Anterior Neck Muscles

Question 1

deep anterior cervical muscle layer

Answer 1

longus coli
Rectus capitis anterior
Rectus capitis lateralis

Question 2

intermediate, anterior cervical muscle layer

Answer 2

scalenes
Longus capitis

Question 3

hyoid muscle layer in anterior cervical muscles

Answer 3

Suprahyoid
infrahyoid

Question 4

superficial cervical anterior muscle layer

Answer 4

sternocleidomastoid
Platysma

Question 5

hyoid muscles

Answer 5

steady or move the hyoid and larynx

Question 6

suprahyoid

Answer 6

muscles superior to the hyoid

connects hyoid to cranium

Mylohyoid, Geniohyoid, stylohyoid, Digastric muscles

Question 7

infrahyoid

Answer 7

muscles inferior to the hyoid

connects hyoid to sternum, clavicle and scapula

superficial plane - sternohyoid and omohyoid

Deep plane - sternothyroid and thyrohyoid

Question 8

omohyoid

Answer 8

has two bellies that are united by an intermediate tendon, which is connected to the clavicle by a fascial sling

Important landmark in the neck because it divides the anterior and posterior triangles into smaller triangles

Question 9

digastric muscles

Answer 9

Has two bellies that descend to the hyoid bone

they are joined by an intermediate tendon that is connected to the body in the greater horn of the hyoid bone by a strong loop, or sling of fibrous connective tissue

This fibrous pulley allows the intermediate tendon to slide anteriorly and posteriorly

Question 10

superior attachment for the digastric muscle

Answer 10

Anterior belly- Digastric fossa of mandible
posterior belly- mastoid notch of temporal bone

Question 11

inferior attachment for the digastric muscle

Answer 11

Intermediate tendon to body and greater horn of hyoid bone

Question 12

Innervation of Digastric muscle

Answer 12

anterior belly- mylohyoid nerve branch of inferior alveolar nerve

Posterior belly - facial nerve cranial nerve VII

Question 13

action of Digastric muscle

Answer 13

Depresses mandible and raises hyoid bone

Question 14

Stylohyoid muscle superior attachment

Answer 14

Styloid process of the temporal bone

Question 15

Stylohyoid muscle inferior attachment

Answer 15

Body of the hyoid bone

Question 16

Innervation of the stylohyoid bone

Answer 16

cervical branch of facial nerve (CN VII)

Question 17

Stylohyoid muscle action

Answer 17

Elevates and retracts hyoid bone, elongating the floor of the mouth

Question 18

Mylohyoid muscle superior attachment

Answer 18

Mylohyoid line of the mandible

Question 19

Describe mylohyoid muscle

Answer 19

thin, flat, triangular muscles that form a sling inferior to the tongue

Form the floor of the mouth

Question 20

inferior attachment of the mylohyoid muscle

Answer 20

Median in raphae and body of the hyoid bone

Question 21

innervation of the mylohyoid muscle

Answer 21

Mylohyoid nerve a branch of the inferior alveolar nerve

Question 22

action of the Mylohyoid muscle

Answer 22

Elevates the hyoid bone
floor of the mouth and tongue, during swallowing and speaking

Question 23

Geniohyoid muscles description

Answer 23

short, narrow muscles that contact each other in the median plane

Located superior to the mylohyoid muscles were they reinforce the floor of the mouth

Question 24

attachments for the Geniohyoid muscles

Answer 24

Superior attachment- inferior mental spine of the mandible
Inferior attachment - body of the hyoid bone

Question 25

innervation of the geniohyoid muscles

Answer 25

C1 via the hypoglossal nerve CN XII

Question 26

geniohyoid muscles action

Answer 26

pulls the hyoid bone anterosuperiorly and shortens the floor of the mouth and widens the pharynx