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Anatomy & Physiology I > Top 20 Muscles > Flashcards

Top 20 Muscles Flashcards

(69 cards)

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1
Q

Temporalis origin

A

temporal fossa

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2
Q

Temporalis insertion

A

anterior portion of mandibular ramus and coronoid process

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3
Q

Temporalis action

A

elevates mandible

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4
Q

Sternocleidomastoid origin

A

Muscular ridge in the anterolateral neck

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5
Q

Sternocleidomastoid insertion

A

mastoid process and superior nuchal line

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6
Q

Sternocleidomastoid action

A

both contracting together flexes the neck

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7
Q

Rectus abdominis origin

A

pubic crest and symphysis

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8
Q

Rectus abdominis insertion

A

xiphoid process and inferior ribs (5-7)

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9
Q

Rectus abdominis action

A

flexes lumbar spine

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10
Q

Iliopsoas iliacus origin

A

inner surface of ilium

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11
Q

Iliopsoas iliacus/psoas major insertion

A

lesser trochanter of femur and shaft immediately inferior

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12
Q

Iliopsoas action

A

flexion of the hip

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13
Q

Pectoralis major origin

A

medial half of anterior surface of clavicle, anterior surface of costal cartilages of ribs 1-6 and adjacent sternum

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14
Q

Pectoralis major insertion

A

greater tubercle of the humerus

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15
Q

Pectoralis major action

A

adducts in frontal plane

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16
Q

Latissimus dorsi origin

A

posterior crest of ilium, spinous processes of T7-S3, ribs 10-12

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17
Q

Latissimus dorsi insertion

A

medial side of intertubercular groove of humerus

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18
Q

Latissimus dorsi action

A

adducts in frontal plane

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19
Q

Deltoid origin

A

3 portions: anterior lateral 1/3 of clavicle, lateral aspect of acromion process and inferior edge of scapular spine

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20
Q

Deltoid insertion

A

deltoid tuberosity of humerus (lateral)

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21
Q

Deltoid action

A

anterior: adducts arm
lateral: abduction of GHJ
posterior: abduction of GHJ

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22
Q

Biceps brachii origin of long head

A

superior margin of glenoid fossa

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23
Q

Biceps brachii insertion

A

radial tiberosity of radius and bicipital aponeurosis

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24
Q

biceps brachii action

A

flexes elbow

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25
biceps brachii short head origin
coracoid process of scapula
26
triceps brachii long head origin
infraglenoid tubercle of scapula
27
triceps brachii lateral head origin
lateral and posterior surfaces of the humerus
28
triceps brachii medial head origin
posterior humerus
29
triceps brachii insertion
olecranon process of ulna
30
triceps brachii action
extends elbow
31
extensor digitorum origin
lateral epicondyle of humerus
32
extensor digitorum insertion
4 tendons to the dorsal surfaces of the base of middle and distal phalanges of fingers 2-5
33
extensor digitorum action
extends digits 2-5 at MCP joints and wrist
34
flexor digitorum superficials origin
medial epicondyle of humerus; medial coronoid process of ulna; upper 2/3 of anterior border of radius
35
flexor digitorum superficials insertion
4 tendons that divide and attach to the sides of medial phalanges of fingers 2-5
36
flexor digitorum superficials action
flexes digits at MCP and PIP joints
37
gluteus maximus origin
posterior 1/4 of iliac crest
38
gluteus maximus insertion
oblique ridge on greater trochanter
39
gluteus maximus action
stabilizes trink in hip extension
40
rectus femoris origin
anterior surface of inferior iliac spine
41
rectus femoris insertion
superior aspect of patella
42
rectus femoris action
extension of the knee
43
biceps femoris long head origin
ischial tuberosity
44
biceps femoris short head origin
lower half of linea aspera and lateral condylar ridge of femur
45
biceps femoris insertion
lateral condyle of tibia and head of fibula
46
biceps femoris action
flexion of knee
47
gastrocnemius medial head origin
posterior surface of the medial femoral condyle
48
gastrocnemius lateral head origin
posterior surface of the lateral femoral condyle
49
gastrocnemius insertion
posterior surface of calcaneus via calcaneal tendon
50
gastrocnemius action
plantar flexion of ankle
51
tibialis anterior origin
upper 2/3 of the lateral surface of tibia
52
tibialis anterior insertion
inner surface of the medial cuneiform and the first metatarsal bone
53
tibialis anterior action
dorsiflexion of the ankle and inversion of the foot
54
supraspinatus origin
medial 2/3 of the suprasinous fossa of the scapula
55
supraspinatus insertion
superiorly on the greater tubercle of the humerus
56
supraspinatus action
stabilizes GHJ
57
infraspinatus origin
medial aspect of infraspinous fossa of the scapula
58
infraspinatus insertion
posteriorly on the greater tubercle of the humerus
59
infraspinatus action
stabilizes GHJ
60
teres minor origin
posteriorly on the upper and middle aspects of the lateral border of the scapula
61
teres minor insertion
posterior on the greater tubercle of the humerus
62
teres minor action
stabilizes GHJ
63
subscapularis origin
entire surface of subscapular fossa
64
subscapularis insertion
lesser tubercle of humerus
65
subscapularis action
stabilizes GHJ
66
Iliopsoas Psoas major/minor origin
on intervertebral cartilages, along bodies and on lower borders of transverse processes of L1-5; body of T12, on sacrum lateral and inferior to L5-S1 articulation
67
iliopsoas psoas minor insertion
pectineal ine and iliopectineal eminece of ilium
68
iliopsoas psoas major action
external rotation of femur
69
iliopsoas psoas minor action
weak flexor of trunk

Anatomy & Physiology I (2 decks)

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