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A&P > Muscles and insersions-Lab Practical 4 > Flashcards

Muscles and insersions-Lab Practical 4 Flashcards

1
Q

Orbicularis oris origin

A

Maxilla and mandible

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2
Q

Orbicularis oris insertion

A

Lips

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3
Q

Orbicularis oris action

A

Closes and purses lips (“kissing muscle”)

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4
Q

Zygomaticus major origin

A

Zygomatic bone

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5
Q

Zygomaticus major insertion

A

Angle of mouth

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6
Q

Zygomaticus major/minor

action

A

Smiling muscles

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7
Q

Zygomaticus minor origin

A

Zygomatic bone

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8
Q

Zygomaticus minor insertion

A

Upper lip

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9
Q

Buccinator origin

A

Alveolar processes

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10
Q

Buccinator insertion

A

Fibers surrounding the orbicularis oris

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11
Q

Buccinator action

A

Compresses cheek (the “trumpeter’s muscle”)

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12
Q

Platysma origin

A

Superior thorax

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13
Q

Platysma insertion

A

Mandible and skin of cheek

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14
Q

Platysma action

A

Tenses skin of neck and depresses mandible

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15
Q

Risorius origin

A

Fascia around the parotid salivary gland

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16
Q

Risorius insertion

A

Angle of the mouth

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17
Q

Risorius action

A

Draws corners of mouth to the side

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18
Q

Corrugator supercilii origin

A

Frontal bone

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19
Q

Corrugator supercilii insertion

A

Eyebrow

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20
Q

Corrugator supercilii action

A

Wrinkles eyebrows

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21
Q

Orbicularis oculi origin

A

Medial margin of orbit

22
Q

Orbicularis oculi insertion

A

Skin around the eyelids

23
Q

Orbicularis oculi action

A

Closes eye

24
Q

Masseter origin

A

Zygomatic arch

25
Q

Masseter insertion

A

Mandibular ramus

26
Q

Masseter action

A

Elevates mandible

27
Q

Temporalis origin

A

Temporal bone

28
Q

Temporalis insertion

A

Coronoid process of the mandible

29
Q

Temporalis action

A

Elevates mandible

30
Q

Sternocleidomastoid origin

A

Sternum and Clavicle

31
Q

Sternocleidomastoid insertion

A

Mastoid process

32
Q

Sternocleidomastoid action

A
  1. Together, the produce flexion of the neck

2. Alone, each flexes head toward shoulder and rotates face to opposite side

33
Q

Semispinalis capitis origin

A

Transverse processes of lower cervical and upper thoracic vertebrae

34
Q

Semispinalis capitis insertion

A

Occipital bone between nuchal lines

35
Q

Semispinalis capitis action

A

Bilateral contraction: extends the head

Unilateral contraction: extends and laterally flexes neck

36
Q

Semispinalis cervicis origin

A

Transverse processes of T1-T5

37
Q

Semispinalis cervicis insertion

A

Spinous processes of C2-C5

38
Q

Semispinalis cervicis action

A

Extends vertebral column and rotates towards the opposite side

39
Q

Semispinalis thoracis origin

A

Transverse processes of T6-T10

40
Q

Semispinalis thoracis insertion

A

Spinous processes of C5-T4

41
Q

Semispinalis thoracis action

A

Extends vertebral column and rotates towards the opposite side

42
Q

External intercostals origin

A

Inferior border of each rib

43
Q

External intercostals insertion

A

Superior border of adjacent inferior rib

44
Q

External intercostals action

A

Elevation of ribs

45
Q

Internal intercostals origin

A

Superior border of each rib

46
Q

Internal intercostals insertion

A

Inferior border of adjacent superior rib

47
Q

Internal intercostals action

A

Depression of ribs

48
Q

Rectus abdominis origin

A

Superior surface of pubis

49
Q

Rectus abdominis insertion

A

Xiphoid process and costal cartilage of ribs 5-7

50
Q

Rectus abdominis action

A

Flexes vertebral column and depresses ribs

A&P (13 decks)

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