| Light | Stimulus of Eyes, Sight |
| Sound | Stimulus of Ears, Hearing |
| Particles | Stimulus of Nose, Smell |
| Particles | Stimulus of Tongue, Taste |
| Pressure and Heat | Stimulus of Skin, Touch |
| Receptors | Sense Organs |
| Stimuli | Things our sense organs resond to |
| Central Nervous System | Receptors are connected to this. |
| Brain and Spinal Cord | Main organs found in the nervous system |
| Nerves | Receptors are connected to the CNS by these. |
| Electrical Impulses | These travel down nerves. |
| Effector organs | CNS sends impuses to these. |
| Sensory | Type of neuron that goes from the sense organ to the nerve ending |
| Motor | Type of neuron that goes from cell body to muscle or gland |
| Sense organ | Sensory neuron starts here. |
| Nerve | Sensory neuron ends here. |
| Cell body | Motor neuron starts here. |
| Muscle or Gland | Motor neuron ends here. (x2) |
| Axon | Runs down the middle of a neuron |
| Myelin Sheath | Insulates Axon |
| Sensory | Neuron where the cell body is in the middle |
| Motor | Neuron where the cell body is at one end. |
| Reflexes | Things that happen but we don't think about them (e.g. when we are burnt) |
| Automatic response to a stimulus | Definition of a reflex action |
| Reflex Arc | Nervous pathway for reflexes |
| Sensory | First neurone in reflex arc |
| Relay | Second neurone in reflex arc |
| Motor | Third neurone in reflex arc |
| Synapse | Junction between neurone |
| Neurotransmitter | Chemical released from end of a neurone to stimulate another neurone to produce another electrical impulse |
| Receptor site | Where a neurone receives chemical neurotransmitters. |
| Homeostasis | Keeping conditions within the body stable |
| Cool down the body | Why does sweating occur during exercise? |
| Salt and water evaporates | How does sweating help the body during exercise? |
| To take in more air so we can respire | Why do we breathe faster during exercise? |
| Dehydration | What effect can sweating and faster breathing have on the body? |
| Physiology | Study of processes of the body |
| Impaired performance | Effect of 2% body weight lost as sweat |
| Circulatory collapse and heat stroke | Effect of 10% body weight lost as sweat |
| Glucose | Used by muscles for energy while we exercise |
| Sugars | Used in energy release during activity and an ingredient in sports drinks. |
| Water and Ions | Lost during sweating and an ingredient in sports drinks. |
| Chemical Messengers | What are hormones? |
| In response to a stimulus | When are hormones produced? |
| Blood Steam | Transports hormones to their target organs. |
| Follicle Stimulating Hormone | Hormone that stimulates devopment of an egg |
| Pituitary Gland | Where is FSH produced? |
| Fluid Filled Sac | What is a follicle? |
| Oestrogen | FSH stimulates ovary to produce this. |
| Oestrogen | Thickens uterus lining |
| Thickens uterus lining | Oestrogen causes this to happen. |
| FSH is no longer produced | Happens when Oestrogen reaches a certain level |
| LH | Hormone produced when FSH stops |
| Follicle ruptures | Effect of LH |
| Stops FSH production | Reason Oestrogen is used in contraception |
| FSH | Given at the start of IVF |
| Oestrogen | Given to mother in IVF before eggs are re-inserted |