Neck OIIA's

Question 1

Origin: Stylohyoid

Answer 1

Base of styloid process of temporal bone

Question 2

Insertion: Stylohyoid

Answer 2

Greater horns of hyoid

Question 3

Innervation: Stylohyoid

Answer 3

Facial nerve (CN7)

Question 4

Action: Stylohyoid

Answer 4

Pulls the hyoid bone posterosuperiorly during swallowing

Question 5

Origin: Digastric

Answer 5

-Anterior belly: digastric fossa
-Posterior belly: mastoid process of temporal bone

Question 6

Insertion: Digastric

Answer 6

Tendon between two bellies to the body of the hyoid

Question 7

Innervation: Digastric

Answer 7

Mylohyoid nerve

Question 8

Action: Digastric

Answer 8

Elevates the hyoid bone & depresses the mandible

Question 9

Origin: Mylohyoid

Answer 9

Mylohyoid line on mandible

Question 10

Insertion: Mylohyoid

Answer 10

Body of hyoid

Question 11

Innervation: Mylohyoid

Answer 11

Mylohyoid nerve

Question 12

Action: Mylohyoid

Answer 12

Support and elevation of floor of mouth; elevation of hyoid

Question 13

Origin: Geniohyoid

Answer 13

Inferior mental spine

Question 14

Insertion: Geniohyoid

Answer 14

Body of hyoid

Question 15

Innervation: Geniohyoid

Answer 15

Anterior ramus from C1

Question 16

Action: Geniohyoid

Answer 16

Fixation of mandible; pulls mandible inward

Question 17

Origin: Sternohyoid

Answer 17

Posterior aspect of sternoclavicular joint

Question 18

Insertion: Sternohyoid

Answer 18

Body of hyoid

Question 19

Innervation: Sternohyoid

Answer 19

Ansa cervicalis

Question 20

Action: Sternohyoid

Answer 20

Depresses hyoid bone after swallowing

Question 21

Origin: Omohyoid

Answer 21

Superior border of scapula

Question 22

Insertion: Omohyoid

Answer 22

Body of hyoid

Question 23

Innervation: Omohyoid

Answer 23

Anterior rami of C1 to C3

Question 24

Action: Omohyoid

Answer 24

Depresses hyoid bone

Question 25

Origin: Thyrohyoid

Answer 25

Thyroid cartilage

Question 26

Insertion: Thyrohyoid

Answer 26

Greater horn of hyoid

Question 27

Innervation: Thyrohyoid

Answer 27

Anterior ramus of C1

Question 28

Action: Thyrohyoid

Answer 28

Depresses the hyoid bone and elevates the thyroid cartilage

Question 29

Origin: Sternothyroid

Answer 29

Manubrium

Question 30

Insertion: Sternothyroid

Answer 30

Oblique line on lamina of thyroid cartilage

Question 31

Innervation: Sternothyroid

Answer 31

Ansa cervicalis

Question 32

Action: Sternothyroid

Answer 32

Draws larynx (thyroid cartilage) downward

Question 33

Origin: Platysma

Answer 33

Infra & supraclavicular regions

Question 34

Insertion: Platysma

Answer 34

Base of mandible; skin of cheek & angle of mouth

Question 35

Innervation: Platysma

Answer 35

Facial nerve

Question 36

Action: Platysma

Answer 36

Draws corners of mouth downward & protects the major superficial vessels of the neck

Question 37

Origin: Sternocleidomastoid

Answer 37

-Sternal head: manubrium -Clavicular head: medial 1/3 of clavicle

Question 38

Insertion: Sternocleidomastoid

Answer 38

Mastoid process

Question 39

Innervation: Sternocleidomastoid

Answer 39

Accessory nerve

Question 40

Action: Sternocleidomastoid

Answer 40

-Flexing the head and neck laterally -Rotates the head to the opposite site

Question 41

Origin: Splenius capitis

Answer 41

Spinous processes of C7-T3 & ligamentum nuchae

Question 42

Insertion: Splenius capitis

Answer 42

Mastoid process

Question 43

Innervation: Splenius capitis

Answer 43

Posterior rami of C1-C6

Question 44

Action: Splenius capitis

Answer 44

-Ipsilateral rotation of the head -Extension & lateral flexion of spine & head

Question 45

Origin: Posterior scalene

Answer 45

Posterior tubercles of transverse processes of vertebrae C5-C7

Question 46

Insertion: Posterior scalene

Answer 46

Lateral surface of 2nd rib

Question 47

Innervation: Posterior scalene

Answer 47

Anterior rami of C6-C8

Question 48

Action: Posterior scalene

Answer 48

Elevation of 2nd rib and lateral flexion

Question 49

Origin: Middle scalene

Answer 49

Posterior tubercles of the transverse process of vertebrae C2-C7

Question 50

Insertion: Middle scalene

Answer 50

Upper surface of 1st rib

Question 51

Innervation: Middle scalene

Answer 51

Anterior rami of C3-C8

Question 52

Action: Middle scalene

Answer 52

Elevation of rib 1

Question 53

Origin: Anterior scalene

Answer 53

Anterior tubercles of transverse processes of vertebrae C3-C6

Question 54

Insertion: Anterior scalene

Answer 54

Scalene tubercle on the 1st rib

Question 55

Innervation: Anterior scalene

Answer 55

Anterior rami of C4 to C6

Question 56

Action: Anterior scalene

Answer 56

Elevation of rib 1