lecture 34

Question 1

muscles of forced expiration are muscles that do what

Answer 1

act on the lungs indirectly to “squeeze” the air out of them

Question 2

in forced expiration, rib cage is

Answer 2

pulled down and squeeze abdomen and force the viscera/diaphragm upward

Question 3

lateral portion is significant contributors for forced expiration

Answer 3

internal intercostal- interosseous portion

Question 4

originates on superior margin of each rib and runs up and medially to insert into inferior surface of rib above

Answer 4

internal intercostal - interosseous portion

Question 5

depresses rib cage

Answer 5

internal intercostal interosseous portion

Question 6

deepest of intercostal muscles

Answer 6

innermost intercostal - intercostales intimi

Question 7

originate on surface of the lower rib and course obliquely up to the rib above

Answer 7

innermost intercostal- intercostales intimi

Question 8

lateral aspect of inner rib cage

Answer 8

innermost intercostal- intercostales intimi

Question 9

depress ribs 1-11

Answer 9

innermost intercostal- intercostales intimi

Question 10

inner surface of rib cage

Answer 10

transversus thoracis

Question 11

originates on sternum coursing to inner chondral surface of ribs 2-6

Answer 11

transversus thoracis

Question 12

resists elevation of the rib cage - depresses it

Answer 12

transversus thoracis

Question 13

decreases volume of thoracic cavity

Answer 13

transversus thoracis

Question 14

originate on spinous process of T11, 12, and L1-L3 and course upward into lower margin of lower five ribs

Answer 14

serratus posterior inferior

Question 15

pull rib cage down

Answer 15

serratus posterior inferior

Question 16

found on inner posterior wall of thorax - may span more than one rib

Answer 16

subcostals

Question 17

inner surface of rib near angle and runs down and lateral to inner surface of second or third rib below

Answer 17

subcostals

Question 18

depresses thorax

Answer 18

subcostals

Question 19

runs laterally, deepest anterior abdominal muscle

Answer 19

transversus abdominis

Question 20

originates in posterior aspect of vertebral column

Answer 20

transverse abdominis

Question 21

inserts into abdominis aponeurosis and inner surface of ribs 6-12

Answer 21

transverse abdominis

Question 22

inferior attachment of transversus abdominis

Answer 22

pubis

Question 23

reduces volume of abdomen

Answer 23

transversus abdominis

Question 24

originates from inguinal ligament and iliac crest

Answer 24

internal oblique abdominis

Question 25

inserts into cartilaginous portion of lower ribs, abdominal aponeurosis and linea alba

Answer 25

internal oblique abdominis

Question 26

most surficial of abdominal muscles

Answer 26

external oblique abdominis

Question 27

originate along osseous portion of lower seven ribs

Answer 27

external oblique abdominis

Question 28

fan downward to insert into iliac crest

Answer 28

external oblique abdominis

Question 29

compresses abdomen

Answer 29

internal and external oblique abdominis

Question 30

midline muscles of abdomen

Answer 30

rectus abdominis

Question 31

originate at pubis and insert into xiphoid process of sternum and cartilage of rib 7-10

Answer 31

rectus abdominis

Question 32

use this muscle when you do sit ups

Answer 32

rectus abdominis

Question 33

originate along iliac crest and fan up and inward to insert into lumbar vertebrae and inferior border of 12th rib

Answer 33

quadratus lumborum

Question 34

lateral movement of trunk and fix the abdominal wall to support abdominal compression

Answer 34

quadratus lumborum

Question 35

originates from lumbar, sacral, and lower thoracic vertebrae; fanlike fibers insert into humerus

Answer 35

latissimus dorsi

Question 36

chest stabilitiy, expiration, and assists w movement of upper extremity

Answer 36

latissimus dorsi

Question 37

inspiration

Answer 37

use of muscular action to exert force and overcome gravity; stretch tissue and distend the abdomen

Question 38

exhalation

Answer 38

uses elasticity and gravity to save energy; muscles relax and return to original state due to elasticity and gravity

Question 39

lungs are:

Answer 39

highly elastic, porous tissue; spong like

Question 40

in adult bodies:

Answer 40

lungs do not completely fill up the thoracic cavity

Question 41

when lungs are stretched

Answer 41

they are stretched beyond their resting position

Question 42

what is result of lungs stretching

Answer 42

increased capacity and reserve

Question 43

lungs expand

Answer 43

muscles are expanding the rib cage and then they relax, lungs return to original shape and size

Question 44

abdominal muscles do what when you inhale

Answer 44

stretch when you inhale and then they relax and return to their original length - they push the abdominal viscera back in and force the diaphragm up

Question 45

conversational speech

Answer 45

35-60% of vital capacity

Question 46

loud speech

Answer 46

uses lung volumes up towards 80% of vital capacity

Question 47

how do we maintain the continuous flow of air upon expiration to use it for speech

Answer 47

- the muscles of inspiration must intervene - they check the outflow of air - they impede the outflow of air to maintain a constant subglottal pressure - this gives us control of phonation

Question 48

abdominal muscles remain in what state

Answer 48

state of graded tonic contraction during exhalation

Question 49

long drawn out expiration to

Answer 49

produce long utterances

Question 50

short inspiration to

Answer 50

maintain the smooth flow

Question 51

10% of respiratory cycle

Answer 51

on inspiration

Question 52

90% of. cycle

Answer 52

on exhalation