Flashcards in 2 Organisation - Animals and Plants Deck (58)
What is plasma in the blood?
Yellow liquid that carries blood cells, proteins and dissolved substances around the body
What are red blood cells?
Biconcave cells that have haemoglobin - carry oxygen
Name the pigment found in red blood cells that binds to oxygen.
Which organ system transports substances to and from body cells?
State the functions of white blood cells.
Engult pathogens, produce antibodies and antitoxins
How does being biconcave help red blood cells with their function?
Increase SA:V for efficient diffusion
How is not having a nucleus good for red blood cells?
More space to pack more haemoglobin
State the function of platelets.
Name the blood vessel type that carries blood from the heart to other parts of the body.
Name the blood vessel type that carries blood from the organs back to the heart.
Name the blood vessel type that is found within organs that link arteries and veins.
State a structural difference between arteries and veins.
A: thicker walls, more elastic tissue, no valves; V: thinner walls, less elastic tissues, have valves
State a difference in the blood flowing in arteries and veins.
A: oxygenated, more nutrients, less wastes; V: deoxygenated, less nutrients, more wastes
The flow of blood in veins relies on ??????
Skeletal muscle contraction
Why can substances diffuse easily between capillaries and the cells?
Thin capillary walls (one cell thick)
What is the double circulatory system?
One part carries blood between heart and lungs; the other carries blood between heart and other organs
Name the vessels that supply oxygen to the heart muscles.
Name the large vessel that brings deoxygenated blood back into the heart.
Name the upper chambers of the heart.
Name the lower chambers of the heart.
Name the vessel that brings deoxygenated blood from the heart to the lungs.
Name the vessel that brings oxygenated blood from the lungs to the heart.
Which side of the heart has deoxygenated blood - right or left?
Describe the flow of blood as atria of the heart contract.
Blood flows from atria down to ventricles
Name the large vessel that brings oxygenated blood out of the heart to the body.
Why is the muscle wall of the left ventricle thicker than the right ventricle?
To generate more pressure to force blood all over the body (left side only to lungs)
What is the function of heart valves?
Prevent backflow of blood
Name a method to unblock a coronary artery in the heart.
Name a drug that reduces blood cholesterol levels.