Receptors - cells that can detect changes inside or outside the body
The Central Nervous System - CNS - the spinal cord and the brain
Effectors - organs in the body that cause a response - muscles/glands
Sense organs - organs that contain receptor cells
Stimuli - changes that receptor cells detect
Neurones - individual nerve cells specialised to transmit electrical impulses
Nerves - bundles of neurones that connect receptors and effectors to the CNS
Synapse - the gap between the two ends of two neurones
Chemical transmitters - chemicals that pass across a synapse and cause an electrical impulse to be generated in the next neurone
Voluntary/Reflex actions...Sensory/Relay/Motor neurones carry impulses.
The liver stores glucose and releases it when it is needed.
The pancreas releases insulin and glucagon.
The digestive system absorbs glucose into the blood.
Anti-Diuretic Hormone (ADH) - secreted from pituitary gland - transported in blood to kidneys - causes kidney to re-absorb more water into the blood if increased, causes them to leave more water in the urine if decreased.
Follicle Stimulating Hormone (FSH) - pituitary gland - causes an egg to mature in an ovary; stimulates the ovaries to produce oestrogen.
Luteinising Hormone (LH) - pituitary gland - stimulates the release of an egg from an ovary
Oestrogen - ovaries - inhibits further production of FSH; stimulates the pituitary gland to release LH; causes the lining of the womb to repair and thicken.