4: Suprahyoid And Infrahyoid Muscles

Question 1

Five suprahyoid muscles

Answer 1

1. Digastric
2. Geniohyoid
3. Mylohyoid
4. Stylohyoid
5. Hyoglossal

Question 2

Five infrahyoid muscles

Answer 2

1. Sternohyoid
2. Sternothyroid
3. Thyrohyoid
4. Omohyoid
5. Cricothyroid

Question 3

Digastric O and I (anterior and posterior bellies)

Answer 3

Anterior belly: digastric fossa of mandible -> intermediate tendon onto body of hyoid
Posterior belly: medial mastoid process -> intermediate tendon

Question 4

Digastric A

Answer 4

Elevates hyoid, depresses mandible, steadies hyoid during swallowing and speaking

Question 5

Digastric N

Answer 5

Anterior belly: N to mylohyoid (from CN V)

Posterior rlly: CN VII

Question 6

Sling for digastric

Answer 6

Made of investing fascia, allows digastric to slide

Question 7

Geniohyoid in relation to mylohyoid

Answer 7

Geniohyoid is superior

Question 8

Geniohyoid O and I

Answer 8

O; inferior mental spine of mandible

I: hyoid

Question 9

Geniohyoid A

Answer 9

Draws hyoid anterior during swallowing, opens mandible, shortens floor of mouth

Question 10

Geniohyoid N

Answer 10

Ventral rami C1 (via hypoglossal N)

Question 11

Mylohyoid O and I

Answer 11

O: mylohyoid line on inner mandible
I: body of hyoid via median tenon (mylohyoid raphe)

Question 12

Mylohyoid A

Answer 12

Tightens and elevates oral floor, draws hyoid bone forward during swallowing, assists in opening mandible, supports tongue

Question 13

Mylohyoid N

Answer 13

N to mylohyoid

Question 14

Stylohyoid O and I

Answer 14

O: styloid process
I: hyoid via split tendon around posterior digastric

Question 15

Stylohyoid A

Answer 15

Elevates hyoid during swallowing, assists in opening mandible

Question 16

Stylohyoid N

Answer 16

Facial N

Question 17

Hyoglossal O and I

Answer 17

O: hyoid
I: lateral tongue

Question 18

Hypoglossal A

Answer 18

Depresses tongue, shortens it

Question 19

Hyoglossal N

Answer 19

CN 12

Question 20

Sternohyoid O and I

Answer 20

O: posterior manubrium, sternoclavicular joint
I: hyoid

Question 21

Sternohyoid A

Answer 21

Depresses hyoid fixes hyoid, depresses larynx and hyoid

Question 22

Sternohyoid N

Answer 22

Ansa cervicalis, C4

Question 23

Three muscles that assist in phonation and late phase swallowing

Answer 23

1. Sternohyoid
2. Sternothyroid
3. Omohyoid

Question 24

Which muscle covers the lateral lobe of the thyroid

Answer 24

Sternothyroid

Question 25

Sternothyroid O and I

Answer 25

O: posterior manubrium I: oblique line of thyroid cartilage

Question 26

Sternothyroid A

Answer 26

Depresses larynx, hyoid and thyroid cartilage

Question 27

Sternothyroid N

Answer 27

Ansa cervicalis, C4

Question 28

Thyrohyoid O and I

Answer 28

O: olblique line of thyroid cartilage I: greater horn and body of hyoid

Question 29

Thryohyoid A

Answer 29

Depresses and fixes hyoid, raises larynx during swallowing

Question 30

Thyrohyoid N

Answer 30

Ventral ramus C1, C4

Question 31

Omohyoid O and I (two bellies)

Answer 31

Inferior belly: superior scapula -> intermediate tendon | Superior belly: intermediate tenon -> lower hyoid

Question 32

Omohyoid A

Answer 32

Depresses hyoid, draws larynx and hyoid down, tenses cervical fascia with intermediate tendon, maintains latency of IJV

Question 33

Omohyoid N

Answer 33

Ansa cervicalis, C4

Question 34

Omohyoid fascial sling

Answer 34

Connects it to clavicle

Question 35

Cricothyroid O and I

Answer 35

O: cricoid cartilage I: thyroid cartilage

Question 36

Cricothyroid A

Answer 36

Focalization

Question 37

Cricothyroid N

Answer 37

External laryngeal N (from CN X)