Muscles of head, neck, and trunk Flashcards

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1
Q

function of external intercostals

A

elevates the ribs (inhalation)

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2
Q

function of the diaphragm

A

increases thoracic cavity (inhalation)

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3
Q

Origin and insertion of masseter

A

origin: zygomatic arch
insertion: mandibular angle

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4
Q

muscle

A

sternocleidomastoid

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5
Q

muscle

A

occipitofrontalis

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6
Q

muscle

A

external intercostals

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7
Q

bone feature

A

temporal fossa

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8
Q

function of internal intercostals

A

depresses the ribs (exhalation)

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9
Q

Muscle, origin and insertion.

A

masseter

origin: zygomatic arch
insertion: mandibular angle

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10
Q

muscle

A

aponeurosis of the external oblique

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11
Q

muscle

A

internal intercostals

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12
Q

muscle, origin, and insertion.

A

muscle: serratus anterior
origin: ribs 1-8
insertion: entire anterior surface of vertebral border of scapula

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13
Q

function of trapezius

A

raise, rotate, and retract the scapula

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14
Q

serratus anterior origin and insertion

A

origin: ribs 1-8
insertion: entire anterior surface of vertebral border of scapula

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15
Q

muscle

A

thoracolumbar fascia

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16
Q

function of orbicularis oris

A

closes and protrudes lips (duck face)

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17
Q

muscle

A

masseter

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18
Q

muscle

A

inguinal ligament

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19
Q

function of temporalis

A

elevates and retracts mandible

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20
Q

function of rhomboid major

A

elevates and retracts scapula

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21
Q

muscle

A

orbicularis oris

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22
Q

muscle, origin and insertion.

A

muscle: temporalis
origin: temporal fossa
insertion: coronoid process of the mandible

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23
Q

function of serratus anterior

A

protract and hold scapula against chest wall

24
Q

muscle

A

external oblique

25
Q

muscle

A

internal oblique

26
Q

function of external oblique

A

compress abdomen; flex, laterally flex, and rotate vertebral column

27
Q

sternocleidomastoid origin and insertion

A

origin: manubrium of sternum and sternal end of clavicle
insertion: mastoid process

28
Q

temporalis origin and insertion

A

origin: temporal fossa
insertion: coronoid process of mandible

29
Q

muscle

A

linea alba

30
Q

function of platysma

A

depresses mandible

31
Q

Function of masseter

A

elevates mandible

32
Q

function of orbicularis oculi

A

closes eyes

33
Q

Muscles labeled 1, 2, and 3

A
  1. rhomboid minor
  2. rhomboid major
  3. erector spinae
34
Q

function of rhomboid minor

A

elevates and retracts scapula

35
Q

muscle

A

masseter

36
Q

trapezius origin and insertion

A

origin: occipital bone, ligamentum nuchae, and spines of C7-T12
insertion: acromion process, spine of scapula, and acromial end of clavicle

37
Q

muscle

A

sternocleidomastoid

38
Q

muscle

A

rectus abdominis

39
Q

function of buccinator

A

presses cheeks against teeth and lips (blowing or sucking)

40
Q

function of internal oblique

A

compress abdomen; flex, laterally flex, and rotate vertebral column

41
Q

muscle, origin, and insertion.

A

muscle: sternocleidomastoid
origin: manubrium and sternal end of clavical
insertion: mastoid process

42
Q

function of transverse abdominis

A

compress abdomen

43
Q

muscle

A

platysma

44
Q

function of erector spinae

A

extend vertebral column

45
Q

function of sternocleidomastoid

A

laterally rotate and flex head (up and away); forced inhalation

46
Q

What is the red muscle?

A

diaphram

47
Q

function of the levator ani

A

supports pelvic viscera, elevates and retracts the anus

48
Q

muscle

A

transverse abdominis

49
Q

muscle, origin, and insertion.

A

muscle: trapezius
origin: occipital bone, ligamentum nuchae, and spines of C7-T12
insertion: acromion process, spine of scapula, and acromial end of clavicle

50
Q

muscle

A

orbicularis oculi

51
Q

function of occipitofrontalis

A

raises eyebrows

52
Q

muscle

A

buccinator

53
Q

muscle

A

sternocleidomastoid

54
Q

function of rectus abdominis

A

flexes vertebral column, compresses the abdomen

55
Q

muscle

A

temporalis

56
Q

muscle

A

levator ani