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Chemicals
________ called neurotransmitters cross the synapse and communicate messages from one neuron to the next.
Smell
________: The nose contains chemoreceptors that send a message via the olfactory nerve to the brain.
Positive feedback
________: Only decreases /Increases and will have more and more or less and less.
Glycogen
________ is broken down to form glucose.
Dendrite
________: receive messages from other neurons and pass the message on to the soma.
Insulin
________ works on target cells in your liver.
stimulus
Once the ________ is detected by the receptor a message is sent from the receptor to the brain.
Nervous system
________: responsible for all we think, do, and feel.
Hippoampus
________: creates new long term memories.
Tissue
________: A collection of similar cells that perform a particular function.
Taste
________: Chemoreceptors in the tongue recept ________.
better focus
It can promote alertness, ________ and concentration.
Stimuli
________: anything your body needs to respond to.
Sense organs
________ are used to detect stimuli (such as light, sound, touch, taste and smell) in your environment.
blood sugar levels
Regulating glucose (________) in your body involves negative feedback.
Hormones
________ are made by glands and released into your blood stream.
endocrine system
Your ________ uses chemical messengers called hormones.
Neurotransmitters
________ are chemicals involved in passing messages between your neurons.
Negative Feedback
________: Something that will go up and down and try to stay in an optimal range.
particular facial expression
It may sense a(n) ________ or tone as being threatening, or it may detect an event that was previously tagged as being a negative experience.
Dopamine levels
________ can be depleted by stress or poor sleep.
internal environment
Any change (stimuli) in the ________ needs to be detected (by receptors) so the body can respond.
Receptors
________: Identify changes inside or outside the body.
Peripheral nervous system
________- made of all other nerves in the body.
Insulin
________ triggers the liver to uptake glucose and store it for later.
Cells
The smallest structural unit of living organisms
Organs
Different types of tissues grouped together to perform a particular function
System
Different organs working together to achieve a specialized function to keep an organism working
Tissue
A collection of similar cells that perform a particular function
Stimuli
anything your body needs to respond to
Receptors
Identify changes inside or outside the body
Effectors
receive messages from the brain e.g
Negative Feedback
Something that will go up and down and try to stay in an optimal range
Positive feedback
Only decreases/Increases and will have more and more or less and less
Chapter 2.3
Nervous System
Nervous system
responsible for all we think, do, and feel
central nervous system
made of the brain and spinal cord
peripheral nervous system
made of all other nerves in the body
Neurons
specialised cells
Dendrite
receive messages from other neurons and pass the message on to the soma
Soma
Cell body, contains the nucleus
Nucleus
Cell control centre
Axon
carries electrical message from the soma to the axon terminal
Axon terminal
The end of the axon, release chemicals called neurotransmitters, into the synapse
Synapse
The space between neurons
Chapter 2.4
Getting the message
Thermoreceptors
Temperature
Mechanoreceptors
Pressure
Chemoreceptors
Nose and Taste buds
Photoreceptors
light
Noiciceptors (pain receptors)
pain
Smell
The nose contains chemoreceptors that send a message via the olfactory nerve to the brain
Taste
Chemoreceptors in the tongue recept taste
Chapter 2.5
The brain
Cerebrum (including the cerebral cortex)
thinking and planning
Thalamus
filters sensory information
Hippoampus
creates new long term memories
4 Lobes
(there are 8 lobes in total, 4 in each hemisphere
Frontal
movement
Parietal
sensation of touch
Occipital
vision
Temporal
sound/hearing
Chapter 2.6
Endocrine System
Influences
water balance in the body, growth
Chapter 2.8
The Brain and Emotions
Fight or flight response
when you feel angry, your hypothalamus responds by sending messages to your pituitary gland to instruct your adrenal glands to release adrenaline
Note 
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