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A+P: Muscles > Action, Origin, Insertion Muscles > Flashcards

Action, Origin, Insertion Muscles Flashcards

(58 cards)

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1
Q

Masseter

A

A: closes mouth
O: Maxilla
I: mandible

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2
Q

Temporalis

A

A: elevates and retracts mandible
O: temporal bone
I: mandible

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3
Q

Genioglossus

A

A: depresses tongue and protracts it
O: mandible
I: tongue

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4
Q

Stylohyoid

A

A: elevates hyoid and draws it posteriorly
O: styloid process
I: hyoid bone

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5
Q

Digastric

A

A: elevates hyoid, depresses mandible
O: mandible, mastoid process
I: hyoid bone

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6
Q

Sternocleidomastoid

A

A: bilaterally (flex neck), unilaterally (rotate head side to side, opposite contracting muscle
O: sternum, clavicle
I: mastoid process

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7
Q

Diaphragm

A

A: expand thoracic cavity
O: xiphoid process, ribs, lumbar vertebrae
I: central tendon

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8
Q

External Intercostals

A

A: elevates ribs for inhalation
O: inferior border of rib above
I: superior border of rib below

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9
Q

Internal intercostals

A

A: depresses ribs for forced exhalation
O: superior border of rib below
I: inferior border of rib above

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10
Q

Rectus abdominis

A

A: flexes trunk
O: pubic crest
I: xiphoid process

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11
Q

External oblique

A

A: compresses abdomen, flexion and lateral flexion of trunk
O: inferior eight ribs,
I: iliac crest

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12
Q

Internal oblique

A

A: compresses abdomen, flexion and lateral flexion of trunk
O: iliac crest
I: last three or four ribs

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13
Q

Transversus abdominis

A

A: compresses abdomen
O: iliac crest
I: xiphoid process

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14
Q

Pectoralis major

A

A: adducts and medially rotates arm at shoulder, clavicular head flexes arm, sternocostal head extends arm
O: clavicle, sternum, ribs
I: greater tubercle and intertubercular sulcus

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15
Q

Pectoralis minor

A

A: depresses and abducts scapula, elevates ribs during forced inhalation
O: ribs 3-5
I: coracoid process of scapula

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16
Q

Serratus anterior

A

A: abducts scapula, elevates ribs
O: superior 8 or 9 ribs
I: scapula

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17
Q

Trapezius

A

A: elevates, depresses, and adducts scapula, extends head
O: superior nuchal line, 7th cervical and all thoracic vertebrae
I: clavicle and scapula

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18
Q

Levator scapulae

A

A: elevates scapula
O: superior cervical vertebrae
I: scapula

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19
Q

Rhomboideus major

A

A: elevates and adducts scapula
O: 2nd to 5th thoracic vertebrae
I: vertebral border of scapula

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20
Q

Rhomboideus minor

A

A: elevates and adducts scapula
O: 7th cervical and first thoracic vertebrae
I: scapula

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21
Q

Latissimus dorsi

A

A: extends, adducts, and medially rotates humerus
O: iliac and sacral crests
I: intertubercular sulcus

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22
Q

Deltoid

A

A: abducts, flexes, and extends arm
O: scapula
I: deltoid tuberosity

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23
Q

Teres major

A

A: extends arm
O: inferior angle of scapula
I: intertubercular groove of humerus

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24
Q

Teres minor

Study These Flashcards
A

A: extends and adducts arm
O: scapula
I: greater tubercle

25
Supraspinatus
A: abducts arm O: supraspinatus fossa of scapula I: greater tubercle of humerus
26
Infraspinatus
A: lateral rotation at shoulder O: infraspinatus fossa of scapula I: greater tubercle of humerus
27
Subscapularis
A: medial rotation at shoulder O: subscapular fossa of scapula I: lesser tubercle of humerus
28
Coracobrachialis
A: flexes and adducts arm at shoulder O: coracoid process I: humerus
29
Subclavius
A: depresses and protracts shoulder O: first rib I: clavicle
30
Biceps brachii
A: flexes forearm at elbow, supinates forearm O: supraglenoid tubercle and coracoid process I: radial tuberosity
31
Brachialis
A: strongest forearm flexor at elbow joint O: humerus I: ulnar tuberosity
32
Brachioradialis
A: flexes forearm at elbow O: humerus I: styloid process of radius
33
Triceps Brachii
A: extends forearm at elbow joint O: infraglenoid tubercle of scapula, posterior surface of humerus (x2) I: olecranon of ulna
34
Supinator
A: supinates forearm O: lateral epicondyle of humerus I: proximal 1/3 of radius
35
Pronator teres
A: pronates forearm O: medial epicondyle of humerus and coronoid process of ulna I: radius
36
Palmaris longus
A: weakly flexes wrist O: medial epicondyle of humerus I: palmar aponeurosis
37
Gluteus maximus
A: extends thigh at hip and laterally rotates thigh O: iliac crest I: iliotibial tract
38
Gluteus medius and minimus
A: abducts and medially rotates hip O: ilium I: greater trochanter
39
Tensor fasciae latae
A: flexes and abducts thigh at hip joint O: iliac crest I: iliotibial tract
40
Pectineus
A: flexes and adducts hip O: pubic I: lesser trochanter
41
Adductor brevis
A: adducts, flexes hip O: pubis I: linea aspera
42
Adductor longus
A: adducts and flexes hip O: pubic crest I: linea aspera
43
Adductor magnus
A: adducts, flexes hip O: pubic and ischial tuberosity I: linea aspera
44
Gracilis
A: adducts hip, flexes knee O: pubic I: medial proximal tibia
45
Rectus femoris
A: extends knee, flexes hip O: iliac spine I: tibial tuberosity
46
Vastus medialis
A: extends knee O: linea aspera I: tibial tuberosity
47
Vastus lateralis
A: extends knee O: greater trochanter and linea aspera I: tibial tuberosity
48
Vastus intermedius
A: extends knee O: femur I: tibial tuberosity
49
Sartorius
A: flexes knee, flexes abducts and laterally rotates hip O: anterior superior iliac spine I: tibia
50
Biceps femoris
A: flexes knee, extends hip O: ischial tuberosity I: tibia
51
Semitendinosus
A: flexes knee, extends hip O: ischial tuberosity I: tibia
52
Semimembranosus
A: flexes knee, extends hip O: ischial tuberosity I: medial condyle of tibia
53
Gastrocnemius
A: plantar flexes ankle, flexes knee and inverts foot O: lateral and medial epicondyles of femur I: calcaneus
54
Soleus
A: plantar flexes ankle O: fibula and tibia I: calcaneus
55
Peroneus longus
A: plantar flexes ankle, everts foot O: upper 2/3 of fibula I: first metatarsal and fist cuneiform
56
Tibialis anterior
A: dorsiflexes ankle, inverts foot O: lateral condyle, tibia I: first metatarsal and first cuneiform
57
Tibialis posterior
A: planter flexes ankle, inverts foot O: posterior tibia and fibular I: metatarsals, navicular, all three cuneiforms, cuboid
58

A+P: Muscles (14 decks)

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