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ANAT-A 215 Exam 2 > Muscles of Head, Neck, Trunk > Flashcards

Muscles of Head, Neck, Trunk Flashcards

1
Q
A

Buccinator

Pulls cheeks against teeth when chewing

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2
Q
A

Occipitofrontalis

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3
Q
A

Occipital Belly

Retracts scalp slightly

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4
Q
A

Frontal Belly

Elevates eyebrows and wrinkles skin of forehead

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5
Q
A

Orbicularis Oculi

Closes the eyes

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6
Q
A

Orbicularis Oris

Closes and Purses Lips

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7
Q
A

Platysma

  • Tenses skin of the neck
  • Depresses Lower Lip
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8
Q

Epicranius

A

Composed of the occipitofrontalis muscle and an epicranial aponeurosis

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9
Q

Zygomaticus Major

A

Elevates Corner of Mouth

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10
Q

Depressor Anguli Oris

A

Depresses corner of mouth

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11
Q

Mastication Definition

A

Process of Chewing

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12
Q
A

Masseter

  • Elevates Mandible
  • Protracts Mandible
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13
Q
A

Temporalis

  • Elevates Mandible
  • Retracts Mandible
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14
Q

Medial Pterygoid

A
  • Elevates Mandible
  • Moves Mandible Side to Side
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15
Q

Lateral Pterygoid

A
  • Elevates Mandible
  • Moves Mandible Side To Side
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16
Q
A

Genioglossus

  • Protracts Tongue
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17
Q

Styloglossus

A

Retracts Tongue

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18
Q
A

Hyoglossus

  • Depresses Tongue
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19
Q
A

Sternocleidomastoid

  • Rotates Head to One Side
  • Flex the Head/Neck
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20
Q

Splenius Capitis

A
  • Rotates head to one side
  • Extend the Head/Neck
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21
Q

Suprahyoid Bones Function

A

Elevate the Hyoid Bone

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22
Q
A

Digastric

  • Elevates Hyoid
  • Depresses Mandible
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23
Q
A

Stylohyoid

  • Elevates Hyoid Bone
24
Q
A

Mylohyoid

  • Elevates Hyoid
  • Raises Floor of Mouth
25
Q
A

Geniohyoid

  • Elevates Hyoid Bone
26
Q
A

Sternohyoid

  • Depresses Hyoid
27
Q
A

Sternothyroid

  • Depresses Thyroid Cartilage
28
Q
A

Thyrohyoid

  • Depresses Hyoid Bone
  • Raises Thyroid Cartilage
29
Q

Superficial Back Muscles Function

A

Move the scapula or humerus

30
Q

Quadratus Lumborum Function

A
  • Together
    • Extend Lumbar Vertebral Column
  • Unilaterally
    • Each laterally flexes vertical column
31
Q
32
Q
A

Trapezius

  • Elevates
  • Depresses
  • Rotates
  • Adducts the Scapula
  • Extends Head
33
Q
A

Latissimus Dorsi

Look for this on donor*

34
Q
A

Levator Scapulae

35
Q
A

Rhomboid Muscles

36
Q
A

Erector Spinae

Group of Muscles that extend Verterbral Column

Consist of:

Iliocostalis

Longissimus

Spinalis

37
Q

Superficial Thorax Muscles

A

Move the upper limb and not involved with respiration

38
Q

What type of muscles are Deep Thorax Muscles

A

Repiration Muscles

39
Q

Diaphragm

A

Contraction pulls the central portion down, increasing vertical dimensions of thorax. Flattens out when contracts.

40
Q

External Intercostals

A

Elevate ribs during inhalation, with fibers running infermedially

41
Q

Internal Intercostals

A

Depress ribs during exhalation with fibers running inferlaterally

42
Q
A

Splenius Muscle

43
Q
A

Pectoralis Major

44
Q
A

Pectoralis Minor

Goes from 3-5 Ribs to the Coracoid Process of Scapula

45
Q
A

Serratus Anterior

46
Q
A

Study the location of the Scalenes

47
Q

Bilaterally Definition

A

Flex vertebral column and compress abdominal wall

48
Q
A

External Oblique

Fibers run infermedially, and similar to External Intercostal

49
Q
A

Internal Oblique

Fibers run inferolaterally and similar to Internal Intercostal

50
Q
A

Transversus Abdominis

Laterally flex vertebral column

51
Q
A

Rectus Abdominis

Flex vertebral column and compres sabdominal wall

52
Q

Iliocostalis

A

Laterally flexes vertebral column

53
Q

Longissimus

A

Laterally flexes vertebral column

54
Q

Spinalis

A

Laterally flexes vertebral column

55
Q

Functions of Pelvic Floor and Perineum

A

CLose inferior opening of pelvis

Support the pevlic organs

Assist with defecation, voluntary part of urination and childbirth

ANAT-A 215 Exam 2 (13 decks)

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