cv/ circularitory system

Where does Right ventricle pump blood to?

Lungs

where does left ventricle pump blood to?

Around body

Arteries

Carry blood away from heart

Vein

Carry blood back to heart

Capillaries

Branch from arteries and connect back to vein

Which side is deoxygenated blood and which is oxygenated?

D- left O- right

which four components make up the blood?

Plasma - carry rest

Platelets- clot blood

red blood cells - carry oxygen

White blood cells- fight disease

What causes coronary heart disease?

Faulty valves- constrict blood flow

Effect on lifestyle on non communicable disease

Alcohol- damage to liver + brain , slow reaction

Smoking , obesity etc

Cancer happens when…

Abnormal cells divide

Benign tumour

Not harmful, don’t spread

Malignant tumour

Dangerous, spread

Blood glucose maintenance

Insulin produced when sugar goes in, reduces blood glucose if gets too high

When in glucagon released?

When sugar is gone, increases blood glucose if gets too low

Diabetes type 1

Pancreas doesn’t produce enough insulin, blood levels are uncontrollably high, treated with insulin injections

Type 2 diabetes

Obese at risk, controlled by exercise and limiting carbs

Menstrual cycle

1. Uterus lining breaks down

2. Lining builds up again , FSH causes egg to mature in ovaries

3. LH causes egg to be released by ovary

4. If egg isn’t fertilised oestrogen + progesterone concentration drops causing lining of uterus to break down (restart cycle)

FSH

Produced in pituitary gland, causes egg to mature

Oestrogen

Produced in ovaries, grows uterus lining

LH

Produced in pituitary gland, stimulates release of egg

Progesterone

Produced in ovaries, maintain uterus lining