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Head & Neck Anatomy > Chapter 4 > Flashcards

Chapter 4 Flashcards

0
Q

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

A

Insertion

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1
Q

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

A

Origin

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2
Q

________________= the movement accomplished when muscle fibers contract

A

Action

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3
Q

Cervical muscles are in the _____________

A

Neck

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4
Q

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

A

7

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5
Q

Name the 7 groups of muscles in the head and neck

A 
Cervical
Facial expression
Mastication
Hyoid 
Tongue 
Soft palate 
Pharynx
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6
Q

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

A

Sternocleidomastoid muscle

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7
Q

Sternocleidomastoid originates from where?

A

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

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8
Q

What is the action of the sternocleidimastoid (SCM)?

A

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.

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9
Q

The SCM is innervated by the ______________________

A

11th cranial nerve (Accessory nerve)

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10
Q

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

A

Trapezius muscle

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11
Q

SCM inserts where?

A

Mastoid process

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12
Q

The trapezius muscle originates from where?

A

Occipital bone & posterior midline of the cervical and thoracic regions

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13
Q

The trapezius muscle inserts where?

A

Clavicle & scapula

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14
Q

What is the action of the trapezius muscle?

A

Lift the clavicle and scapula (shrug your shoulders)

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15
Q

Trapezius muscle is innervated by the ____________________

A

11th cranial nerve (accessory nerve)

16
Q

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

A

Skin

17
Q

All muscles of facial expression are innervated by the ____________________

A

7th cranial nerve (Facial nerve)

18
Q

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

A

Muscles of facial expression

19
Q

_____ muscles to smile

_____ muscles to frown

A

17

43

20
Q

The muscles of facial expression are situated in the ___________________________

A

Scalp, eye, or mouth region

21
Q

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

A

Epicranial muscle

22
Q

The epicranial muscle raises the _________________________

A

Eyebrows & scalp (when person shows surprise)

23
Q

_________________________ is a muscle of facial expression that encircles the eye

A

Orbicularis oculi muscle

24
Q

Orbicularis oculi muscle originates from where?

A

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

25
Q

Orbicularis oculi inserts where?

A

Lateral region of the eye

26
Q

What is the action of the orbicularis oculi muscle?

A

Closes the eyelid

27
Q

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

A

Corrugator supercilii muscle

28
Q

Corrugator Supercilii Muscle

              Origin 

              Insertion

              Action
A

Origin- frontal bone

Insertion- skin tissue of eyebrow

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

29
Q

______________is an important muscle of facial expression in the mouth region

A

Orbicularis oris muscle

30
Q

Orbicularis Oris Muscle

        Origin 

        Insertion 

        Action
A

Origin- encircles mouth

Insertion- skin tissue @ angle of mouth

Action- close lips, pursing lips, grimacing, and pouting/kissing

31
Q

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

A

Buccinator Muscle

32
Q

Buccinator Muscle

       Origin

       Insertion

       Action
A

Origin- maxilla, mand, & pterygomandibular raphe

Insertion- angle of mouth

Action- chewing

33
Q

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

A

Risorius Muscle

34
Q

Risorius Muscle

        Origin 

        Insertion 

        Action
A

Origin- fascia superficial to masseter muscle

Insertion- angle of mouth

Action- stretch lips laterally

35
Q

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

A

Levator labii superioris

36
Q

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

A

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

Head & Neck Anatomy (2 decks)

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