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Anatomy > Axial muscles > Flashcards

Axial muscles Flashcards

Axial Muscles

0
Q

What is the action is the occipitofrontalis?

A

Scalp & eyebrows

Wrinkles skin of forehead

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1
Q

What muscles are a part of the epicranius muscle?

A
  • frontal belly of occipitofrontalis

- occipital belly of occipitofrontalis

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2
Q

What is the action of the occipital belly of occipitofrontalus?

A

Retracts scalp

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3
Q

What is the O/I of the epicranius?

A

O/I: extends over cranium. Attaches to nuchal lines & soft tissue of eyebrows (epicranial aponeurosis)

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4
Q

What are the paired muscles raises upper lip to “snarl”?

A

Levator Labii Superioris

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5
Q

Where is the O/I of the Levator Labii Superioris?

A

O: lower margin of orbit above the infraorbital foramen
I: skin & muscles of upper lip

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6
Q

What muscle is located inside and raises upper eyelid?

EX) Surprise!

A

Levator Palpebrae Superioris

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7
Q

Where are the O/I of the Levator Palpebrae Superioris?

A

O: Lesser wing of sphenoid
I: Upper eyelid CT

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8
Q

What muscle surrounds the orbit and controls blinking/squinting?

A

Orbicularis Oculi

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9
Q

What muscle moves the mouth angles up to smile/laugh?

A

Zygomaticus Major

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10
Q

Where are the O/I of the Orbicularis Oculi?

A

O: Medial orbit
I: skin around eye

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11
Q

Where are the O/I of the Zygomaticus Major?

A

O: Zygomatic Bone
I: Orbicularis Oris muscle @ corners of mouth

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12
Q

What muscles surrounds the mouth and closes the lips when pouting/kissing?

A

Orbicularis Oris

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13
Q

Where are the O/I of the Orbicularis Oris?

A

O: Mandible & Maxilla
I: Soft Tissues at mouth corners

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14
Q

Which muscle “flares the nostrils”?

A

Nasalis

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15
Q

Which muscle wrinkles the nose?

A

Procerus

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16
Q

What are the cheek muscles?

A

Buccinator

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17
Q

What muscle makes the mouth frown by pulling corners laterally/medially

A

Depressor Anguli Oris

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18
Q

What muscle draws the lip muscles inferiorily?

A

Depressor Labii Inferioris

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19
Q

What muscle draws superiorly & laterally?

“smile”?

A

Levator Anguli Oris

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20
Q

What muscle makes the lips “pout” and wrinkles the chin?

A

Mentalis

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21
Q

Which muscle “tenses the lips” laterally?

A

Risorius

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22
Q

Where are the O/I for the Buccinator?

A

O: alveolar processes of mandible/maxilla
I: Oribularis Oris (deep muscles around mouth)

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23
Q

What muscle tenses the skin of the neck?

A

*Platysma

24
Q

Where are the O/I for the Platysma?

A

O: between 2nd rib & acromion of scapula
I: mandible & muscles around mouth/chin/jaw

25
Q

Which muscle elevates & retracts mandible?

A

Temporalis

26
Q

Where are the O/I of the Temporalis?

A

O: Temporal Lines
I: Coronoid Process of Mandible

27
Q

Which muscle protracts the mandible?

A

Masseter

28
Q

Where are the O/I of the Masseter?

A

O: Zygomatic Arch
I: angle/ramus of mandible

29
Q

Where are the O/I of the Sternocleidomastoid?

A

2-heads
O: manubrium & medial clavicle
I: mastoid process of temporal

30
Q

Which muscle turns neck/bend head laterally?

A

Sternocleidomastoid

31
Q

Which muscle depresses the Hyoid & Larynx?

A

Sternohyoid

32
Q

Where are the O/I of the Sternohyoid?

A

O: clavical & manubrium
I: hyoid

33
Q

what is the white layer of the eye called?

A

Sclera

34
Q

Which muscle of the Masticatory system is the strongest & most important?

A

Masseter

35
Q

What are the 2 types of Extrinsic Eye muscles?

A

Rectus (Medial, Lateral, Superior, Inferior)

Oblique (Inferior & Superior)

36
Q

Which 4 muscles are part of the Infrahyoid Group?

A

Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid

37
Q

What 4 muscles are a part of the Suprahyoid muscles?

A

Digastric
Geniohyoid
Mylohyoid
Stylohyoid

38
Q

What muscle depresses the mandible and elevates the hyoid?

A

Digastric

39
Q

Which muscles elevate the hyoid?

A

Geniohyoid & Stylohyoid

40
Q

What are the 4, sheet like, muscles of the abdominal Wall?

*TIRE

A

Transverse Abdominus
Internal Oblique
Rectus Abdominus
External Oblique

41
Q

Which muscles help the mandible “chew”?

A

Temporalis, Masseter, Lateral&Medial Pterygoids

42
Q

Which muscle elevates the 1st & 2nd rib during forced inhalation?

A

Scalene (Anterior, Medial, Posterior)

43
Q

What dome shaped muscle separates the abdominal & thoracic cavities?

A

Diaphragm

44
Q

What is the superficial medial muscle layer on the wall of the abdomen?
*six pack

A

Rectus Abdominus

45
Q

Where are the O/I of the Rectus Abdominus?

A

O: superior pubis near symphysis
I: Inferior surfaces of costal cartilages & xiphoid Process

46
Q

What is the A of the Rectus Abdominus?

A

Depresses ribs, flexes vertebral column

47
Q

What is the largest & most superficial of the 3 muscles in the Abdominal Wall?

A

External Oblique

48
Q

Where is the O/I of the External Oblique?

A

O: external surface of lower 8 ribs (false ribs)
I: linea alba & interior half of illiac crest

49
Q

What is the action of the External Oblique?

A

compress abdomiopelvic cavity. flexes & rotates vertebral column

50
Q

Which muscle lies immediatly under external oblique?

A

Internal Oblique

51
Q

Where is the O/I of the Internal Oblique?

A

O: illiac crest & lumbodorsal ligament
I: linea alba, pubic crest, lower 4 ribs

52
Q

What is the action of the Internal Oblique?

A

Compresses abdominopelvic cavity, flexes & rotates vertebral column

53
Q

What is the innermost muscle of the abdominal wall?

A

Transverse Abdominus

54
Q

What is the action of the Transverse Abdominus?

A

compress abdominal cavity

55
Q

Where is the O/I of the Transverse Abdominus?

A

O: illiac crest, costal cartilage of lower 6 ribs, thoraco-lumbar fascia
I: linea alba & pubic crest

56
Q

Where is the O/I of the diaphragm?

A

O: xiphoid process, inner surface of lower 6 ribs, lumbar vertebrae
I: central tendon of diaphragm

57
Q

Which muscle keeps our “erect” when standing?

A

erector spinae

58
Q

Which muscles assist with respiration?

A

Diaphragm & External Intercostals

Anatomy (10 decks)

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