lecture exam 2 -head, trunk

Question 1

What is the epicranius composed of

Answer 1

occipitofrontalis muscles and epicranial aponeurosis

Question 2

Function of frontal belly of occipitofrontalis

Answer 2

elevates eyebrows and wrinkles skin of forehead

Question 3

Function of occipital belly of occipitofrontalis

Answer 3

retracts scalp slightly

Question 4

Function of orbicularis oculi

Answer 4

closes the eyes (blink, wink)

Question 5

Function of orbicularis oris

Answer 5

closes and purses lips

Question 6

Function of zygomaticus major

Answer 6

elevates corner of mouth (smile)

Question 7

Function of depressor anguli oris

Answer 7

depresses corner of mouth (frown)

Question 8

Function of Buccinator

Answer 8

pulls cheek against teeth when chewing (some trumpet players stretch this muscle out)

Question 9

Function of platysma

Answer 9

tenses skin of neck and depresses lower lip (pout)

Question 10

Define mastication

Answer 10

chewing

Question 11

Function of the mastication muscles

Answer 11

elevate the mandible

Question 12

What is the main force that depresses the mandible

Answer 12

gravity

Question 13

Function of masseter

Answer 13

elevate and protract mandible

Question 14

Function of temporalis

Answer 14

elevates and retracts mandible

Question 15

Function of medial pterygoid

Answer 15

elevates and protracts mandible and moves mandible side to side

Question 16

Function of lateral pterygoid

Answer 16

elevates and protracts mandible and moves mandible side to side

Question 17

Function of glenioglossus

Answer 17

protrudes tongue

Question 18

Function of styloglossus

Answer 18

elevates and retracts tongue

Question 19

Function of hyloglossus

Answer 19

depresses and retracts tongue

Question 20

Function of sternocleidnmastoid

Answer 20

• each rotates head to one side

- Together they flex the head/neck

Question 21

What bones does the sternocleidomastoid attach to

Answer 21

sternum, clavicle, mastoid process

Question 22

Function of splenius capitus

Answer 22

• each rotate head to one side

- together they extend head and neck

Question 23

Function of suprahyoid muscles

Answer 23

all collectively elevate the hyoid bone

Question 24

Function of Digastic

Answer 24

elevates hyoid and depresses mandible

Question 25

Function of stylohyoid

Answer 25

elevates hyoid bone

Question 26

Function of mylohyoid

Answer 26

elevates hyoid and raises floor of mouth

Question 27

Function of geniohyoid

Answer 27

elevates hyoid bone

Question 28

Function of infrahyoid muscles

Answer 28

depress the hyoid

Question 29

Function of sternohyoid

Answer 29

depresses hyoid

Question 30

Function of omohyoid

Answer 30

depresses hyoid

Question 31

Function of sternothyroid

Answer 31

depresses thyroid cartilage (voice box)

Question 32

Function of thyrohyoid

Answer 32

depresses hyoid bone and raises thyroid cartilage

Question 33

Function of superficial back muscles

Answer 33

move the scapula or numerous

Question 34

Function of quadratus lumborum

Answer 34

- together they extend the lumbar | - each laterally flexes vertebrae column

Question 35

Function of erector spinae muscles group

Answer 35

extend vertebral column

Question 36

List the muscles in the erector spinae muscle group

Answer 36

iliocostalis Longissimus Spinalis

Question 37

Function of superficial thorax muscles

Answer 37

mover upper limb

Question 38

Function of deep thorax muscles

Answer 38

respiratory muscles

Question 39

Function of diaphragm

Answer 39

contraction pulls the central portion down, increasing vertical of thorax

Question 40

function of external intercostals

Answer 40

elevate ribs during forced inhalation

Question 41

in what direction do the fibers of the internal intercostals run?

Answer 41

inferolaterally

Question 42

Function of internal intercostals

Answer 42

depresses ribs during forced exhalation

Question 43

In what direction do the fibers of external intercostals

Answer 43

inferomedially

Question 44

Function of abdominal muscles

Answer 44

flex vertebral column and compress abdominal wall

Question 45

Describe the structure and location of the external abdominal oblique

Answer 45

fibers run inferomedially, ran parallel to external intercostals

Question 46

Describe the structure and location of the internal abdominal oblique

Answer 46

fibers run inferolaterally, similar to infernal intercostals

Question 47

Function of perineum

Answer 47

- close inferior opening of pelvis - supports pelvic organs - assists w defecation, voluntary part of urination and childbirth

Question 48

Muscles of facial expressions

Answer 48

``` epicranius Orbicularis oculi Orbicularis oris Zygomaticus major Depressor anguli oris Buccinator Platysma ```

Question 49

Muscles of mastication

Answer 49

masseter Temporalis Medial Pterygoid Lateral Pterygoid

Question 50

Muscles of tongue

Answer 50

Glenioglossus Styloglossus Hyloglossus

Question 51

Muscles of posterior neck

Answer 51

sternocleidomastoid | Splenius capitus

Question 52

Suprahyoid muscles

Answer 52

digastic Stylohyoid Mylohyoid Geniohyoid

Question 53

Infrahyoid muscles

Answer 53

sternohyoid Omohyoid Sternothryoid Thyrohyoid

Question 54

Deep throax muscles

Answer 54

diaphragm External intercostals Internal imtercostals

Question 55

Abdominal muscles

Answer 55

external abdominal oblique Internal abdominal oblique Transversus abdominis Rectus abdominis