B3.2 Transport Systems In Plants And Animals Flashcards
What does plasma do?
Carries cells
What’s in blood?
Plasma
White blood cells
Red blood cells
Platelets
What do the white blood cells in blood do?
Identify and destroy pathogens
What do platelets in the blood do?
Involved in blood clotting and repair and regeneration of connective tissue
What do red blood cells do in a the blood?
Transport oxygen
How are red blood cells adapted?
Concave
Large SA for diffusion
Packed with haemoglobin which carries oxygen
No nucleus so more space for oxygen and haemoglobin
Explain the path of the blood through he heart?
Vena cava Right atrium Valve Right ventricle Valve Pulmonary artery Lungs Pulmonary vein Left atrium Valve Left ventricle Aorta Body
What do valves do?
Keep a one way system
Many many times does blood go through the heart in one beat?
Twice
Which side is thicker and why?
Left as it pumps to the whole body not just the lungs
What’s the system of movement of blood called?
Double circulatory system
What are the vessels called around the kidney?
Renel
What are the vessels called around the liver?
Hepatic
Does the artery have a large or small lumen and why?
Small
Keeps a high pressure so the blood goes all the way round the body and fast so there’s no need for valves
Why does the artery have thick muscle and elastic fibres?
To keep a high pressure and so it can stretch when the blood enters