Circulation Flashcards
What is the function of the coronary arteries?
to provide heart tissue with oxygen for respiration, which releases energy for the heart muscle to contract
What is a system?
A group of organs working together
Where is bile produced and where is it stored?
produced in the liver
Stored in the gall bladder
What are 2 functions of bile?
emulsify fat
Neutralise stomach acid before food moves into the small intestine
Can you name 2 environmental conditions that cause an enzymes active site to change?
temperature and ph
How do you rearrange the equation to calculate actual image size?
actual image size= image size/magnification
What is the red pigment that blood cells contain?
hemoglobin
What are the 3 digestive enzymes and what do they break down?
lipase-lipids to 3 fatty acids and glycerol
Amylase-starch to maltose and glucose
Protease-breaks down protein into polypeptides broken by trios in into amino acids
Carbohydrase-carbohydrates
What is the pathway of air from the atmosphere to the blood?
nose/mouth ->trachea ->bronchi ->bronchioles ->alveoli ->blood
What is the function of the red pigment in blood?
bind with oxygen and transport it to the respiring cells
What are the upper and lower chambers of the heart?
upper - atria
Lower - ventricles
What is an adaptation of each blood vessel?
Capillary- thin walls, covers larger surface area
Artery- elastic walls for vasoconstriction, and high elasticity to maintain high pressure between pump cycles
Veins- they have valves which prevent blood from travelling backwards when there is low pressure
What is a tissue?
A group of specialised cells working together
