Muscles Of Anterior Neck And Throat

Question 0

Insertion of digastric

Answer 0

By a connective tissue loop to hyoid bone

Question 1

Origin of digastric

Answer 1

Lower margin of mandible (anterior belly) and mastoid process of the temporal bone (posterior belly)

Question 2

Action of digastric

Answer 2

Open mouth and depress mandible

Question 3

Innervation of digastric

Answer 3

Mandibular branch of trigeminal nerve for anterior belly and facial nerve for posterior belly

Question 4

Origin of stylohyoid

Answer 4

Styloid process of temporal bone

Question 5

Insertion of stylohyoid

Answer 5

Hyoid bone

Question 6

Action of stylohyoid

Answer 6

Elevates and retracts hyoid, swallowing

Question 7

Innervation of stylohyoid

Answer 7

Facial nerve

Question 8

Origin of mylohyoid

Answer 8

Medial surface of mandible

Question 9

Insertion of mylohyoid

Answer 9

Hyoid bone and median raphe

Question 10

Action of mylohyoid

Answer 10

Elevates hyoid bone and floor of mouth, forces food

Question 11

Innervation of mylohyoid

Answer 11

Mandibular branch of trigeminal nerve

Question 12

Origin of geniohyoid

Answer 12

Inner surface of mandibular symphysis

Question 13

Insertion of geniohyoid

Answer 13

Hyoid bone

Question 14

Action of geniohyoid bone

Answer 14

Pulls hyoid bone superiorly and anteriorly, swallowing

Question 15

Innervation of geniohyoid

Answer 15

First cervical spinal nerve via hypoglossal nerve (cranial VII)

Question 16

Origin of sternohyoid

Answer 16

Manubrium and medial end of clavicle

Question 17

Insertion of sternohyoid

Answer 17

Lower margin of hyoid bone

Question 18

Action of sternohyoid

Answer 18

Depresses larynx and hyoid bone if mandible is fixed

Question 19

Innervation of sternohyoid

Answer 19

C1-c3 through ansa cervicalis (slender nerve root in cervical plexus)

Question 20

Origin of sternothyroid

Answer 20

Posterior surface of manubrium of sternum

Question 21

Insertion of sternothyroid

Answer 21

Thyroid cartilage

Question 22

Action of sternothyroid

Answer 22

Pulls larynx and hyoid bone inferiorly

Question 23

Innervation of sternothyroid

Answer 23

C1-c3 through ansa cervicalis (slender nerve root in cervical plexus)

Question 24

Origin of omohyoid

Answer 24

Superior surface of scapula

Question 25

Insertion of omohyoid

Answer 25

Hyoid bone, lower border

Question 26

Action of omohyoid

Answer 26

Depresses and retracts hyoid bone

Question 27

Innervation of omohyoid

Answer 27

C1-c3 through ansa cervicalis (slender nerve root in cervical plexus)

Question 28

Origin of thyrohyoid

Answer 28

Thyroid cartilage

Question 29

Insertion of thyrohyoid

Answer 29

Hyoid bone

Question 30

Action of thyrohyoid

Answer 30

Depresses hyoid bone or elevates larynx if hyoid is fixed

Question 31

Innervation of thyrohyoid

Answer 31

First cervical nerve via hypoglossal

Question 32

Origin of superior, middle, and inferior pharyngeal constrictors

Answer 32

Attached anteriorly to mandible and medial pterygoid plate (superior), hyoid bone (middle), and laryngeal cartilages (inferior)

Question 33

Insertion of the superior, middle,and inferior pharyngeal constrictors

Answer 33

Posterior median raphe of pharynx

Question 34

Action of superior, middle, and inferior pharyngeal constrictors

Answer 34

Constrict pharynx during swallowing

Question 35

Innervation of superior, middle, and inferior pharyngeal constrictors

Answer 35

Pharyngeal plexus [branches of vagus nerve (cranial X)]