Biopsychology

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  • Created by: vi15mrobe
  • Created on: 08-11-17 15:10
Central Nervous System
Consists of the brain and spinal cord and is the origin og all complex commands and decisions
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Peripheral Nervous System
Sends info to the CNS from the outside world, and trasmits messages from the CNS to muscles and glands in the body
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Somatic Nervous System
Transmits info from receptor cellls in the sense organs to the CNS. It also receives info from the CNS that directs muscles to act.
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Autonomic Nervous System
Trasmits info to and from organs. It is 'autonomic' as the system operates involuntarily. It has 2 divisions; sympathetic & parasympathetic nervous system
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Gland
An organ in the body that synthesises biochemical substances such as hormones.
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ACTH
Released by the pituitary gland, it effects the cells of the adrenal glands causing adrenaline to be released into the bloodstream.
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Adrenalin
Produced by the adrenal glands. These are part of the human's body immediate stress response. Adrenaline has a strong effect on the cells of the cardiovascular system-stimulating the heart rate, contracting blood vessels and dilating air passages.
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Endocrine System
1 of the body's major info systems that instructs glands to release hormones directly into the bloodstream. These hormones are carried to target organs in the body.
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Hormones
Biochemical substance that circulate in the bloodstream and only affect target organs. They are produced in large quantities but disappear quickly. Their effects are very powerful.
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Axon
The long projection of the neuron from the cell body.
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Synapse
The gap seperating neighbouring neurons.
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Dendrites
Brancing projections from the end of a neuron carry nerve impulses from neighbouring neurons towards the cell body.
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Terminal Buttons
Found at the end of an axon, they communicate with the net neuron in the chain across the synapse.
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Myelin Sheath
A fatty layer covering the axon which protects it and speeds up electrical transmission of the impulse.
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Motor Neurons
These connect the CNS to effectoes such as muscles and glands. SHORT dendrites & LONG axons
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Relay Neurons
These connect the sensory neurons to the motor or other relay neurons they have SHORT dendrites and SHORT axons.
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Sensory Neurons
These carry messages from the PNS to the CNS they have LONG dendrites and SHORT axons.
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Neurotransmitter
Brain chemicals reeased from synaptic vesicles that relay signals across the synapse from one neuron to another. Neurotransmitters can broadly be divided into those that perform an excitatory function and those that perform an inhibitory function.
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Inhibition
When a neurotransmitter, such as serotonin, increases the negative charge of the post synaptic neuron. THis decreases the likelihood that the neuron will fire and pass on the electrical impulse.
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Excitation
When a neurotransmitter, such as adrenaline, increases the positive of the postsynaptic neuron. This increases the likelihood that the nuron will fire and pass on the electrical impulse.
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Other cards in this set

Card 2

Front

Sends info to the CNS from the outside world, and trasmits messages from the CNS to muscles and glands in the body

Back

Peripheral Nervous System

Card 3

Front

Transmits info from receptor cellls in the sense organs to the CNS. It also receives info from the CNS that directs muscles to act.

Back

Preview of the back of card 3

Card 4

Front

Trasmits info to and from organs. It is 'autonomic' as the system operates involuntarily. It has 2 divisions; sympathetic & parasympathetic nervous system

Back

Preview of the back of card 4

Card 5

Front

An organ in the body that synthesises biochemical substances such as hormones.

Back

Preview of the back of card 5
View more cards

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