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AP1 Block 4 > Excel Spreadsheet Muscles > Flashcards

Excel Spreadsheet Muscles Flashcards

1
Q

MUSCLES THAT MOVE THE MANDIBLE

A

Masseter
Temporalis
Lateral Pterygoid
Medial Pterygoid

all innervated by trigeminal

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2
Q

Masseter

A

elevates the mandible (biting)

innervated by trigeminal

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3
Q

Temporalis

A

retracts the mandible and assist with elevating the mandible (biting)

innervated by trigeminal

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4
Q

Lateral Pterygoid

A

protracts and depresses the mandible (opens the jaw)

innervated by trigeminal

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5
Q

Medial Pterygoid

A

protracts and elevates the mandible (closes the jaw)

innervated by trigeminal

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6
Q

MUSCLES THAT MOVE THE TONGUE

A

Genioglossus
Styloglossus
Palatoglossus
Hyoglossus

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7
Q

Occipitofrontalis

A

Origin: “Occipital belly: occipital bone
Frontal belly: galea aponeurotica”

INS: “Occipital belly: galea aponeurotica
Frontal belly: fascia and skin superior to eye and nose”

overall, elevates (raises) eyebrows and wrinkles skin of forehead horizontally as in look of surprise

facial nerve (CN VII): temporal branch

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8
Q

Zygomaticus major

A

Origin: zygomatic bone

INS: skin at angle of mouth and orbicularis oris

draws angle of mouth superiorly and laterally, as in smiling

facial nerve (CN VII): zygomatic branch and buccal branch

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9
Q

Zygomaticus minor

A

Origin: zygomatic bone

Insertion: upper lip

raises (elevates) upper lip, exposing maxillary teeth

facial nerve (CN VII): zygomatic branch and buccal branch

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10
Q

Levator labii superioris

A

Origin: n/a

Insertion: skin at angle of mouth and orbicularis oris

raises (elevates) upper lip

facial nerve (CN VII): zygomatic branch

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11
Q

Depressor labii inferioris

A

Origin: n/a

Insertion: skin of lower lip

depresses (lowers) lower lip

facial nerve (CN VII): marginal mandibular branch

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12
Q

Depressor anguli oris

A

Insertion: n/a

Origin: angle of the mouth

draws angle of mouth laterally and inferiorly

facial nerve (CN VII): marginal mandibular branch

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13
Q

Orbicularis oris

A

Origin: muscle fibers surrounding the opening of the mouth

Insertion: skin at the corner of the mouth

closes and protrudes the lips; compresses lips against teeth; shapes lips during speech

facial nerve (CN VII): buccal branch

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14
Q

Buccinator

A

Origin: n/a

Insertion: orbicularis oris

presses cheeks against teeth and lips, as in whistling, blowing, sucking; draws corner of mouth laterally; assists in mastication (chewing) by keeping food between the teeth

facial nerve (CN VII): buccal branch

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15
Q

Risorius

A

Origin: N/A

Insertion: skin at the angle of the mouth

draws angle of the mouth laterally, as in grimacing

facial nerve (CN VII): buccal branch

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16
Q

Mentalis

A

Origin: n/a

Insertion: skin of chin

elevates and protrudes the lower lip and pulls up skin of chin, as in pouting

facial nerve (CN VII): marginal mandibular branch

17
Q

Platysma (muscle of neck and facial expression)

A

Origin: n/a

Insertion: mandible, muscle around angle of mouth, and skin of lower face

draws outer part of lower lip inferiorly and posteriorly as in pouting; depresses mandible

facial nerve (CN VII): cervical branch

18
Q

Orbicularis oculi

A

Origin: n/a

Insertion: circular path around orbit

closes and squints eye (orbital part), depresses upper eyelid and elevates lower eyelid

facial nerve (CN VII): temporal branch and zygomatic branch

19
Q

Corrugator supercilii

A

Origin: n/a

Insertion: skin of eyebrow

draws eyebrow inferiorly and medially, wrinkles skin of forehead vertically as in frowning

facial nerve (CN VII): temporal branch

20
Q

Sternocleidomastoid muscle

A

Origin: sternum and clavicle

Insertion: mastoid process of the temporal bone

“contraction of both flexes the cervical vertebrae & extends head (thrust chin forward, keeping head level)
contraction of one, laterally flexes the neck and rotates face in opposite direction”

cranial nerve XI (spinal accessory)

21
Q

Trapezius

A

cranial nerve XI (spinal accessory)

22
Q

Rectus capitis posterior, both major and minor

A

mainly postural muscles, causing some combination of flexion, extension, lateral bending, and/or rotation at the atlanto-occipital and atlanto-axial joints

23
Q

Obliquus capitis, both inferior and superior

A

mainly postural muscles, causing some combination of flexion, extension, lateral bending, and/or rotation at the atlanto-occipital and atlanto-axial joints

24
Q

Suprahyoid muscles?

A

Digastric
Stylohyoid
Mylohyoid
Geniohyoid

25
Q

Digastric
Stylohyoid
Mylohyoid
Geniohyoid

A

Suprahyoid muscles that elevate the hyoid bone, floor of the oral cavity, and tongue during swallowing

26
Q

Infrahyoid muscles

A

Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid

27
Q

Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid

A

infrahyoid muscles depress the hyoid bone, and some move the larynx during swallowing and speech

28
Q

Scalenes

A

Origin: Attach cervical vertebrae to uppermost ribs

Inisertion: Attach cervical vertebrae to uppermost ribs

Flex, laterally flex & rotate the head Participate in forced inspiration

cervical spinal nerves C3 – C8

29
Q

External intercostal muscles

A

Origin: inferior border of rib above (travels obliquely-from lateral to medial)

Insertion: superior border of the rib below (travels obliquely-from lateral to medial)

Elevates the rib cage (muscle of inspiration)

30
Q

Internal intercostal muscles

A

Origin: superior border of a rib below (fibers angle up and in at right angle to external intercostals)

Insertion: inferior border of the rib above (fibers angle up and in at right angle to external intercostals)

Action: Depress the rib cage, which is important in forced expiration

31
Q

Transverse thoracic muscles

A

Origin: sternum

Insertion: cartilages of ribs 2 - 6

Depresses the ribs

32
Q

Subcostal muscles

A

Origin: bridge two intercostal spaces

probably elevate the ribs, making them muscles of inspiration

33
Q

Innermost intercostal muscles

A

Origin: bridge an intercostal space

probably muscles of expiration

AP1 Block 4 (5 decks)

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