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Anatomy Exam III > Muscle function > Flashcards

Muscle function Flashcards

1
Q

External oblique

A

Compresses and supports abdominal viscera, flexes and rotates trunk

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2
Q

Internal oblique

A

Compresses and supports, abdominal viscera, flexes and rotates trunk

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3
Q

Transversus abdominus

A

Compresses and supports abdominal viscera

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4
Q

Rectus abdominus

A

Flexes trunk and tenses linea alba

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5
Q

Pyramidalis

A

Tenses linea alba

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6
Q

Cremaster

A

Suspends testis and its action is of value in the cremasteric reflex

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7
Q

Iliacus

A

flexes hip and stabilizes hip joint, acts with psoas major

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8
Q

Psoas major

A

flexes hip and trunk with iliacus; flexes vertebral column laterally; used to balance trunk in sitting position

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9
Q

Psoas minor

A

flexes pelvis on vertebral column

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10
Q

Quadratus lumborum

A

extends and laterally flexes vertebral column, flexes 12th rib during inspiration

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11
Q

Extensor hallucis brevis

A

Extends four medial digits

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12
Q

Extensor digitroum brevis

A

Extends four medial digits

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13
Q

Abductor hallucis

A

Abducts and flexes first digit

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14
Q

Flexor digitorum brevis

A

Flexes 2-5 digits

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15
Q

Abductor digiti minimi

A

Abducts and flexes fifth digit

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16
Q

Quadratus plantae

A

Correccts pull of flexor digitorum longus tendon (resulting in straight pulling of the toes)

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17
Q

Lumbricales

A

Flexion / Extension

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18
Q

Flexor hallucis brevis

A

Flexes first digit

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19
Q

Adductor hallucis

A

Adducts first digit (maintains transverse arch of foot)

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20
Q

Flexor digiti minimi brevis

A

Flexes fifth digit

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21
Q

Interossei muscles

A

Adducts digits 2-4, flexion, and extends phalanges

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22
Q

Tibialis anterior

A

Dorsiflexes foot at ankle and inverts foot

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23
Q

Extensor digitorum longus

A

Extends lateral four digits

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24
Q

Extensor hallucis longus

A

Extends great toe, dorsiflexes foot at ankle

25
Q

F. P. tertius

A

Dorsiflexes foot at ankle and aids in eversion of foot

26
Q

F. P. longus

A

Everts foot and weakly plantar flexes foot at ankle

27
Q

F. P. brevis

A

Everts foot and weakly plantar flexes foot at ankle

28
Q

Tibialis posterior

A

Plantar flexes foot at ankle and inverts foot

29
Q

Gastrocneumius

A

Plantar flexes foot at ankle joint, assists flexion of knee joint, raises heel during walking

30
Q

Soleus

A

Plantar flexes foot at ankle, stabilizes leg over foot

31
Q

Plantaris

A

weakly assists gastrocnemius

32
Q

Popliteus

A

weakly flexes knee and unlocks it by rotating femur on fixed tibia

33
Q

Flexor digitorum longus

A

Flexes lateral four digits and plantar flexes foot at ankle, supports longitudinal arches of foot

34
Q

Flexor hallucis longus

A

flexes joints of great toe, weakly plantar flexes foot at ankle

35
Q

Rectus femoris

A

Extends leg at knee joint and flexes thigh at hip joint (quad)

36
Q

V. medialis

A

Extends leg at knee joint

37
Q

V. lateralis

A

Extends leg at knee joint

38
Q

V. intermedius

A

Extends leg a knee joint

39
Q

Iliacus

A

Flexes thigh at hips and stabilizes hip joint, acts with psoas major

40
Q

Pectineus

A

Adducts and flexes thigh at hip

41
Q

Obturator externus

A

Laterally rotates thigh, stabilizes head of femur in acetabulum

42
Q

Gracilis

A

Adducts thigh, flexes and medially rotates leg

43
Q

Adductor longus

A

Adducts thigh at hip

44
Q

Adductor brevis

A

Adducts thigh at hip, weak hip flexor

45
Q

Adductor magus

A

Adducts thigh at hip

46
Q

Psoas major

A

Flexes hip; flexes trunk; flexes vertebral laterally

47
Q

Gemellus superior

A

Latearly rotates extended thigh at hip

48
Q

Gemellus inferior

A

Abducts flexed thigh at hip

49
Q

Piriformis

A

Abducts flexed thigh at hip

50
Q

Gluteus minimus

A

Abducts and medially rotates thigh at hips, steadies pelvis on leg when opposite leg is raised

51
Q

Gluteus medius

A

Abducts and medially rotates thigh at hips, steadies pelvis on leg when opposite leg is raised

52
Q

Gluteus maximus

A

Extends flexed thigh, assists in lateral rotation, abducts thigh

53
Q

Quadratus femoris

A

Laterally rotates thigh at hip

54
Q

Tensor fascia lata

A

Abducts and flexes thigh at hip; helps to keep knee extended

55
Q

Semitendinosus

A

Flexes leg, extends thigh

56
Q

Semimembranosus

A

Flexes leg, extends thigh

57
Q

Biceps femoris

A

Flexes and laterally rotates leg, extends thigh at hip

58
Q

Articularis genus

A

Pulls suprapatella bursa superiorly with extension of the knee

Anatomy Exam III (8 decks)

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