cardio respiratory system

Question 1

what is the correct pathway of air

Answer 1

1•mouth/nose
2•trachea
3•bronchi
4•bronchioles
5•alveoli

Question 2

what is the purpose of the cardio respiratory system

Answer 2

it works together to get oxygen to the working muscles and remove carbon dioxide from the body

Question 3

what is the structure of an artery

Answer 3

•thick outer wall
•small lumen
•thick layer of muscles and elastic fibres

Question 4

what is the structure of a vein

Answer 4

•a thin layer of muscle and elastic fibres
•large lumen
•fairly thin outer wall

Question 5

what is the structure of a capillary

Answer 5

•very small lumen
•wall made of single layer of cell

Question 6

what 4 adaptations of the arteries help the rapid diffusion of oxygen to blood

Answer 6

-very good blood supply which maintains the concentration gradient between the aveoli and capillaries

-very thin walls and one cell thick

-large surface area so more space for oxygen

-moist surfaces gasses dislodge and form a solution n then pass through the cell membrane

Question 7

what blood vessel transports oxygenated blood back to the left atrium

Answer 7

aorta

Question 8

what is the correct pathway of blood in the cardiac cycle

Answer 8

right atrium~~right ventricle~~~left atrium~~~left ventricle

Question 9

what is defined as the volume of air left in the lungs after maximal expiration

Answer 9

residual volume

Question 10

what is described as the maximum amount of air that can be taken into the lungs taking in a normal breath

Answer 10

inspiratory reserve volume

Question 11

what happens to the digestive systems blood supply during excersize

Answer 11

blood supply reduces