National 5 Biology Unit 2 Key Area 6

upper, small chambers of the heart, blood enters via veins

• heart

• atrium

• ventricle

• aorta

transported in blood in mammals

• nutrients

  oxygen

  carbon dioxide

• nutrients

  amino acids

  carbon dioxide

• starch

  oxygen

  carbon dioxide

• protein

  oxygen

  nitrogen

transport oxygen; are specialised by being biconcave in shape, having no nucleus and contain haemoglobin

• capillaries

• white blood cells

• red blood cells

• lymphocytes

molecule that carries oxygen in red blood cells

• antibody

• carbon dioxide

• phagocyte

• haemoglobin

takes oxygenated blood to the lungs from the right ventricle

• pulmonary vein

• aorta

• pulmonary artery

• vena cava

cells found in blood, involved in defence of the body

• red blood cells

• plasma

• oxyhaemoglobin

• white blood cells

type of white blood cell which undergoes phagocytosis to engulf pathogens

• pathogen

• antibody

• lymphocyte

• phagocyte

supplies heart tissue with blood

• coronary capillaries

• coronary arteries

• coronary veins

• coronary valves

substance containing plasma, white blood cells, red blood cells, and transport nutrients, oxygen & carbon dioxide

• plasma

• capillary

• vein

• blood

returns oxygenated blood from the lungs to the left atrium

• pulmonary vein

• pulmonary artery

• vena cava

• aorta