From PPQ

Question 1

Give the pathway a red blood cell takes when travelling in the human circulatory system from a kidney to the lungs

Answer 1

Renal vein
Vena cava to right atrium
Right ventricle to pulmonary artery

Question 2

Explain how water from tissue fluid is returned to the circulatory system

Answer 2

Protein remain in the capillary
Creates water potential gradient
Water moves to blood by osmosis
Returns to blood by lymphatic system

Question 3

2 precautions student should take when clearing away after a dissection

Answer 3

Disinfect surfaces
Disinfect hands

Question 4

Explain how an arteriole can reduce the blood flow into the capillaries

Answer 4

Muscle contracts and constricts lumen

Question 5

Blood vessel carrying blood at the lowest blood pressure

Answer 5

Vena cava

Question 6

Similarity and difference to a graph showing the pressure of the left and right ventricle

Answer 6

Contracts at the same time
Lower pressure in the right ventricle

Question 7

Physiological change that means there isn’t a large increase in pCO2 during exercise

Answer 7

Increase tidal volume
Same pCO2 per breath but increased volume per breath