lungs, airways and blood supply

Question 1

Why is gas exchange so important?

Answer 1

need to produce energydoes this by burning oxygen and releaseing energy, produce co2 as a waste product

Question 2

What is the respiratory system responsible for?

Answer 2

acquiring oxygen and removing co2

Question 3

what do you need for the resp system to work efficiently?

Answer 3

cardiovascular system

Question 4

what is the cardiovascular system responsible for?

Answer 4

transporting oxygen to tissues, transporting co2 away from tissues

Question 5

where does the blood in pulmonary artery travel from

Answer 5

away from the heart

Question 6

where does the blood in pulmonnary vein travel?

Answer 6

towards the heart

Question 7

true or falsepulmonary circulation is opposite from systemic circulation in function

Answer 7

truuuu

Question 8

which circulation delivers co2 and picks up o2?

Answer 8

pulmonary circulation

Question 9

what does systemic circulation do?

Answer 9

delivers o2 and picks up co2

Question 10

whats the first site of the body where air enters?

Answer 10

nose

Question 11

what is the order of resp system

Answer 11

nose, pharynx, epiglottis, larynx, trachea, bronchus, lung

Question 12

whats the function of the epiglottis

Answer 12

small flap of tissue folds over the trachea and prevents food fromm entering it when you swallow

Question 13

what is the larynx

Answer 13

voice box

Question 14

true or falsetrachea is in the upper resp tract

Answer 14

fasle, lower

Question 15

how many branches does bronchus have?

Answer 15

22

Question 16

what is alveoli surrounded by?

Answer 16

eslastic fibres and network of capillaries

Question 17

why does gas exchange only happen at the alveoli

Answer 17

the walls of upper airways are too thick to alow gases to cross

Question 18

whats the lining of the resp tract

Answer 18

epitheliumpseudo stratified, columnar

Question 19

what kidn of epitheliem does it become from the progression from nose to alveoli

Answer 19

squamous

Question 20

functions of mucous

Answer 20

traps particlesprovides large surface area for cillia to act on

Question 21

what are the two types of alveoli

Answer 21

type 1 pneumocytes and type 2 pneumocytes

Question 22

what kind of epithelium is type 1 pneumocytes

Answer 22

simple squamous

Question 23

whats composed in type 2

Answer 23

phospholipids and protein

Question 24

whats the function of type 2

Answer 24

Reduces surface tension at alveolar surfaceReduces work of breathing