Chapter 7 And 8 Questions Info Flashcards
If avn leaked
No delay between p and q , and first ventricular systole downwards too
Fetid hole septum why
Lungs don’t function , blood oxygenated in placenta , so circuit pulmonary bypassed
Why feral have high affinity
Fet hameoglobin must be able to bind with oxygen in placenta at a low partial pressure more than
Role of oxygen
Don’t say bind say
High affinity for oxygen and needs to bind with it in lungs at high po2 and unload it at respiring tissues from oxyhaemoglobi
Say load
How else other than whole ph buffer does carbon dioxide make it easier to lose oxygen
Changes shape of hameoglobin such that more oxygen is released
Relate detail hameoglobin to po2 of placent a
Placenta has low po2 so adult hameoglobin will release more o2 and a placenta needs to have a higher affinity for oxygen so it can associate with oxygen at a lower po2 , more saturated than adult at same po2
(What helps oxygen and glucose diffuse to tissue fluid )?
Diffusion ? It’s mainly pressure forcing them out
Why cartilage essential in trachea
- provides strength to keep tube open
- prevents collapse of tube in low pressures when breathing in
What causes fluctuations of aorta 2
Ventricular systole increases pressure
However blood flowing onwards decreased pressure
Why blood pressure needs to be reduced for capillarity
Lower chance of idek a high pressure
Thin so burst
Give time for it join
TWO ADVANTAGES OF KEEPING BLOOD IN VESSELS third point
- higher pressure can be achieved
- so rate of blood flow transfer increased
- BLOOD CAN BE DIVERTED !!!
How artery withstand and maintain
Withstand = thick collagen layer provides strength to withstand huge pressures
Maintain = elastin fibres in elastic tissue allow artery walk to expand with increase pressure and also recoil to maintain this pressure and provide continuous
Dumb point why left ventricle thicker ?
Cuz it has more muscle (bruh)
Can generate higher pressure to go around whole body rather than just overcome resistance of pulmonary circuit
Weird but they this bicuspid valve close
This because ventricular systole is when pressure of ventricle increases more than atria so close
Why wear nose
Flip
So that all air breathed comes from chamber and none breathed out escapes and makes results INVLAID
