Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

A&P I - Grace College > Muscles - Origin, Insertion, & Action > Flashcards

Muscles - Origin, Insertion, & Action Flashcards

1
Q

Buccinator

A

Compresses cheeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Depressor labii inferioris

A

Depresses lower lip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Levator labii superioris

A

Elevates upper lip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Levator anguli oris

A

Elevates corner of mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Mentalis

A

Elevates and protrudes lower lip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Obicularis oris

A

Compresses, purses lips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Risorius

A

Draws corner of mouth to the side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Depressor anguli oris

A

Depresses corner of mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Zygomaticus major

A

Retracts and elevates corner of mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Zygomaticus minor

A

Retracts and elevates upper lip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Corrugator supercili

A

Pulls skin inferiorly and anteriorly; wrinkles brow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Levator palpebrae superloris

A

Elevates upper eyelid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Obicularis oculi

A

Closes eyelid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Procerus

A

Moves nose, changes position and shape of nostrils

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Nasalis

A

Compresses bridge, depresses tip of nose, elevates corners of nostrils

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Temporoparietalis

A

Tenses scalp, moves auricle of ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Occipitofrontalis (Frontal Belly)

A

Raises eyebrows, wrinkles forehead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Occipitofrontalis (Occipital Belly)

A

Tenses and retracts scalp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Platysma

A

Tenses skin of neck, depresses mandible, pulls lower lip down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Inferior rectus

A

Eye looks inferiorly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Medial rectus

A

Eye looks medially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Superior rectus

A

Eye looks superiorly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Lateral rectus

A

Eye looks laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Inferior oblique

A

Eye rolls, looks superiorly and laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Superior oblique
Eye rolls, looks inferiorly and laterally
26
Masseter
Elevates mandible and closes the jaw
27
Temporalis
Elevates the mandible
28
Lateral pterygoid
Opens jaws, protrudes mandible, slides the mandible from side to side (lateral excursion)
29
Medial pterygoid
Elevates the mandible and closes the jaw, slides the mandible from side to side (lateral excursion)
30
Splenius capitis and Splenius cervicis
Together, the two sides extend the neck; alone, each rotates and laterally flexes neck to that side
31
Spinalis cervicis
Extends the neck
32
Spinalis thoracis
Extends vertebral column
33
Longissimus capitis and Longissimus cervicis
Together, the two sides extend the head; alone each rotates and laterally flexes neck to that side
34
Longissimus thoracis
Extends vertebral column; alone, each produces lateral flexion to that side
35
Iliocostalis cervicis
Extends or laterally flexes neck, elevates ribs
36
Iliocostalis thoracis
Stabilizes thoracic vertebrae in extension
37
Iliocostalis lumborum
Extends vertebral column, depresses ribs
38
Semispinalis capitis
Together, the two sides extend the head; alone, each extends and laterally flexes the neck
39
Semispinalis cervicis
Extends vertebral column and rotates toward opposite side
40
Semispinalis thoracis
Extends vertebral column and rotates toward opposite side
41
Multifidus
Extends vertebral column and rotates toward opposite side
42
Rotatores
Extends vertebral column and rotates toward opposite side
43
Interspinales
Extends vertebral column
44
Intertransversarli
Laterally flexes the vertebral column
45
Longus capitis
Together, the two sides flex the neck; alone, each rotates head to that side
46
Longus colli
Flexes or rotates neck; limits hyperextension
47
Quadratus lumborum
Together, they depress ribs; alone, each side laterally flexes vertebral column
48
Scalenes (anterior, middle, and posterior)
Elevate ribs or flex the neck
49
External intercostals
Elevate ribs
50
Internal intercostals
Depress ribs
51
Transversus thoracis
Depress ribs
52
Serratus posterior superior
Elevates ribs, enlarges thoracic cavity
53
Serratus posterior inferior
Pulls ribs inferiorly, also pulls outward, opposing diaphragm
54
External oblique
Compresses abdomen, depresses ribs, flexes or bends spine
55
Internal oblique
Compresses abdomen, depresses ribs, flexes or bends spine
56
Transversus abdominis
Compresses abdomen
57
Diaphragm
Contraction expands thoracic cavity and compresses abdominopelvic cavity
58
Rectus abdominis
Depresses ribs, flexes vertebral column, compresses abdomen
59
Levator scapulae
Origin - Transverse processes of first four cervical vertebrae Insertion - Vertebral border of scapula near superior angle Action - Elevates scapula
60
Pectoralis major
Origin - Anterior-superior surfaces of ribs 2-4 Insertion - Coracoid process of scapula Action - Depresses and protracts shoulder; rotates scapula so glenoid cavity moves inferiorly; elevates ribs if scapula is stationary
61
Rhomboid major
Origin - Spinous processes of superior thoracic vertebrae Insertion - Vertebral border of scapula from spine to inferior angle Action - Adducts scapula and performs downward rotation
62
Rhomboid minor
Origin - Spinous processes of vertebrae C7-T1 Insertion - Vertebral border of scapula near spine Action - Adducts scapula and performs downward rotation
63
Serratus anterior
Origin - Anterior and superior margins of ribs 1–9 Insertion - Anterior surface of vertebral border of scapula Action - Protracts shoulder; rotates scapula so glenoid cavity moves superiorly
64
Subclavius
Origin - First rib Insertion - Clavicle (inferior border) Action - Depresses and protracts shoulder
65
Trapezius
Origin - Occipital bone, ligamentum nuchae, and spinous processes of thoracic vertebrae Insertion - Clavicle and scapula (acromion and scapular spine) Action - Depends on active region and state of other muscles; may (1) elevate, retract, depress, or rotate scapula upward, (2) elevate clavicle, or (3) extend neck
66
Deltoid
Origin - Clavicle and scapula (acromion and adjacent scapular spine) Insertion - Deltoid tuberosity of humerus Action - Whole muscle: Abduction at shoulder Anterior part: Flexion and medial rotation Posterior part: Extension and lateral rotation
67
Supraspinatus
Origin - Supraspinous fossa of scapula Insertion - Lesser tubercle of humerus Action - Abduction at the shoulder
68
Subscapularis
Origin - Subscapular fossa of scapula Insertion - Lesser tubercle of humerus Action - Medial rotation at shoulder
69
Teres major
Origin - Inferior angle of scapula Insertion - Passes medially to reach the medial lip of intertubercular groove of humerus Action - Extension, adduction, and medial rotation at shoulder
70
Infraspinatus
Origin - infraspinous fossa scapula Insertion - Greater tubercle of humerus Action - Lateral rotation at shoulder
71
Teres minor
Origin - Lateral border of scapula Insertion - Passes laterally to reach the greater tubercle of humerus Action - Lateral rotation at shoulder
72
Coracobrachialis
Origin - Coracoid process Insertion - Medial margin of shaft of humerus Action - Adduction and flexion at shoulder
73
Pectoralis major
Origin - Cartilages of ribs 2–6, body of sternum, and inferior, medial portion of clavicle Insertion - Crest of greater tubercle and lateral lip of intertubercular groove of humerus Action - Flexion, adduction, and medial rotation at shoulder
74
Latissimus dorsi
Origin - Spinous processes of inferior thoracic and all lumbar vertebrae, ribs 8-12, and thoracolumbar fascia Insertion - Floor of intertubercular groove of the humerus Action - Extension, adduction, and medial rotation at shoulder
75
Biceps brachii
Origin - Short head from the coracoid process; long head from the supraglenoid tubercle (both on the scapula) Insertion - Tuberosity of radius Action - Flexion at elbow and shoulder; supination
76
Brachialis
Origin - Anterior, distal surface of humerus Insertion - Tuberosity of ulna Action - Flexion at elbow
77
Brachioradialis
Origin - Ridge superior to the lateral epicondyle of humerus Insertion - Lateral aspect of styloid process of radius Action - Flexion at elbow
78
Aconeus
Origin - Posterior, inferior surface of lateral epicondyle of humerus Insertion - Lateral margin of olecranon on ulna Action - Extension at elbow
79
Triceps brachii (lateral head)
Origin - Superior, lateral margin of humerus Insertion - Olecranon of ulna Action - Extension at elbow
80
Triceps brachii (long head)
Origin - Infraglenoid tubercle of scapula Insertion - Olecranon of ulna Action - Extension at elbow, plus extension and adduction at the shoulder
81
Triceps brachii (medial head)
Origin - Posterior surface of humerus inferior to radial groove Insertion - Olecranon of ulna Action - Extension at elbow
82
Pronator quadratus
Origin - Anterior and medial surfaces of distal portion of ulna Insertion - Anterolateral surface of distal portion of radius Action - Pronation
83
Pronator teres
Origin - Medial epicondyle of humerus and coronoid process of ulna Insertion - Midlateral surface of radius Action - Pronation
84
Supinator
Origin - Lateral epicondyle of humerus, annular ligament, and ridge near radial notch of ulna Insertion - Anterolateral surface of radius distal to the radial tuberosity Action - Supination
85
Flexor carpi radialis
Origin - Medial epicondyle of humerus Insertion - Bases of second and third metacarpal bones Action - Flexion and abduction at wrist
86
Flexor carpi ulnaris
Origin - Medial epicondyle of humerus; adjacent medial surface of olecranon and anteromedial portion of ulna Insertion - Pisiform, hamate, and base of fifth metacarpal bone Action - Flexion and adduction at wrist
87
Palmaris longus
Origin - Medial epicondyle of humerus Insertion - Palmar aponeurosis and flexor retinaculum Action - Flexion at wrist
88
Extensor carpi radialis longus
Origin - Lateral supracondylar ridge of humerus Insertion - Base of second metacarpal bone Action - Extension and abduction at wrist
89
Extensor carpi radialis brevis
Origin - Lateral epicondyle of humerus Insertion - Base of third metacarpal bone Action - Extension and abduction at wrist
90
Extensor carpi ulnaris
Origin - Lateral epicondyle of humerus; adjacent dorsal surface of ulna Insertion - Base of fifth metacarpal bone Action - Extension of adduction at wrist
91
Abductor pollicis
Abduction at joins of thumb and wrist
92
Extensor digitorum
Extension at finger joints and wrist
93
Extensor pollicis brevis
Extension at joints of thumb; abduction at wrist
94
Extensor pollicis longus
Extension at joints of thumb; abduction at wrist
95
Extensor indicis
Extension and adduction at joints of index finger
96
Extensor digit minimi
Extension at joints of little finger
97
Flexor digitorum superficialis
Flexion at proximal interphalangeal, metacarpophalangeal, and wrist joints
98
Flexor digitorum profundus
Flexion at distal interphalangeal joints and, to a lesser degree, proximal interphalangeal joints and wrist
99
Flexor pollicis longus
Flexion at joints of thumb
100
Gluteus maximus
Origin - Iliac crest, posterior gluteal line, and lateral surface of ilium; sacrum, coccyx, and thoracolumbar fascia Insertion - Iliotibial tract and gluteal tuberosity of femur Action - Extension and lateral rotation at hip
101
Gluteus medius
Origin - Anterior iliac crest of ilium, lateral surface between posterior and anterior gluteal lines Insertion - Greater trochanter of femur Action - Abduction and medial rotation at hip
102
Gluteus minimus
Origin - Lateral surface of ilium between inferior and anterior gluteal lines Insertion - Greater trochanter of femur Action - Abduction and medial rotation at hip
103
Tensor fasciae latae
Origin - Iliac crest and lateral surface of anterior superior iliac spine Insertion - Iliotibial tract Action - Flexion and medial rotation at hip; tenses fasciae latae which laterally supports the knee
104
Obturators (externus and internus)
Origin - Lateral and medial margins of obturator foramen Insertion - Trachanteric fossa of femur (externus); medial surface of greater trochanter (internus) Action - Lateral rotation at hip
105
Piriformis
Origin - Anterolateral surface of sacrum Insertion - Greater trochanter of femur Action - Lateral rotation and abduction at hip
106
Gemelli (superior and inferior)
Origin - Ischial spine and tuberosity Insertion - Medial surface of greater trochanter with tendon of obturator internus Action - Lateral rotation at hip
107
Quadratus femoris
Origin - Lateral border of ischial tuberosity Insertion - Intertrochanteric crest of femur Action - Lateral rotation at hip
108
Adductor brevis
Origin - Inferior ramus of pubic Insertion - Linea aspera of femur Action - Adduction, flexion, and medial rotation at hip
109
Adductor longus
Origin - Inferior ramus of pubs anterior to adductor brevis Insertion - Linea aspera of femur Action - Adduction, flexion, and medial rotation at hip
110
Adductor magnus
Origin - Inferior ramus of pubis posterior to adductor brevis and ischial tuberosity Insertion - Linea aspera and adductor tubercle of femur Action - Adduction at hip; superior part produces flexion and medial rotation; inferior part produces etension and lateral rotation
111
Pectineus
Origin - Superior ramus of pubis Insertion - Pectineal line inferior to lesser trochanter of femur Action - Flexion, medial rotation, and adduction at hip
112
Gracilis
Origin - Inferior ramus of pubis Insertion - Medial surface of tibia inferior to medial condyle Action - Flexion at knee; adduction and medial rotation at hip
113
Iliacus
Origin - Iliac fossa of ilium Insertion - Femur distal to leser trochanter; tendon fused with that of psoas major Action - Flexion at hip
114
Psoas major
Origin - Anterior surfaces and transverse processes of vertebrae (T12-L5) Insertion - Lesser trochanter in company with iliacus Action - Flexion at hip or lumbar intervertebral joints
115
Biceps femoris
Origin - Ishial tuberosity and linea aspera of femur Insertion - Head of fibula lateral condyle of tibia Action - Flexion at knee; extension and lateral rotation at hip
116
Semimembranosus
Origin - Ischial tuberosity Insertion - Posterior surface of medial condyle of tibia Action - Flexion at knee; extension and medial rotation at hip
117
Semitendinosus
Origin - Ischial tuberosity Insertion - Proximal, medial surface of tibia near insertion of gracilis Action - Flexion at knee; flexion and lateral rotation at hip
118
Sartorius
Origin - Anterior superior iliac spine Insertion - Medial surface of tibia near tibial tuberosity Action - Flexion at knee; flexion and lateral rotation at hip
119
Popliteus
Origin - Lateral condyle of femur Insertion - Posterior surface of proximal tibial shaft Action - Medial rotation of tibia; flexion at knee
120
Rectus femoris
Origin - Anterior inferior iliac spine and superior acetabular rim of ilium Insertion - Tibial tuberosity by patellar ligament Action - Extension at knee; flexion at hip
121
Vastus intermedius
Origin - Anterolateral surface of femur and linea aspera Insertion - Tibial tuberosity by patellar ligament Action - Extension at knee
122
Vastus lateralis
Origin - Anterior and inferior to greater trochanter of femur and along linea aspera Insertion - Tibial tuberosity by patellar ligament Action - Extension at knee
123
Vastus medialis
Origin - Entire length of linea aspera of femur Insertion - Tibial tuberosity by patellar ligament Action - Extension at knee
124
Tibialis anterior
Origin - Lateral condyle and proximal shaft of tibia Insertion - Base of first metatarsal bone and medial cuneiform bone Action - Flexion (dorsiflexion) at ankle; inversion of foot
125
Fibularis tertius
Origin - Distal anterior surface of fibula and interosseous membrane Insertion - Dorsal surface of fifth metatarsal bone Action - Flexion (dorsiflexion) at ankle; eversion of foot

A&P I - Grace College (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions