Topic 8 Exchange And Transport Flashcards
What is the artery
Where the blood goes away from the heart
What is a vein
A vessel that transports blood to the heart
What does the pulmonary artery go?
To the lungs
Why does the left part of the heart have a stronger wall
It needs more energy to pump to the rest of the body
Why do they call the heart the double pump
It’s pumping to things in one, the pulmonary artery pumps blood to the lungs, the aorta pumps blood to the rest of the body
What is cardiac output
Stroke volume * heart rate
What is the job of the red blood cell
Transports oxygen around the body
Why does the red blood cells don’t have a nucleus
It contains haemoglobin instead to collect oxygen
Why does the red blood cell have a disc shape
It is bio concave so it has a larger surface area to collect more oxygen
How are the alveoli specialised
They are one cell thick so it’s easy for the oxygen and carbon dioxide to diffuse through the wall in and out
What is the job of the white blood cells
Phagocytes- engulf pathogen
Lymphocytes- creates antibodies
Equation for aerobic respiration
Glucose + oxygen -> Carbon dioxide + water
Differences between aerobic and anaerobic respiration
Aerobic occurs in the presence of oxygen
Anaerobic respiration occurs in the absence of oxygen
Aerobic Found in all higher plants and animals
Anaerobic Usually found in microorganisms
Aerobic respiration occurs in the mitochondria
Anaerobic occurs in the cytoplasm
