function of the cardiovascular system

Question 1

what does blood carry round the body?

Answer 1

o2 and co2
nutrients
metabolites
hormones
heat

Question 2

how is the cvs system flexible?

Answer 2

pump can vary output
vessels can redirect blood
vessels can store blood

Question 3

what must be equal if the pumps are in series?

Answer 3

output

Question 4

what does vascular beds being in parallel allow?

Answer 4

all tissues get oxygenated blood
allows regional redirection of blood
exceptions prove the rule

Question 5

what does pressure difference equal?

Answer 5

Mean Arterial Pressure –
Central Venous Pressure
Affects all tissues

Question 6

what controls the (flow = change in pressure/ resistance)

Answer 6

radius^4

Question 7

on the leftside of the lung, is it arteries or arterioles that goes into the legs

Answer 7

arterioles

Question 8

what are characteristics of the aorta

Answer 8

Elastic arteries = aorta
wide lumen, elastic wall
damp pressure variations

Question 9

what are characteristics of arteries?

Answer 9

Muscular arteries = other arteries
wide lumen, strong non-elastic wall
low resistance conduit

Question 10

what are characteristics of arterioles

Answer 10

Resistance vessels = arterioles
narrow lumen, thick contractile wall
control resistance & therefore flow
allow regional redirection of blood

Question 11

what are characteristics of capillaries?

Answer 11

Exchange vessels = capillaries

narrow lumen, thin wall

Question 12

what are characteristics of venules and veins?

Answer 12

Capacitance vessels = venules & veins
wide lumen, distensible wall
low resistance conduit, & reservoir
allows fractional distribution of blood between veins & rest of circulation (esp. heart)

Question 13

which side of the heart pumps towardsd rest of the body?

Answer 13

left

Question 14

which side of the heart pumps towards the lungs?

Answer 14

right

Question 15

which vein is oxygenated?

Answer 15

pulmonary vein

Question 16

which artery is oxygenated?

Answer 16

aorta

Question 17

which vein is de-oxygenated?

Answer 17

inferior and superior vena cava

Question 18

which artery is deoxygenated?

Answer 18

pulmonary artery

Question 19

why does the kidney take a lot of the blood

Answer 19

needs it to filter

Question 20

what other organ of the body uses more blood than it needs?

Answer 20

skin- needs it for temperature

Question 21

are arteries elastic?

Answer 21

no

Question 22

what side of the heart pumps blood through systemic system?

Answer 22

left

Question 23

why is tricuspid valve called that

Answer 23

its got 3 cusps