muscular system

Question 1

All are superficial muscles
they insert into the overlying skin
they develop from the branchial arches
innervated by the facial nerve

Answer 1

MUSCLES OF THE FACE

Question 2

inserts into the RADIUS originates in the SCAPULA

Answer 2

biceps muscle

Question 3

inserts into the BONE originates from ANOTHER BONE

Answer 3

muscle

Question 4

inserts on SKIN originates on a BONE

Answer 4

facial muscle

Question 5

muscles of the face

Answer 5

frontalis
orbicularis oculi
orbicularis Oris
buccinator
zygomaticus
platysma

Question 6

● Origin: frontal bone
● Insertion: skin of eyebrows
● Action: raises eyebrows, wrinkles forehead

Answer 6

frontalis

Question 7

● Origin: bony orbit (eye socket)
● Insertion: eyelids
● Action: closes the eyelids
○ squinting, blinking, winking

Answer 7

orbicularis oculi

Question 8

● Origin: maxilla and mandible
● Insertion: lips
● Action: puckers the lips

Answer 8

orbicularis oris

Question 9

osculate

Answer 9

kissing

Question 10

prevents contracting the frontalis
■ (temporary) prevents
contraction, prevents wrinkling

Answer 10

botox

Question 11

when a muscle shortens, it pulls
the insertion towards the origin

Answer 11

kissing

Question 12

trumpeter or buccal

Answer 12

buccinator

Question 13

● Origin: molar regions of the maxilla and
mandible - towards the back
● Insertion: cheek - blowing and sucking
● Action: compresses the cheeck, as when
blowing and sucking

Answer 13

buccinator

Question 14

● Origin: zygomatic bone
● Insertion: skin at corners of mouth
● Action: smiling (raises corners of mouth) - pull
corners of the mouth upwards

Answer 14

zygomaticus

Question 15

● Origin: fascia of chest - originates from skin,
inserts on bone
● Insertion: mandible
● Action: pulls the lower lip and jaw downwards

Answer 15

platysma

Question 16

EXTRINSIC MUSCLES OF THE EYE

Answer 16

superior rectus
inferior rectus
medial rectus
lateral rectus

Question 17

means straight

Answer 17

rectus

Question 18

● elevates the eye
● rotates the eye towards the ceiling and move
your head

Answer 18

superior rectus

Question 19

● depresses the eye
● antagonist of superior rectus

Answer 19

inferior rectus

Question 20

● rotates the eye medially
● towards the midline

Answer 20

medial rectus

Question 21

● rotates the eye laterally

Answer 21

lateral rectus

Question 22

rotates
the eye down and laterally

Answer 22

superior oblique

Question 23

rotates eye up and laterally

Answer 23

inferior oblique

Question 24

General Characteristics
1. They develop from the Branchial Arches
2. They are innervated by the trigeminal nerve -
most important nerve for dentists

Answer 24

muscles of mastication

Question 25

most important nerve for dentists

Answer 25

trigeminal nerve

Question 26

MUSCLES OF MASTICATION

Answer 26

temporalis and masseter

Question 27

● Origin: temporal bone ● Insertion: mandible ● Action: elevates mandible, and thus closes the jaw

Answer 27

temporalis

Question 28

○ very powerful muscle

Answer 28

masseter

Question 29

● Origin: zygomatic arch ● Insertion: mandible ● Action: chewing

Answer 29

masseter

Question 30

1. They develop from the occipital somies 2. They are innervated by the hypoglossal nerve

Answer 30

MUSCLES OF THE TONGUE

Question 31

MUSCLES OF THE TONGUE

Answer 31

intrinsic muscle and extrinsic muscle

Question 32

● located entirely within the tongue

Answer 32

intrinsic muscle

Question 33

kinds of muscle fibers in intrinsic muscles

Answer 33

longitudinal muscle fibers vertical muscle fibers transverse (horizontal) muscle fibers

Question 34

lengthwise from front to back

Answer 34

longitudinal muscle fibers

Question 35

up and down

Answer 35

vertical muscle fibers

Question 36

their origin is outside the tongue; inserts into tongue

Answer 36

extrinsic muscle

Question 37

sticks the tongue out or protracts or protrudes the tongue

Answer 37

genioglossus

Question 38

retracts the tongue - antagonist of the genioglossus ■ originates from the styloid process of the temporal bone

Answer 38

styloglossus

Question 39

true or false muscles are antagonistic

Answer 39

true

Question 40

General Characteristics 1. They develop from the Branchial Arches 2. They are innervated by the Glossopharyngeal Nerve

Answer 40

MUSCLES OF THE PHARYNX (THROAT)

Question 41

MUSCLES OF THE PHARYNX (THROAT)

Answer 41

thick outer layer of constrictor muscle thin inner layer of longitudinal muscle

Question 42

● contracts, narrows the throat ● forces food into the esophagus ● Ex: constrictor pharyngis

Answer 42

thick outer layer of Constrictor muscles

Question 43

● elevates the soft palate ● closing off the nasopharynx from the oropharynx, during deglutition

Answer 43

thin inner layer of longitudinal muscles

Question 44

OTHER MUSCLES

Answer 44

Suprahyoid bone Trapezius muscle Rhomboideus serratus anterior

Question 45

Origin: mandible ● Insertion: hyoid bone ○ U-shaped bone under our jaw ● Action: elevates the hyoid bone and base of tongue during swallowing ● They are all innervated by the trigeminal nerve

Answer 45

suprahyoid bone

Question 46

major prime mover of our back and shoulders ○ stiff neck, massage

Answer 46

trapezius

Question 47

● Origin: Vertebrae ● Insertion: Clavicle and Scapula ● Action: Elevates and adducts shoulder

Answer 47

trapezius

Question 48

Classifications of trapezius muscles

Answer 48

● Clavotrapezius ● Acromiotrapezius ● Spinotrapezius

Question 49

raises shoulder up

Answer 49

Clavo trapezius

Question 50

brings your shoulder to the midline

Answer 50

Acromiotrapezius

Question 51

to lower our shoulders

Answer 51

spinotrapezius

Question 52

● Origin: Vertebrae ● Insertion: Scapula ● Action: adducts shoulder ○ helper muscles or synergists

Answer 52

rhomboideus

Question 53

● Origin: Ribs ● Insertion: Scapula ● Action: pulls shoulder down ○ helper muscles or synergists

Answer 53

serratus anterior