Ventilation/Mastication

Question 1

TLC

Answer 1

5.5-6 L

Question 2

max volume of air that can be exhaled after max inhalation

Answer 2

vital capacity

~4.5L

Question 3

volume of air moved in/out of lungs during ventilation cycle

Answer 3

tidal volume

~.5 L

Question 4

name the true, false and floating ribs

Answer 4

true 1-7
false 8-10
floating 11-12

Question 5

what articulation ossifies late in life?

Answer 5

manubriosternal aka sternal angle

Question 6

what makes up a costovertebral joint?

Answer 6

head of rib and two adjacent vert bodies and the IV disc

Question 7

typical/atypical ribs

Answer 7

typical 2-9

atypical 1, 10-12

Question 8

what makes up a costotransverse joint?

Answer 8

costal tubercle of rib w costal facet of TP

Question 9

where are costochondral articulations?

Answer 9

ribs 1-10 + costal cart

Question 10

where are costosternal articulations?

Answer 10

costal cart of ribs 1-7 + sternum

Question 11

what type of articulations are costochondral?

Answer 11

synchondrosis

Question 12

what type of articulations are costosternal?

Answer 12

1 = synchondrosis
2-7 = synovial

Question 13

what type of articulations are interchondral?

Answer 13

synovial

Question 14

what type of articulations are costotransverse?

Answer 14

synovial

Question 15

what type of articulations are costovertebral?

Answer 15

synovial

Question 16

what type of articulations are manubriosternal and xiphisternal?

Answer 16

synchondrosis

Question 17

where are interchondral articulations?

Answer 17

5-10 articulate w cart above

Question 18

upper ribs vs lower ribs movement

Answer 18

upper: pump handle
lower: bucket handle

Question 19

in rib elevation, which moves more: sternum or manubrium?

Answer 19

sternum

Question 20

purpose of bucket handle movement

Answer 20

inc transverse diameter of lower thorax

Question 21

forced expiration rib movement is accompanied by slight…

Answer 21

TS flexion

Question 22

inspiration is initiated by the _______ which in turn, ____________

Answer 22

diaphragm contracting

inc intraabdominal pressure

Question 23

expiration = ______ of muscles

Answer 23

relaxing

Question 24

this muscle performs 60-80% of the work during inspiration

Answer 24

diaphragm

Question 25

diaphragm increases _________ volume

Answer 25

intrathoracic

Question 26

scalene's role in inspiration

Answer 26

elevate upper ribs and sternum

Question 27

3 types of intercostals

Answer 27

externi interni intimi

Question 28

role of externi intercostals

Answer 28

inspiration and contralateral trunk rotation

Question 29

role of interni intercostals

Answer 29

inspiration and forced expiration, ipsilateral trunk rotation

Question 30

serratus posterior superior/inferior roles

Answer 30

superior: elevate upper ribs inferior: stabilize lower ribs

Question 31

lats role in forced inspiration

Answer 31

elevate lower ribs if arms fixed

Question 32

quad lumborum role in forced inspiration

Answer 32

stabilizes lower ribs

Question 33

2 groups of muscles responsible for forced expiration

Answer 33

1. abs | 2. transverse thoracis/intercostals

Question 34

scoliosis and rib hump are on _____ side

Answer 34

same

Question 35

what happens to intercostal muscles on each side of scoli?

Answer 35

convex side = space widened | concave side = muscles adaptively shorten

Question 36

TMJ = articulation between what two things

Answer 36

mandib condyle and mandib fossa +articular disc

Question 37

mandibular fossa is a _________ surface

Answer 37

non-articular

Question 38

what is the art disc made of?

Answer 38

dense fibrocartilage

Question 39

articular disc is aneural and avascular except for _____

Answer 39

periphery

Question 40

4 roles of articular disc

Answer 40

1. max congruency 2. dec contact pressure 3. provide stability 4. guides condyle

Question 41

5 movements of TMJ

Answer 41

protrusion/retrusion lateral excursion depression/elevation

Question 42

arthokin of rotation of TMJ

Answer 42

mandib condyle rolls relative to inferior surface of disc

Question 43

arthrokin of translation of TMJ

Answer 43

condyle and disc slide togetha

Question 44

arthrokin of protrusion

Answer 44

condyle-disc complex translate ant/inf

Question 45

arthrokin of lateral excursion

Answer 45

ipsilateral condyle spins within fossa contralateral condyle rotates anterior and medially

Question 46

arthrokin of depression

Answer 46

early phase: posterior rotation | late phase: ant/inf translation

Question 47

4 primary muscles of mastication

Answer 47

masseter temporalis medial pterygoid lateral pterygoid

Question 48

3 associated factors w TMJ disorders

Answer 48

1. stress/emotional disturbance 2. posture 3. clenching/grinding

Question 49

4 signs of TMJ disorder

Answer 49

popping locking reduced bite force reduced ROM

Question 50

medial pterygoid action

Answer 50

bilateral elevation/protrusion, unilaterally deviate to contralateral side

Question 51

lateral pterygoid action

Answer 51

unilaterally deviate in contralateral direction, bilateral protrusion, depression

Question 52

masseter action

Answer 52

elevation

Question 53

temporalis action

Answer 53

elevation and retraction

Question 54

suprahyoid muscle action

Answer 54

depression

Question 55

infrahyoid action

Answer 55

stabilize hyoid to allow suprahyoid to depress