Muscles- Head And Neck

Question 1

Zygomaticus minor

Answer 1

Action: retracts and elevates upper lip
Origin: zygomatic bone
Insertion: upper lip

Question 2

Epicranial aponeurosis

Answer 2

Action: wrinkles forehead, raises eyebrows

Question 3

Platysma

Answer 3

Action: tenses skin of neck, depresses mandible
Origin: thorax behind cartilage of second rib and scapula
Insertion: mandible, skin of cheek

Question 4

Anterior scalene

Answer 4

Action: flex on of cervical spine
Origin: vertebrae c3-c6
Insertion: scalene tubercle, cranial crest of first rib

Question 5

Buccinator

Answer 5

(Under masseter)
Action: compresses cheeks
Origin: maxilla and mandible
Insertion: orbicularis Oris

Question 6

Depressor labii inferiors

Answer 6

Action: depresses lower lip
Origin: mandible
Insertion: skin of lower lip

Question 7

Levator labii superioris

Answer 7

Action:elevates upper lip
Origin: orbit of eye
Insertion: orbicularis Oris

Question 8

Mentalis

Answer 8

Action: elevates and protrudes lower lip
Origin: mandible
Insertion: skin of chin

Question 9

Orbicularis Oris

Answer 9

Action: compresses, purses lips
Origin: maxilla and mandible
Insertion: lips

Question 10

Risorius

Answer 10

Action: draws corner of mouth to the side
Origin: fascia surrounding parotid salivary gland
Insertion: angle of mouth

Question 11

Occipitofrontalis

Answer 11

Action: raises eyebrows my wrinkles forehead
Origin: epicranial aponeurosis
Insertion: skin of eyebrows, bridge of nose

Question 12

Orbicularis oculi

Answer 12

Action: closes eye
Origin: orbit
Insertion: Skin around eyelid

Question 13

Corrugator supercilli

Answer 13

Action: pulls skin inferiorly and anteriorly, wrinkles brow
Origin: orbital rim
Insertion: eyebrow

Question 14

*temporalis

Answer 14

*know for cat
Action: elevates mandible
Origin: temporal lines of skull
Insertion: mandible

Question 15

*masseter

Answer 15

*know for cat
Action: Elevates mandible, closes jaws
Origin: zygomatic arch
Insertion: mandible

Question 16

Superior oblique

Answer 16

Action: eye rolls, looks down, laterally
Origin: sphenoid around optic canal
Insertion: superior, lateral surface of eyeball

Question 17

Inferior oblique

Answer 17

Action: eye rolls, looks up, laterally
Origin: maxilla at anterior portion of orbit
Insertion: inferior, lateral surface of eyeball

Question 18

Lateral rectus

Answer 18

Action: eye looks lateral
Origin: sphenoid around optic canal
Insertion: lateral surface of eyeball

Question 19

Superior rectus

Answer 19

Action: eye looksup
Origin: sphenoid around optic canal
Insertion: superior surface of eyeball

Question 20

Medial rectus

Answer 20

Action: eye looks medially
Origin: sphenoid around optic canal
Insertion: medial surface of eyeball

Question 21

Inferior rectus

Answer 21

Action: eye looks down
Origin: sphenoid around optic canal
Insertion: inferior, medial surface of eyeball

Question 22

Sternocleidomastoid

Answer 22

Action: flex neck, bends head towards shoulder, turns face to opposite side
Origin: clavicle, manubrium
Insertion: mastoid of skull, superior nuchal line

Question 23

Thyrohyoid

Answer 23

Action: elevates thyroid, depresses hyoid bone
Origin: thyroid cartilage of larynx
Insertion: hyoid bone

Question 24

Stylohyoid

Answer 24

Style hyoid: action: elevates larynx
Origin: stylized process of temporal bone
Insertion: hyoid bone

Question 25

Sternohyoid

Answer 25

Action: depresses hyoid bone and larynx
Origin: dorsal surface of manubrium and first costal cartilage
Insertion: thyroid cartilage of larynx

Question 26

Sternohyoid

Answer 26

Action: depresses hyoid bone and larynx
Origin: clavicle and manubrium
Insertion: hyoid bone

Question 27

Omohyoid

Answer 27

Action: depresses hyoid bone and larynx
Origin: superior border of scapula
Insertion: hyoid bone

Question 28

*mylohyoid

Answer 28

*know for cat
Action: elevates floor of mouth and hyoid bone, depresses mandible
Origin: mylohyoid line of mandible
Insertion: median connective tissue brand, runs to hyoid bone

Question 29

Geniohyoid

Answer 29

Action: depresses mandible Or elevates larynx, pulls hyoid bone anteriorly
Origin: median surface if mandible
Insertion: hyoid bone

Question 30

*digastric

Answer 30

*know for cat
Action: depresses mandible or elevates larynx
Origin: mandible, mastoid
Insertion: hyoid bone

Question 31

Styloglossus

Answer 31

Action: retracts tongue, elevates side
Origin: sty loud process of temporal bone
Insertion: tip and base of tongue

Question 32

Palatoglossus

Answer 32

Action: elevates tongue, depresses soft palate
Origin: soft palate
Insertion: side of tongue

Question 33

Hyoglossus

Answer 33

Action: depresses and retracts tongue
Origin: hyoid bone
Insertion:side of tongue

Question 34

Genioglossus

Answer 34

Action: depresses and protracted tongue
Origin: mandible
Insertion: body of tongue, hyoid bone

Question 35

Lateral pterygoid

Answer 35

Action: depresses and protects mandible to open mouth
Origin: sphenoid bone
Insertion: mandible, temporomandibular joint

Question 36

Medial pterygoid

Answer 36

Action: elevates mandible
Origin: lateral pterygoid plate
Insertion: mandible

Question 37

Middle scalene

Answer 37

Action: elevation 1st rib, rotator, flexion
Origin: vertebrae c2-c7
Insertion: 1st rib

Question 38

*multifundus

Answer 38

Action: extension, rotation
Origin: sacrum, iliac crest
Insertion: spinous process

Question 39

Posterior scalene

Answer 39

Action: elevation 1st and 2nd ribs
Origin: cervical vertebrae c2-c7
Insertion: 1st and 2nd ribs

Question 40

Quadratus lumborum

Answer 40

Actions: flexion if vertebral column, depression of thoracic rib cage
Origin: iliac crest, iliolumbar ligament
Insertion: last rib, lumbar vertebrae

Question 41

Zygomaticus major

Answer 41

Action: elevates and retracts courier of mouth
Origin: zygomatic bone
Insertion: angle of mouth