RESPIRATORY SYSTEM LEC

Question 1

consists of the structures used to acquire oxygen (O2 ) and remove carbon dioxide (CO2 ) from the blood

Answer 1

respiratory system

Question 2

it is required for the body’s cells to synthesize the chemical energy molecule, ATP

Answer 2

oxygen

Question 3

a by-product of ATP production and must be removed from the blood

Answer 3

carbon dioxide

Question 4

it must be maintained within relatively narrow limits to maintain homeostasis

Answer 4

blood pH

Question 5

what will happen if there is an increase levels of CO2?

Answer 5

it will lower the pH of the blood

Question 6

encloses the chamber for air inspiration. Although air can be inspired through the mouth, the mouth is part of the digestive system rather than the respiratory system.

Answer 6

external nose

Question 7

a cleaning, warming, and humidifying chamber for inspired air

Answer 7

nasal cavity

Question 8

commonly called the throat. It serves as a shared passageway for food and air

Answer 8

pharynx

Question 9

frequently called the voice box. Its rigid structure helps keep the airway constantly open, or patent

Answer 9

larynx

Question 10

commonly known as the windpipe. It serves as an air-cleaning tube to funnel inspired air to each lung

Answer 10

trachea

Question 11

tubes that direct air into the lungs

Answer 11

bronchi

Question 12

a labyrinth of air tubes and a complex network of air sacs, called alveoli, and capillaries

Answer 12

lungs

Question 13

The air sacs are separated by

Answer 13

walls of connective tissue containing both collagenous and elastic fibers

Question 14

what is the major function of the respiratory system?

Answer 14

to supply the body with oxygen and to dispose of carbon dioxide

Question 15

what are the four distinct events in the respiratory system?

Answer 15

pulmonary ventilation
external respiration
respiratory gas transport

internal respiration

Question 16

moving air in and out of the lungs

Answer 16

pulmonary ventilation

Question 17

gas exchange between pulmonary blood and alveoli

Answer 17

external respiration

Question 18

transport of oxygen and carbon dioxide via the bloodstream

Answer 18

respiratory gas transport

Question 19

gas exchange between blood and tissue cells in systemic capillaries

Answer 19

internal respiration

Question 20

two phases in the pulmonary ventilation

Answer 20

inspiration
expiration

Question 21

a phase in pulmonary ventilation that flow of air into the lung

Answer 21

inspiration

Question 22

a phase in pulmonary ventilation that air is leaving the lungs

Answer 22

expiration

Question 23

in inspiration what organ/s contracts?

Answer 23

diaphragm and intercostal muscles

Question 24

Largely a passive process which depends on natural lung elasticity

Answer 24

expiration

Question 25

as the muscles relax, what is being pushed out of the lungs?

Answer 25

air

Question 26

it can occur mostly by contracting internal intercostal muscles to depress the rib cage

Answer 26

forced expiration

Question 27

Can be caused by reflexes or voluntary actions

Answer 27

Nonrespiratory Air Movements

Question 28

Sounds are monitored with a stethoscope

Answer 28

respiratory sounds

Question 29

produced by air rushing through trachea and bronchi

Answer 29

bronchi sounds

Question 30

soft sounds of air filling alveoli

Answer 30

vesicular breathing sounds

Question 31

physical factors influencing respiratory rate and depth

Answer 31

Increased body temperature
Exercise
Talking
Coughing
Volition (conscious control)
Emotional factors

Question 33

chemical influencing respiratory rate and depth

Answer 33

Carbon dioxide levels
oxygen levels