L1 supporting metabolism

Question 1

why do we need CVRS

Answer 1

These body systems carry oxygen to the muscles and organs of the body, and remove waste products, including carbon dioxide.

Question 2

metabolism uses what

Answer 2

oxgyen

Question 3

metabolism produces what

Answer 3

CO2

Question 4

how to quantify metabolism

Answer 4

RQ= amount of CO2 produced/ amount of oxgyen used

Question 5

functions of RS

Answer 5

-gas exchnage
-blood pH control
-immune function
temp control
-blood reservoir in vessels

Question 6

what airways are present in RS

Answer 6

upper and lower

Question 7

parts of upper airways and functions

Answer 7

-nasal cavity
-pharynx
-layrnx
functions are filtering, warming, humidifying and distribution of air

Question 8

parts of lower airways and functions

Answer 8

trachea, primary bronchi and lungs

-distributing air and gas exchnage

Question 9

what zones are there in lower airway and what are they

Answer 9

• conducting zone - air transferred from the airways to the gas exchnage regions
• respiratory zone - regions where gas exchange occur

Question 10

features of alveoli

Answer 10

• from the respiratory brionchiole
• large SA for efficient exchange
• has ciliated cell to trap any excess air particles in mucusb

Question 11

functions of CVS

Answer 11

-transport of nutrients and hormones
–gas exchnage
-blood pH control
-immune function
temp control
-blood reservoir in vessels

Question 12

calculating flow regarding pressure and resistance

Answer 12

flow = Pressure/R

-for laminar flow

Question 13

units for pressure in RS

Answer 13

cmH2O or kPa

Question 14

units for pressure in CVS

Answer 14

mmHg

Question 15

how does the pressure change from the left artium all the way to the right atrium

Answer 15

pressure decreases

Question 16

types of pressures in RS

Answer 16

• P(B) - barometric pressure -outside of chest wall
• P(Pl) between pleural membranes (parietal and visceral pleura)
• P(A) - in the alveoli
• Paw - in the airways