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A&P > Human Muscles > Flashcards

Human Muscles Flashcards

1
Q

Sphincter around mouth

A = Closes and protrudes lips

A

Orbicularis oris

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2
Q

Sphincter around eye

A = Closes eyelids

A

Orbiculares oculi

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3
Q

A = Draws angle of mouth laterally as in tenseness

A

Risorius

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4
Q

Raise angle of mouth; smile

A

Zygomaticus

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5
Q

Compress cheek; blowing and sucking

A

Buccinator

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6
Q

Depress mandible; draws lip downward as in pouting; tightens and wrinkles skin of neck

A

Platysma

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7
Q

Raises eyebrows, wrinkles forehead, draws scalp foreword

A

Frontalis

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8
Q

Draws scalp backward

A

Occipitalis

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9
Q

O = Zygomatic arch

I = Ramus of mandible

A = Elevates mandible

A

Masseter

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10
Q

Elevates and retracts mandible

A

Temporalis

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11
Q

Elevates hyoid and larynx, depresses mandible

A

Digastric

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12
Q

O = Sternum and clavicle

I = Mastoid process of temporal bone

A = If both sides contract, it flexes the neck; if one side contracts, it rotates the head towards the opposite side

A

Sternocleidomastoid

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13
Q

Both sides extend head; one side rotates head to the same side as the contracting muscle

A

Spelnius capitus

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14
Q

O = First 9 ribs

I = Vertebral border of scapula, ventral side

A = Abducts scapula

A

Serratus anterior

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15
Q

O = Ribs 3-5

I = Coracoid process of scapula

A = Depresses scapula; protracts scapula

A

Pec minor

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16
Q

Adducts scapula

A

Rombodieus

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17
Q

O = Occipital bone, ligamentum nuchae, spines of C7-T12

I = Clavicle, acromion, and spine of scapula

A = Elevates (upper portion) or depresses (lower portion) scapula; adducts scapula, extends head

A

Trapezius

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18
Q

O = Clavicle, sternum, costal cartilages of ribs 2-6

I = Greater tubercle of humerus

A = Flexes, adducts, and medially rotates arm

A

Pec major

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19
Q

O = Spinous processes of T7 through all lumbar through sacrum, posterior iliac crest, lumbodorsal fascia

I = Intertubercular groove of humerus

A = Extends, adducts and medially rotates arm

A

Lattisimus dorsi\

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20
Q

O = Clavicle, acromion and spine of scapula

I = Deltoid tuberosity of humerus

A = Abducts arm

A

Deltoid

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21
Q

O = Supraspinous fossa

I = Greater tubercle of humerus

A = Abducts arm

A

Supraspinatus

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22
Q

O = Infraspinous fossa

I = Greater tubercle of humerus

A = Rotates arm laterally

A

Infraspinatus

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23
Q

O = Subscapular fossa

I = Lesser tubercle of humerus

A = Rotates arm medially

A

Subscapularis

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24
Q

Medial rotates and adducts arm

A

Teres major

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25
Q

Rotates arm laterally

A

Teres minor

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26
Q

O = Above the glenoid fossa; coracoid process of scapula

I = Radial tuberosity

A = Flexes forearm (elbow) and supinates forearm

A

Biceps brachii

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27
Q

Flexes forearm

A

Brachialis

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28
Q

O = Long head-below glenoid fossa; Lateral head-lateral and posterior shaft of humerus proximally; Medial head- posterior surface of humerus distally

I = Olecranon process of ulna

A = Extends forearm (elbow)

A

Triceps brachii

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29
Q

Supinates forearm

A

Suppinator

30
Q

Pronates forearm

A

Pronator teres and pronator quadratus

31
Q

O = Medial epicondyle of humerus

I = Ventral surface of metacarpals II, III

A = Flexes and abducts palm

A

Flexor carpi radialis

32
Q

Flexes and adducts palm

A

Flexor carpi ulnaris,

33
Q

Flexes palm

A

Flexor carpi ulnaris and palmaris longus

34
Q

Flexes phalanges

A

Flexor digitorum superficialis, flexor digitorum profundis

35
Q

Extends palm

A

Extensor carpi radialis
Extensor carpi ulnaris
entensor digitorum

36
Q

Extends and abduct palm

A

Extensor carpi radialis

37
Q

Extends and adducts palm

A

Extensor carpi ulnaris

38
Q

Extends phalanges and palm

A

Extensor digitorum

39
Q

O = Iliac crest, sacrum, coccyx

I = Gluteal tuberosity of femur

A = Extends thigh (hip joint) and laterally rotates thigh

A

Gluteus max

40
Q

Muscles that abduct the thigh

A

Gluteus medius, gluteus min, TFL

41
Q

Abducts and medially rotates thigh

A

Glut med and min

42
Q

Tenses lateral fascia, flexes thigh (hip) and abducts thigh

A

TFL

43
Q

O = Pubis

I = Linea aspera of femur

A = Adducts thigh

A

Adductor longus

44
Q

Adducts thigh

A

Adductor longus, magnus, and brevis

45
Q

O = Anterior inferior iliac spine

I = Tibial tuberosity via patellar ligament

A = Extends leg (knee), flexes thigh (hip)

A

Rectus femoris

46
Q

O = Greater trochanter and lateral to linea aspera of femur

I = Tibial tuberosity via patellar ligament

A = Extends leg

A

Vastus lateralis

47
Q

O = Medial to linea aspera of femur

I = Tibial tuberosity via patellar ligament

A = Extends leg

A

Vastus medialis

48
Q

O = Anterior surface of femur

I = Tibial tuberosity via patellar ligament

A = Extends leg

A

Vastus medialis

49
Q

Extends leg

A

Quadriceps femoris

50
Q

Flexes leg

A

Hamstrings

51
Q

O = Ischial tuberosity and linea aspera

I = Lateral condyle of tibia and head of fibula

A = Flexes leg (knee), extends thigh (hip)

A

Bicceps femoris

52
Q

O = Ischial tuberosity

I = Medial surface of proximal tibia

A = Flexes leg and extends thigh

A

Ischial tuberosity

53
Q

O = Ischial tuberosity

I = Medial condyle of tibia

A = Flexes leg and extends thigh

A

Semimembranosus

54
Q

Flexes leg and adducts thigh

A

Gracilis

55
Q

Flex thigh and leg, rotate thigh laterally

A

Sartorius

56
Q

Dorsiflexes foot

A

Tibialis anterior, extensor digitorum longus

57
Q

O = Lateral condyle of tibia, anterior surface of fibula

I = Dorsal surfaces of phalanges 2-5

A = Extends toes, dorsiflexes foot

A

Extensor digitorum longus

58
Q

Plantar flexes and everts foot

A

Peroneus longus = Fibularis longus

59
Q

O = Above lateral and medial condyles of femur

I = Calcaneus by way of Achilles tendon

A = Plantar flexes foot and flexes leg at knee

A

Plantar flexes foot and flexes leg at knee

60
Q

Plantar flexes foot

A

Soleus and flexor digitorum longusand gastrocnemius

61
Q

Flexes toes and plantar flexes foot

A

Flexor digit long

62
Q

O = Lower 8 ribs

I = Linea alba and iliac crest

A = Compresses abdomen; flexes or bends spine; depresses ribs

A

Ex ab oblique

63
Q

A = Compresses abdomen, flexes or bends spine; depresses ribs

A

In ab obl

64
Q

Compresses ab

A

Trans ab

65
Q

O = Xiphoid process and costal cartilages of ribs 5-7

I = Symphysis pubis

A = Compresses abdomen, flexes vertebral column, and depresses ribs

A

Rectus abdominus

66
Q

Increase size of thoracic cavity

A

Diaphragm

67
Q

O = One rib

I = Next rib

A = Breathing [elevates ribs]

A

Ex intercostals

68
Q

O = One rib

I = Next rib

A = Breathing [depresses ribs]

A

In intercostals

69
Q

Extends the vertebral column and bends it laterally

A

Iliocostalis

70
Q

Muscles that extend the vertebrae

A

Erector spinae: iliocostalis, longissimus, and spinalis

A&P (22 decks)

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