anterior neck and Muscles

Question 0

platysma insertion

Answer 0

fascia covering parts of pectoralis major and deltoid muscles

Question 1

platysma orgin

Answer 1

inferior border of mandible, skin and subcutaneous tissues over over lower face

Question 2

platysma innervation

Answer 2

cervical branch of facial nerve ( CN VII)

Question 3

platysma action

Answer 3

draws corners of mouth inferiorly and widens as it expresses sadness and fright

Question 4

sternocleidomastoid orgin

Answer 4

lateral surface of mastoid process of temporal bone and lateral half of inferior nuchal line

Question 5

sternocleidomastoid insertion

Answer 5

Sternal Head: anterior surface of manubrium of sternum

Clavicular head: superior surface of medial 3rd clavicle

Question 6

sternocleidomastoid innervation

Answer 6

spinal accessory nerve ( CN XI; motor) C2, C3 nerves (pain/proprioception)

Question 7

sternocleidomastoid action

Answer 7

Unilateral contraction: tilts head same side laterally flexes and turns face superiorly and upward toward opposite side
Bilateral contraction: 1 extends neck at atlanto occipital joints (chin down) 2 flexes cervical vertebrae 3 extends superior cervical vertebrae

Question 8

Mylohyoid orgin

Answer 8

Mylohyoid line of mandible

Question 9

Mylohyoid insertion

Answer 9

Mylohyoid raphe and body of hyoid

Question 10

Mylohyoid innervation

Answer 10

nerve to Mylohyoid branch of inferior aveolar nerve ( from madibular nerve CN V3

Question 11

Mylohyoid action

Answer 11

elevates hyoid , floor of mouth and tongue during swallowing

Question 12

Geniohyoid orgin

Answer 12

inferior mental spine of mandible

Question 13

Geniohyoid insertion

Answer 13

body of hyoid

Question 14

Geniohyoid innervation

Answer 14

C1 via hypoglossal nerve (CN XIII)

Question 15

Geniohyoid action

Answer 15

Pulls hyoid anterosuperiorly; shortens floor of mouth

Question 16

styloid hyoid orgin

Answer 16

styloid process of temporal bone

Question 17

styloid hyoid insertion

Answer 17

body of hyoid

Question 18

styloidhyoid innervation

Answer 18

styloid branch of facial nerve (CN VII)

Question 19

styloid hyoid action

Answer 19

elevates and retracts hyoid, thus elongating floor of mouth

Question 20

digastric orgin

Answer 20

Anterior belly: digastric fossa of mandible

Posterior Belly: mastoid notch of temporal bone

Question 21

digastric insertion

Answer 21

intermediate tendon to body and greater horn of hyoid

Question 22

digastric innervation

Answer 22

Anterior belly: nerve to mylohyoid branch of inferior aveolar nerve

Posterior belly: gastric branch of fascial nerve (CN VII)

Question 23

digastric action

Answer 23

working with infrahyoid muscles depresses mandible against resistance : elevates and steadies hyoid during swallowing

Question 24

sternohyoid orgin

Answer 24

manubrium of sternum and medial end of clavicle

Question 25

sternohyoid insertion

Answer 25

body of hyoid

Question 26

sternohyoid innervation

Answer 26

C1-C3 by branchs of ansa cervicalis

Question 27

sternohyoid action

Answer 27

depresses hyoid after elevation during swallowing

Question 28

omohyoid orgin

Answer 28

superior border of scapula near supra scapular notch

Question 29

omohyoid insertion

Answer 29

inferior border of hyoid

Question 30

omohyoid innervation

Answer 30

C1-C3 by branchs of ansa cervicalis

Question 31

omohyoid action

Answer 31

depresses retracts and steadies hyoid

Question 32

sternothyroid orgin

Answer 32

posterior surface of manubrium of sternum

Question 33

sternothyroid insertion

Answer 33

oblique line of thyroid cartilage

Question 34

sternothyroid innervation

Answer 34

C2, C3 by branch if ansa cervicalis

Question 35

sternothyroid action

Answer 35

depresses hyoid and larynx

Question 36

thyrohyoid orgin

Answer 36

oblique line of thyroid cartilage

Question 37

thyrohyoid insertion

Answer 37

inferior border of body and greater horn of hyoid

Question 38

thyrohyoid innervation

Answer 38

C1 via Hypoglossal nerve

Question 39

thyrohyoid action

Answer 39

depresses hyoid and elevates laynx

Question 40

Buccinator ( cheek muscle) orgin

Answer 40

Mandible , aveolar process of maxilla and mandible,

Question 41

Buccinator insertion

Answer 41

angle of mouth Imodiolus); orbicularis oris

Question 42

Buccinator action

Answer 42

presses teeth against molar teeth, works with tongue to keep food between occlusal surfaces and out of oral vestibule

Question 43

temporalis orgin

Answer 43

floor of temporal fossa and deep surface of temporalis fascia

Question 44

temporalis insertion

Answer 44

tip and medial surface of coronoid process and anterior border of ramus of mandible

Question 45

temporalis innervation

Answer 45

anterior trunk of mandibular nerve (CN V3) via deep temporal nerves

Question 46

temporalis action

Answer 46

elevates mandible closing jaw retractors of mandible

Question 47

masseter orgin

Answer 47

inferior border and medial surface of maxillary process of zygomatic bone and zygomatic arch

Question 48

masseter insertion

Answer 48

angle and lateral surface of ramus of mandible

Question 49

masseter innervation

Answer 49

anterior trunk of mandibular nerve (CN V3) via masseteric nerve

Question 50

masseter action

Answer 50

elevates mandible

Question 51

orbicularis oculi orgin

Answer 51

medial orbital margin medial palpebral ligament, lacrimal bone

Question 52

orbicularis oculi insertion

Answer 52

skin around major orbital , superior and inferior tarsi

Question 53

orbicularis oculi action

Answer 53

closes eye lids

Question 54

orbicularis oris orgin

Answer 54

medial maxilla and mandible

Question 55

orbicularis oris insertion

Answer 55

mucous membrane of lips

Question 56

orbicularis oris action

Answer 56

tonus closes mouth compresses protrudes lips