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Anatomy > Human Muscles - Origins and Functions > Flashcards

Human Muscles - Origins and Functions Flashcards

1
Q

latissmus dorsi

A

o - lower 6 thoracic vertebrae
f - extends, adducts, and medially rotates the arm

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2
Q

trapezius

A

o - occipital bone, C7 and thoracic vertebrae
f - stabilizes, elevates, retracts, and rotates scapula

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3
Q

deltoid

A

o - clavicle and scapula
f - adducts arm when all fibers contract simultaneously

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4
Q

biceps brachii

A

o - scapula
f - flexes and supinates the forearm

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5
Q

triceps

A

o - scapula and humerus
f - extends the forearm

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6
Q

brachioradialis

A

o - humerus
f - flexes the forearm

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7
Q

pectoralis major

A

o - clavicle and cartilage of ribs 1-6
f - adducts and medially rotates the arm

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8
Q

serratus anterior

A

o - ribs 1-8
f - rotates scapula so that its inferior angle moves laterally and upward

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9
Q

rectus abdominis

A

o - pelvic bone
f - flexes and rotates the lumbar region of the vertebral column

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10
Q

external oblique

A

o - lower 8 ribs
f - flexes vertebral column and compresses abdominal wall

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11
Q

gluteus maximus

A

o - pelvic bones, sacrum and coccycx
f - extends the thigh

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12
Q

rectus femoris

A

o - pelvic bone
f - extends the leg and flexes the thigh at the hip

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13
Q

vastus lateralis

A

o - femur
f - extends the leg and stabilizes the knee

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14
Q

vastus medialis

A

o - femur
f - extends the leg

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15
Q

biceps femoris

A

o - femur
f - extends the thigh and flexes the leg

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16
Q

semitendinosus

A

o - femur
f - extends the thigh and flexes the leg

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17
Q

semimembranosus

A

o - femur
f - extends the thigh and flexes the leg

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18
Q

gastrocnemius

A

o - femur
f - flexes foot when leg is extended

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19
Q

frontalis

A

o - epicranial aponeurosis
f - raises eyebrows and wrinkles forehead skin horizontally

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20
Q

occipital belly

A

o - occipital and temporal bones
f - fixes aponeurosis and pulls scalp posteriorly

21
Q

masseter

A

o - zygomatic bone
f - elevates the mandible

22
Q

sternocleidomastoid

A

o - sternum and clavicle
f - flexes and laterally rotates the head

23
Q

temporalis

A

o - temporal bone
f - elevates and retracts the mandible

24
Q

orbicularis oculi

A

o - frontal and maxillary bones and ligaments around the orbit
f - closes eye (+ blinking and squinting) and pulls eyebrow inferiorly

25
Q

zygomaticus

A

o - zygomatic bone
f - raises lateral corners of the mouth

26
Q

buccinator

A

o - maxilla and mandible
f - closes, purses, and protrudes lips

27
Q

platysma

A

o - fascia of the chest over pectoral and deltoid muscles
f - tenses skin of the neck, depresses mandible, and pulls lower lip down

28
Q

digastric

A

o - mandible and temporal bone
f - depresses mandible and elevates and steadies the hyoid bone

29
Q

sternothyroid

A

o - sternum an dclavicle
f - depresses the larynx of the hyoid bone

30
Q

sternohyoid

A

o - sternum and clavicle
f - depresses larynx and hyoid bone if the mandible is fixed

31
Q

mylohyoid

A

o - mandible
f - elevates hyoid bone and the floor of the mouth

32
Q

flexor digitorum superficialis

A

o - humerus
f - flexes the hand and 2nd-5th phalanges

33
Q

flexor carpi ulnaris

A

o - humerus
f - flexes and adducts the hand

34
Q

flexor carpi radialis

A

o - humerus
f - flexes the hand

35
Q

extensor carpis ulnaris

A

o - humerus and ulna
f - extends and adducts the hand

36
Q

extensor digitorum

A

o - humerus
f - extends and adducts the hand

37
Q

extensor carpi radialis longus

A

o - humerus
f - extends and adducts the hand

38
Q

fibularis longus

A

o - fibula
f - plantar flexes and everts the foot

39
Q

tibialis anterior

A

o - tibia
f - dorsiflexion and inversion of the foot

40
Q

extensor digitorum longus (leg)

A

o - tibia and fibula
f - extends the toes

41
Q

soleus

A

o - tibia, fibula, and interosseous membrane
f - plantar flexes the foot

42
Q

gracilis

A

o - pelvic bone
f - adducts thigh and flexes and medially rotates the leg

43
Q

gluteus medius

A

o - pelvic bone
f - abducts and medially rotates the thigh

44
Q

tensor fasciae latae

A

o - pelvic bone
f - steadies leg and trunk on the thigh

45
Q

sartorius

A

o - pelvic bone
f - flexes, abducts, and laterally rotates the leg

46
Q

adductor longus

A

o - pelvic bone
f - adducts, flexes, and medially rotates the thigh

47
Q

what muscles make up the hamstrings?

A

semitendinosus, semimembranosus, biceps femoris

48
Q

what muscles make up the quads?

A

rectus femoris, vastus lateralis, vastus intermedius, vastus medialis

Anatomy (5 decks)

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