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Anatomy and Physiology 1 > Axial Muscles > Flashcards

Axial Muscles Flashcards

Muscle functions/origin and insertions

1
Q

Frontalis

A

Origin: Galea Aponeurotica

Insertion: Skin above nose and eyes

Action: Wrinkles forehead, raises eyebrows.

Nerve: Facial VII

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2
Q

Occipitalis

A

Origin: Superior nuchal lines of the occipital bone

Insertion: Galea aponeurotica

Action: Draws back scalp

Nerve: Facial VII

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3
Q

Procerus

A

Origin: Fascia over nasal bone

Insertion: skin between eyebrows

Action: Draw eyebrows downward

Nerve: Facial VII

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4
Q

Corrugator Supercili

A

Origin: Medial end of superciliary arch

Insertion: skin under the medial end of eyebrows

Action: Draws eyebrows downward and medially

Nerve: Facial VII

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5
Q

Nasalis

A

Origin: maxilla

Insertion: Muscle on opposite side over the bridge of nose

Action: Maintains opening of nose

Nerve: Facial VII

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6
Q

Orbicularis Oculi

A

Origin: medial margin of orbit

Insertion:
O: continuous around orbit
P: Lateral Palpebral Ligament into zygomatic bone
L: lateral palpebral ligament

Action: closes eye

Nerve: Facial VII

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7
Q

Orbicularis Oris

A

Origin: corner of mouth

Insertion: other muscles at angle of mouth

Action: closes and protrudes lips

Nerve: Facial VII

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8
Q

Zygomaticus Major

A

Origin: zygomatic bone

Insertion: Angle of mouth

Action: draws angle of mouth and back

Nerve: Facial VII

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9
Q

Auricularis Anterior

A

Origin: temporal

Insertion: helix of ear

Action: draws ear forward

Nerve: Facial VII

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10
Q

Auricularis Superior

A

Origin: temporal

Insertion: superior part of ear

Action: draws ear upward

Nerve: Facial VII

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11
Q

Auricularis Posterior

A

Origin: mastoid area of temporal bone

Insertion: Posterior part of the ear

Action: draws ear upward

Nerve: VII

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12
Q

Temporalis

A

Origin: superior and inferior temporal lines of parietal bone

Insertion: coronoid process of mandible

Action: Closes lower jaw, clenches teeth

Nerve: Trigeminal V

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13
Q

Masseter

A

Origin: zygomatic arch, zygomatic process of maxilla

Insertion: Ramus of mandible

Action: Closes lower jaw, clenches teeth

Nerve: Trigeminal V

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14
Q

Sternocleidomastoid

A

Origin: sternum

Insertion: Mastoid process of temporal bone

Action: Flexes neck down, rotates head

Nerve: Accessory XI and Cervical

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15
Q

Splenius Capitus

A

Origin: spinous processes of vertebra

Insertion: mastoid process of temporal bone

Action: extends and rotates head

Nerve: cervical

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16
Q

Semispinalis capitis

A

Origin: transverse processes C-4 to T-6

Insertion: Between nuchal lines of occipital bone

Action: extends and rotates head

Nerve: dorsal Spinal

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17
Q

Buccinator

A

Origin: Alveolar process of maxilla and mandible

Insertion: corner of mouth

Action: Compresses cheek

Nerve: Facial VII

18
Q

Risoris

A

Origin: over parotid gland

Insertion: skin at angle of the mouth

Action: retracts angle of mouth, grinning

Nerve: Facial nerve VII

19
Q

Levator Labii Superioris

A

Origin: corner of the eye to side of nose

Insertion: upper lip

Action: raises upper lip

Nerve: VII

20
Q

Levator Labii Superioris (infraorbital head)

A

Origin: infraorbital foramen

insertion: upper lip

Action: raises upper lip

Nerve: VII

21
Q

Levator Labii Superioris (zygomatic head)

A

Origin: zygomatic bone

Insertion: upper lip

Action: raises upper lip

Nerve: facial VII

22
Q

Depressor Labii Inferioris

A

Origin: mandible

Insertion: skin of lower lip

Action: draws lower lip down and laterally

Nerve: facial VII

23
Q

Mentalis

A

Origin: incisive fossa of mandible

Insertion: skin of chin

Action: raises and protrudes lower lip, wrinkles skin of chin.

Nerve: Facial VII

24
Q

Depressor Anguli Oris

A

Origin: oblique line of the mandible

Insertion: Angle of the mouth

Action: depresses angle of mouth, frowning

nerve: fascial VII

25
Q

Platysma

A

Origin: on the connective tissue that covers the muscle of the shoulder

Insertion: Muscles of the chin and jaw, mandible

Action: depresses and draws lower lip laterally, draws up skin of chest.

26
Q

Mylohyoid

A

origin: inner surface of mandible
insertion: body of hyoid bone

Action: elevates hyoid, depresses mandible

Nerve: Trigeminal V

27
Q

Geniohyoid

A

Origin: chin, inner mandible

Insertion: hyoid

Action: elevates hyoid

Nerve: cervical

28
Q

Genioglossus

A

Origin: mandible

Insertion: tongue

Action: sticking out tongue, depression

Nerve: hypoglosses XII

29
Q

Hyoglossus

A

Origin: hyoid bone

Insertion: Tongue

Action: Depresses tongue and draws down on sides

Nerve: hypoglossal XII

30
Q

Stylohyoid

A

Origin: styloid process

Insertion: hyoid bone

Action: raises hyoid

Nerve: Facial VII

31
Q

Styloglossus

A

Origin: styloid process

Insertion: tongue

Action: elevates and pulls back tongue

Nerve: hypoglossal XII

32
Q

Digastric Posterior belly

A

Origin: mastoid process

Insertion: hyoid bone

Action: elevates hyoid, depresses mandible

Nerve: Facial nerve VII

33
Q

Digastric Anterior Belly

A

Origin: middle of mandible

Insertion: hyoid bone

Action: elevates hyoid, depresses mandible

Nerve: Trigeminal V

34
Q

Sternohyoid

A

Origin: sternum

Insertion: body of hyoid

Action: depresses hyoid

Nerve: cervical

35
Q

Sternothyroid

A

Origin: Sternum

Insertion: Thyroid to hyoid

Action: Lowers hyoid

nerve: cervical

36
Q

Thyrohyoid

A

O: thyroid gland

I: hyoid (greater horn)

A: lowers hyoid

N: Cervical

37
Q

Omohyoid

A

O: superior border of scapula

I: hyoid

A: depresses hyoid

N: cervical

38
Q

Anterior Scalenus

A

O: transverse processes C-3 to C-6

I: 1st rib

A: flexes and rotates neck, elevates 1st rib

N: cervical

39
Q

Middle Scalenus

A

O: transverse processes C-2 to C-7

I: 1st rib

A: flexes and rotates neck, elevates 1st rib

N: cervical

40
Q

Posterior Scalenus

A

O: transverse processes C-5 to C-7

I: 2nd rib

A: flexes and rotates neck, elevates 2nd rib

N: cervical

Anatomy and Physiology 1 (2 decks)

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