Head And Neck

Question 0

Shape of disc at TMJ? Type of joint?

Answer 0

Bi-concave, considered a complex modified hinge joint

Question 1

What type of joints are the sutures of the skull?

Answer 1

Synarthroidal

Question 2

Motions at the TMJ on the x axis?

Answer 2

Sagittal plane elevation and depression, more in lower portions of joint

Question 3

Motions at the TMJ around the y axis?

Answer 3

Lateral deviation, protraction, retraction, along the transverse plane, translatory, upper portion of joint

Question 4

There is a mechanical linkage of TMJ elevation with _________?

Answer 4

Retraction

Question 5

There is a mechanical linkage of TMJ depression with_______?

Answer 5

Protraction

Question 6

What actions occur at the AO joint?

Answer 6

Flexion, extension (x axis), lateral Flexion (z axis)

Question 7

T or F. The AO joint is a uniaxial pivot joint

Answer 7

False! the AO joint is biaxial condylar joint! (x and z)

The AA joint is a uniaxial pivot joint. ( y axis)

Question 8

Action at the AA joint?

Answer 8

Lateral rotation on the Y axis

Question 9

T or F. The zygapophyseal joints at C2 to C7 are triaxial planar joints and work collectively to give more movement.

Answer 9

True

Question 10

At what joint does the first 5 degrees of neck flexion occur?

Answer 10

AO

Question 11

At what joint does the first 15 degrees of neck extension as well as the first 5 degrees of lateral flexion occur?

Answer 11

AO

Question 12

T or F. The last 45 degrees of neck rotation occur at AA joint on the y axis?

Answer 12

False. It’s the first 45 degrees, further at C2 to C7

Question 13

Name two strong elevators for mastication.

Answer 13

Temporalis and masseter. Surprise palpation! Take a moment to palpate you masseter. Stop clenching it, physiology final is over, we can relax now.

Question 14

Name the action of the medial pterygoid.

Answer 14

Good closer due to a line of pull similar to massetter. Also protracts, also lateral deviation to the opposite side.

Question 15

What two muscles lateral deviate the jaw to the opposite side?

Answer 15

Medial and lateral pterygoid

Question 16

T or F. At the jaw, closers are stronger than openers, opening is more passive.

Answer 16

True

Question 17

The hyoid is typically in line with which vertebrae?

Answer 17

C4

Question 18

What is the Main function of the suprahyoids? Hint, it’s not opening the jaw.

Answer 18

To protect the airway by getting it out of the way when you swallow, in other Wikipedia words, elevate the hyoid and widen the esophagus during swallowing.

Question 19

T or F. The infrahyoids offer a stabilizing synergy with the suprahyoids.

Answer 19

True

Question 20

Name all the actions of Hollands favorite SCM.

Answer 20

Flexes at C2 to C7 joint, extends at AO joint, ipsilateral lateral (can I say that?) flexion, and contralateral rotation. Having two heads means lots of actions.

Question 21

RCA

What joint, what action?

Answer 21

AO flexor

Question 22

RCL

What joint? What action?

Answer 22

AO, lateral flexor

Question 23

RCP Major

What joint? What action?

Answer 23

AO Joint, extensor, AA joint ipsilateral rotation, ipsilateral lateral flexion

Question 24

RCP Minor | What joint? What action?

Answer 24

AO, extension and same side lateral flexor

Question 25

OCS | What joint, what action?

Answer 25

AO, extend and lateral flex on same side

Question 26

OCI | What joint? What action?

Answer 26

AA joint, rotation to same side.

Question 27

Longus capitis | Action?

Answer 27

Flexes cervical spine, ipsilateral lateral flexion, straight orientation (not gay) of muscle fibers means no rotation.

Question 28

Longus colli | Actions?

Answer 28

Flexes cervical spine, lateral flexor, like SCM, directional obliqueness makes it a contralateral rotator

Question 29

Splenius Capitis | Actions?

Answer 29

Extensor Lateral flexor Ipsilateral rotation Attaches on mastoid proccess, which I will never forget because it was on Keith's very hard quiz last summer that I did poorly on.

Question 30

Splenius cervicis | Actions?

Answer 30

Extension Lateral flexion And ipsilateral rotation of cervical spine only as it does not cross the AO joint.

Question 31

Anterior scalene actions?

Answer 31

Flexor, lateral flexor, contralateral rotation

Question 32

Middle scalene action?

Answer 32

Flexor, ipsilateral lateral flexor, very vertical orientation

Question 33

Posterior scalene action?

Answer 33

Ipsilateral lateral flexion,

Question 34

Actions of the upper traps are ipsilateral lateral flexion and _______?

Answer 34

Contralateral rotation

Question 35

Actions of the levator scapulae are contralateral rotation, ipsilateral lateral flexion, and ___________?

Answer 35

Extension