B11

Glands which secrete chemicals(1) Directly into bloodstream(1) Carried to a target organ producing an effect(1) slower but acts for longer than the nervous system

Anti diuretic hormone(ADH):(kidney) • Controls water levels in the blood Thyroid-stimulating hormone:(Thyroid) • Thyroid gland secretes thyroxine which controls metabolic rate LH:(ovaries) • stimulates egg release and progesterone production FSH:(ovaries) • causes egg to mature and produce oestrogen Prolactin:(breasts) produces milk

1) Person eats 2) Increases glucose levels 3) Pancreas releases insulin 4) Removed from blood and into cells 5) stores in liver and muscles where glucose is converted into glycogen 6) when glucose levels too low 7) glucagon converts it back to glucose 8) enters directly back into the bloodstream

• Pancreas fails to produce enough insulin • leads to uncontrolled HIGH blood-glucose levels Treated with— insulin injections

• body cells no longer respond to insulin • risk factor= obesity Treated— controlled carbohydrate diet Exercise

HIGH = not enough insulin LOW = not enough glucagon Possible topics: respiration,the blood,negative feedback,hormones

Auxin—TIP of the shoot Auxin—moves to shaded side Auxin—cell elongation USES: Weed killers Rooting Powders Promoting growth in tissue culture

Auxin—TIP of the ROOT Auxin—moves to root facing forwards gravity(on Earth thats down) Auxin—stops cell elongation so roots grow down

Ends seed dormancy Promote Flowering Increase fruit size(plant growth)

Controls cell division Ripening of fruits Helps flowers open Dropping of leaves Used in storage and transport

FED FSH is produced MONKEYS Matures eggs OPEN Oestrogen secreted THEIR Thickens and grows uterus lining LUNGS LH lvls rise so egg is released PROUDLY Progesterone secreted IN SPITE OF Inhibits production of FSH and LH PANDAS CRYING progesterone levels crash as egg not fertilised so uterus sheds.

Barrier= condoms and diaphragm Contraceptive pill= oestrogen inhibits FSH Spermicide= kills sperm Abstinence Sterilisation/Vasectomy= permanent surgery Implant= slow release progesterone

• giving mother FSH and LH to mature some eggs • Egg and Sperm collected in laboratory and fertilised • Embryo formed • when tiny balls of cell, embryo inserted into mothers womb for further development