Muscles Midterm

Question 1

What is the O, I and N of the Sternohyoid muscle?

Answer 1

O: Manubrium
I: Hyoid bone
N: Ansa Cervicalis (C1-C3)
(10)

Question 2

What is the O, I and N of the Sternohthyroid muscle?

Answer 2

O: Manubrium
I: Thyroid cartilage
N: Ansa Cervicalis (C1-C3)

Question 3

What is the O, I and N of the Omohyoid muscle?

Answer 3

Inferior Belly; O: Scapula I: Tendinous “sling” on clavicle
Superior Belly; O: “sling” on clavicle I: Hyoid bone
Innervation for both = Ansa Cervicalis (C1-C3)
(10)

Question 4

What is the O, I and N of the Thyrohyoid muscle?

Answer 4

O: Thyroid cartilage
I: Greater Cornu of hyoid bone
N: C1 (hitch-hike w/ XII)

Question 5

What is the O, I and N of the Digastric muscle?

Answer 5

Ant. belly; O: mandible I: Intermediate tendon held by tendinous sling to hyoid N: V n.
Post. belly; O: Mastoid process I: (same) N: VII n.

Question 6

What is the O, I and N of the Stylohyoid muscle?

Answer 6

O: Styloid process
I: Hyoid bone
N: VII n.

Question 7

What is the O, I and N of the Mylohyoid muscle?

Answer 7

O: Mandible
I: Median raphe and hyoid
N: V n.

Question 8

What is the O, I and N of the Geniohyoid muscle?

Answer 8

O: Mandible
I: Hyoid
N: C1 (via XII)

Question 9

What is the O, I and N of the Anterior Scalene muscle?

Answer 9

O: Ant. tubercles of TP’s
I: First rib (anteriorly)
N: Lover cervical ventral rami

Question 10

What is the O, I and N of the Middle Sclane muscle?

Answer 10

O: TP’s
I: First rib (laterally)
N: Lower cervical ventral ramii

Question 11

What is the O, I and N of the Posterior Scalene muscle?

Answer 11

O: TP’s
I: Second rib (laterally)
N: Lower cervical ventral rami

Question 12

What is the O, I and N of the Scalenous minimis muscle?

Answer 12

O: TP of C6 or C7
I: First rib
N: Lower cervical ventral rami

Question 13

What is the O, I and N of the Longus Colli muscle?

Answer 13

O: TP’s and bodies
I: TP’s and bodies
N: C2-C7 ventral rami

Question 14

What is the O, I and N of the Longus Capitis muscle?

Answer 14

O: TP’s C3-C6
I: Occiput
N: C1-C3 ventral rami

Question 15

What is the O, I and N of the Rectus Capitus Anterior muscle?

Answer 15

O: TP of C1 and Lateral mass C1
I: Occiput
N: C1-C2

Question 16

What is the O, I and N of the Rectus Capitis Lateralis muscle?

Answer 16

O: TP C1
I: Occiput
N: C1-C2 ventral rami

Question 17

What are all the superficial muscles of the face innervated by?

Answer 17

Facial nerve VII

Question 18

Which muscles elevate and wrinkle skin of forehead and elevate eyebrows?

Answer 18

Epicranius muscles
1) Frontalis
2) Occipitalis
(24)

Question 19

Which muscles is considered the blink muscle?

Answer 19

Orbicularis Oculi

Question 20

Which muscle is responsible for pursing the lips?

Answer 20

Orbicularis Oris

24

Question 21

Which muscle is responsible for retracting the angle of the mouth? (smile muscle)

Answer 21

Risorius

24

Question 22

Which muscle is responsible for elevating the angle of the mouth?

Answer 22

Zygomaticus major

24

Question 23

Which muscle is responsible for elevating the upper lip?

Answer 23

Zygomaticus Minor

24

Question 24

Which muscle is responsible for depressing the angle of the mouth?

Answer 24

Depressor Anguli Oris

25

Question 25

Which muscle is responsible for depressing the lower lip?

Answer 25

Depressor Labii Oris

Question 26

Which muscle is responsible for compressing cheek against teeth and gums?

Answer 26

Buccinator

25

Question 27

Which muscle is responsible for depressing the lower lip along midline? (pouting muscle)

Answer 27

Mentalis muscle

25