Middle or distal phalanges
Action: Flex the fingers
28—Flexor digitorum pollicis
Origin: -Distal humerus
-Proximal radius or ulna
Insertion: Middle or distal phalanges
Action: Flex the fingers