The nervous system enables humans to react to their surroundings and coordinate their behaviour. Receptors detect stimuli outside the body and relay messages to the central nervous system and brain for processing. Have you ever paid attention to the messages in your body? If not, here's your chance to.
Tiny hairs on the skin can be raised and lowered by small muscles
Blood vessels in the skin can be dilated or contracted
Glands in the skin are stimulated to release greater quantities of natural oils onto the surface of the skin
Glands in the skin are stimulated to release sweat
Sensory
Relay
Motor
Axial
A hormone is used to send a message to the kidney to excrete more water
Nerve impulses from the brain are used to send a message to the kidney to excrete more water
Both of the above
No message is needed, it will happen automatically
Only the spinal cord
Only the brain
Both the spinal cord and the brain
The spinal chord, brain and relay neurones
Sensory, effector, relay, response
Receptor, relay, neurone, response
Finger, motor, sensory, receptor
Receptor, neurone, response, receptor
It is a nice temperature to be at
It is an easy temperature to maintain
When life first started, that was the temperature of the Earth
The enzymes in the body work most efficiently at that temperature
Sensory
Relay
Motor
Axial
Insulin is secreted by the liver and transported to the pancreas where it changes sugar into starch
Insulin is a catalyst that destroys glucose in the blood
Insulin is a hormone that helps to regulate the water content of the blood
Insulin is secreted by the pancreas and it stimulates cells in the liver to convert glucose into glycogen
When compared to control via the nervous system, hormones act faster but their effects last longer
When compared to control via the nervous system, hormones act more slowly and their effects last longer
The effectors of the nervous system are muscles or glands, the effectors for hormones are target cells, tissues and organs
The response of control by the nervous system is a muscle contraction or hormone secretion, the response to hormones is a chemical change in the body
Dendrite, chemical
Dendrite, electrical
Synapse, chemical
Synapse, electrical