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31 terms

Unit 2-The Nervous System

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Chemical Reaction
the atoms and molecules inside animals rearrange themselves in processes called these.
Metabolism
all the reactions inside the body.
The Nervous System
the central nervous system (CNS) and the peripheral nervous system (PNS).
CNS
the brain and the spinal cord.
PNS
the nerves or neurons that connect the CNS to the rest of the body.
Cerebrum
the big part of the brain and is responsible for complex thinking.
Cerebellum
at the back of the brain and it coordinates movement.
Brainstem
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.
Hypothalamus
which regulates emotions and bodily functions, such as hunger and body temperature.
Neurons
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.
Neurotransmitter
is a chemical compound that carry a signal across the junction between the neurons.
Synapse
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.
NS=
neurons.
ES=
hormones.
plants don't have..
a nervous system, but they do have an endocrine system.