respiratory

Question 1

what is inspiration?

Answer 1

Breathing of air into

Question 2

What is expiration?

Answer 2

Breathing air out of lungs

Question 3

What is external respiration?

Answer 3

Gaserous exchange of 02 and c02 between the lungs and blood

Question 4

What is internal respiration?

Answer 4

Exchange of 02 and c02 between the blood and. muscle/ organs

Question 5

What is cellular respiration?

Answer 5

Occurs in the mitochondria where 02 is used to breakdown glucose into c02 and h20 during aerobic respiration

Question 6

What muscles ae used in inspiration? (during exercise)

Answer 6

Sternocleidomastoid, scaliness

Question 7

What muscles are used in inspiration in rest and exercise?

Answer 7

External intercostals and diaphragm

Question 8

What muscles are used in expiration (only ever used in exercise)?

Answer 8

Intercostals 
external oblique
internal oblique
rectus abdomius
transverse adbomins

Question 9

What is the steps of mechanical breathing?

Answer 9

Muscled actively contract or passively relax to cause
movement of the ribs sternum and abdomen which causes
the thoracic cavity volume to either increase or decrease which in turn causes the
lung air pressure to either increase or decrease which causes
ipsiration or expiration

Question 10

What happens to lung air pressure in inspiration relaxing?

Answer 10

Lung air pressure decreases, thoracic cavity increases

Question 11

What happens in 02 transport?

Answer 11

97% if oxygen in red blood cells as haemoglobin (oxyhaemoglob)
3% blood plasma

Question 12

What happens in c02 transport?

Answer 12

23% in haemoglobin as carbaminhaemoglin

7% dissolved in plasma

Question 13

What does gaseous exchange rely on?

Answer 13

Relies on diffusion, gases move from an area of high to low pressure.
This is called the diffusion gradient

Question 14

What is partial pressure?

Answer 14

The pressure a gas exerts within a mixture of gases

Question 15

What is the partial pressure like with oxygenated blood?

Answer 15

High partial pressure 02 and low partial pressure c02

Question 16

What is the partial pressure like in deoxygenated blood?

Answer 16

Low partial pressure 02 and high partial pressure c02

Question 17

What happens with the diffusion of carbon dioxide in the alveoli?

Answer 17

O2 moves from the alveoli into the blood into the capillaries, c02 moves from the capillaries into the alveoli to be breathed out

Question 18

What does the oxygen dissociate curve represent?

Answer 18

How much haemglobin is in the alveoli

Question 19

Why does the curve shift to the right for oxygen dissociative curve?

Answer 19

Curve is shifting to the right due to exercise caused the Bohr effect/bohr shift. Allows 02 to dissociate from haemogloibin more easily. Haemoglobin releasing more 02 into the working muscles.

Question 20

What are the 4 factors that effect the curve going to the right?

Answer 20

Muscle temperature, decrease in pp 02

increase