Chapter 4

Question 0

_____________= other end that is attached to the more movable part

Answer 0

Insertion

Question 1

_____________=end of muscle that is attached to the least movable structure

Answer 1

Origin

Question 2

________________= the movement accomplished when muscle fibers contract

Answer 2

Action

Question 3

Cervical muscles are in the _____________

Answer 3

Neck

Question 4

The muscles of the head and neck are divided into ___ main groups

Answer 4

7

Question 5

Name the 7 groups of muscles in the head and neck

Answer 5

Cervical
Facial expression
Mastication
Hyoid 
Tongue 
Soft palate 
Pharynx

Question 6

One of the largest and most superficial cervical muscles is the paired _________________________ muscle

Answer 6

Sternocleidomastoid muscle

Question 7

Sternocleidomastoid originates from where?

Answer 7

Medial portion of clavicle & sternum (superior and lateral surfaces)

Question 8

What is the action of the sternocleidimastoid (SCM)?

Answer 8

If 1 muscle contracts, the head and neck bend to the same side & the face and front of the neck rotate to the opposite side.

Question 9

The SCM is innervated by the ______________________

Answer 9

11th cranial nerve (Accessory nerve)

Question 10

Paired muscle which covers the lateral & posterior surfaces of the neck

Answer 10

Trapezius muscle

Question 11

SCM inserts where?

Answer 11

Mastoid process

Question 12

The trapezius muscle originates from where?

Answer 12

Occipital bone & posterior midline of the cervical and thoracic regions

Question 13

The trapezius muscle inserts where?

Answer 13

Clavicle & scapula

Question 14

What is the action of the trapezius muscle?

Answer 14

Lift the clavicle and scapula (shrug your shoulders)

Question 15

Trapezius muscle is innervated by the ____________________

Answer 15

11th cranial nerve (accessory nerve)

Question 16

Muscles of facial expression all originate from bone or fascia and insert on the ___________

Answer 16

Skin

Question 17

All muscles of facial expression are innervated by the ____________________

Answer 17

7th cranial nerve (Facial nerve)

Question 18

Paired muscles in the superficial fascia of the facial tissues= _______________________

Answer 18

Muscles of facial expression

Question 19

_____ muscles to smile

_____ muscles to frown

Answer 19

17

43

Question 20

The muscles of facial expression are situated in the ___________________________

Answer 20

Scalp, eye, or mouth region

Question 21

__________________ is a muscle of facial expression located in the scalp region

Answer 21

Epicranial muscle

Question 22

The epicranial muscle raises the _________________________

Answer 22

Eyebrows & scalp (when person shows surprise)

Question 23

_________________________ is a muscle of facial expression that encircles the eye

Answer 23

Orbicularis oculi muscle

Question 24

Orbicularis oculi muscle originates from where?

Answer 24

Orbital rim, nasal process of frontal bone, & frontal process of the maxilla

Question 25

Orbicularis oculi inserts where?

Answer 25

Lateral region of the eye

Question 26

What is the action of the orbicularis oculi muscle?

Answer 26

Closes the eyelid

Question 27

__________________ is a muscle of facial expression in the eye region, deep to the superior portion of the orbicularis oculi muscle

Answer 27

Corrugator supercilii muscle

Question 28

Corrugator Supercilii Muscle Origin Insertion Action

Answer 28

Origin- frontal bone Insertion- skin tissue of eyebrow Action-draws skin tissue of the eyebrow medially & inferiorly toward the nose (causing wrinkles)

Question 29

______________is an important muscle of facial expression in the mouth region

Answer 29

Orbicularis oris muscle

Question 30

Orbicularis Oris Muscle Origin Insertion Action

Answer 30

Origin- encircles mouth Insertion- skin tissue @ angle of mouth Action- close lips, pursing lips, grimacing, and pouting/kissing

Question 31

_______________________ is a muscle of facial expression that fiend the anterior portion of the cheek or lateral wall of the oral cavity

Answer 31

Buccinator Muscle

Question 32

Buccinator Muscle Origin Insertion Action

Answer 32

Origin- maxilla, mand, & pterygomandibular raphe Insertion- angle of mouth Action- chewing

Question 33

__________________ is a thin muscle of facial expression in the mouth region

Answer 33

Risorius Muscle

Question 34

Risorius Muscle Origin Insertion Action

Answer 34

Origin- fascia superficial to masseter muscle Insertion- angle of mouth Action- stretch lips laterally

Question 35

A broad, flat muscle of facial expression in the mouth region is?

Answer 35

Levator labii superioris

Question 36

Levator labii superioris originates from the infraorbital rim of the maxilla and inserts where?

Answer 36

Skin tissue of upper lip (it elevates the upper lip)