Origins, Insertions, and Actions Flashcards
1
Q
- attachment point of the muscle that does not move during muscular contraction
A
origin
2
Q
- attachment that moves during contraction
A
insertion
3
Q
effect the muscle has on a part of the body
A
action
4
Q
Masseter
A
- Zygomatic bone (O)
- Mandibular Angle (I)
- Elevates mandible (A)
5
Q
Temporalis
A
- Temporal bone (O)
- Coronoid Process of Mandible (I)
- Elevates mandible (A)
6
Q
Digastric
A
- Inferior mandible (O)
- Hyoid bone (I)
- depresses mandible (A)
7
Q
Sternocleidomastoid
A
- Manubrium and Medial Clavicle (O)
- Mastoid process of temporal bone (I)
- Head and Neck movements
8
Q
Rectus Abdominis
A
- Pubic Symphysis (O)
- Xiphoid Process, Coastal Cartilage (I)
- Flexes vertebral column, compresses abdomen (A)
9
Q
Trapezius
A
- Occipital bone, dorsal spinous processes (O)
- Clavicle, scapula (I)
- Extends head; elevates scapula (A)
10
Q
Latissimus Dorsi
A
- Dorsal spine, iliac crest (O)
- Close to head of humerus (I)
- Extends arm; adducts and medially rotates arm
11
Q
Rhomboids (major and minor)
A
- Dorsal spinous processes of C7-T5 (O)
- Medial border of scapula (I)
- Adducts scapula (A)
12
Q
Deltoids
A
- clavicle, acromion process, spine of scapula (O)
- Deltoid tuberosity of humerus (I)
- Abducts arm (A)
13
Q
Triceps Brachii
A
- Scapula and humerus (O)
- Olecranon process of ulna (I)
- Extends forearm (A)
14
Q
Pectoralis major
A
- Clavicle, sternum, coastal cartilage (O)
- Greater tubercle of humerus (I)
- Arm movements (A)
15
Q
Biceps brachii
A
- Coracoid process/supraglenoid tubercle of scapula (O)
- radial tuberosity (I)
- flexes forearm (A)
