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Chemical Reaction

the atoms and molecules inside animals rearrange themselves in processes called these.


all the reactions inside the body.

The Nervous System

the central nervous system (CNS) and the peripheral nervous system (PNS).


the brain and the spinal cord.


the nerves or neurons that connect the CNS to the rest of the body.


the big part of the brain and is responsible for complex thinking.


at the back of the brain and it coordinates movement.


at the bottom of the brain and it regulates body functions like sleep.

Cerebral Cortex

the outside layer of the cerebrum.

Corpus Callosum

the bridge that connects the right hemisphere to the left hemisphere.

left hemisphere

it controls numbers, language, symbols and good at following instructions.

right hemisphere

it processes pictures, more creative, and emotions.


which regulates emotions and bodily functions, such as hunger and body temperature.


the brain and nervous system is made up of these.

Myelin Sheath

insulates the neuron so the message does not escape.

3 types of neurons

sensory neurons, inter neurons and motor neurons.

Sensory neurons

carry information about a stimulus TO the CNS.

Inter neurons

carry messages THROUGH the CNS.

Motor neurons

then take impulse or message to effectors.


is a chemical compound that carry a signal across the junction between the neurons.


the gap between 2 neurons.

Reflex Arc

the pathway all the way from a stimulus to a response.

Limbic System

part of the brain that controls emotions.

2 types of memory

short term memory and long term memory.

2 types of human behaviour

innate and learned behaviour.

Innate behaviour

it is like instinct.

Learned behaviour

is a change behaviour learned from past experiences, like trial and error, revision and habituation.

The Endocrine System

hormones and these travel around the bloodstream.





plants don't have..

a nervous system, but they do have an endocrine system.

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