BTR-exchange surfaces ✖

Question 1

squamous epithelium?

Answer 1

squamous-cells that are very flat and thin
epithelium-tissue adapted to cover internal and external body surfaces

Question 2

Label the lung:
https://quizlet.com/gb/430174243/biology-a-level-lungs-to-label-diagram/#

Answer 2

check answers

Question 3

Give the structure and function of the intercostal muscles

Answer 3

-external and internal muscles between the ribs
-contract 2 move ribs up + out 4 increased thorax vol 4 inhalation
-internal muscles contract 2 force air out

Question 4

Give the structure and function of the diaphragm

Answer 4

-muscular sheet separating thorax + abdomen
-contacts and moves downwards 2 provide increased thorax vol 4 inhalation

Question 5

Give the structure and function of the Trachea

Answer 5

-muscular pipe w/surrounding rings of cartilage
-allows air 2 pass in+out of lungs + cartilage provides structure

Question 6

Give the structure and function of the lungs

Answer 6

-organs with rich blood supply and large internal SA
-allow gases 2 be taken in+out thru breathing

Question 7

Give the structure and function of the alveoli

Answer 7

-thin walled moist air sacs in the lungs
-provides large+thin SA 4 maximum gas exchange within blood

Question 8

Give the structure and function of the nose

Answer 8

-allows air into the trachea and has a rich blood supply,moist surface+nasal hairs
-blood warms & ads water vapour 2 air whilst nasal hair collect dust/microbes

Question 9

Give the structure and function of the pulmonary artery

Answer 9

-thick walled+carrying blood at high pressure
-delivers deoxygenated blood to alveoli

Question 10

Give the structure and function of the pulmonary vein

Answer 10

-thin walled blood vessel carrying blood at low pressure
-oxygenated blood from lungs 2 heart

Question 11

If volume increases, pressure _______________
If volume decreases, pressure _______________
gasses and fluids move from an area of _________ _________ to an area of ________ _________

Answer 11

decreases,increases,high pressure,low pressure

Question 12

During inhalation, external inter-costal muscles _______ to ________ ribs, the diaphragm __________ and __________, volume of chest cavity _________, pressure in chest cavity ____________ ____________ atm. Therefore air moves ___________ the ________

Answer 12

contract, raise, contracts, flattens, increases, drops below, into, lungs

Question 13

During exhalation, external inter-costal muscles _______ so ribs will ______, internal intercostal muscles can _________ to force air out if needed, the diaphragm __________ and is __________ by digestive organs, volume of chest cavity _________, pressure in chest cavity ____________ ____________ atm. Therefore air moves ___________ the ________

Answer 13

relax,fall, contract, relaxes, raised, decreases, rises,above, out,lungs