Biopsychology Flashcards Preview

Psychology paper 1 > Biopsychology > Flashcards

Flashcards in Biopsychology Deck (24):
1

The nervous system

Biological information highway responsible for controlling all the biological processes and movement in the body

2

Central nervous system

Centre of the nervous system, consists of brain and spinal cord
Responsible for receiving and interpreting signals from the peripheral nervous system and also send out signals via nerves

3

Peripheral nervous system

Made up of neurons including sensory, motor and relay neurons
The peripheral nervous system is divided into the somatic and autonomic nervous system

4

Somatic nervous system

Controls muscle movement and receives messages from the sensory receptors

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Autonomic nervous system

Governs all vital bodily functions such as breathing, heart rate and digestion
Further broken down into sympathetic and parasympathetic systems

6

Sympathetic system

Involved in responses to help us deal with emergencies, releasing energy
Often called 'fight or flight' response. Increasing heart rate or blood pressure, pupils may dilate and hair stands up

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Parasympathetic system

Relaxes a person once the emergency has passed. Slows heart rate down and reduces blood pressure often called rest and digest

8

Nerves/ neurons

Receive information and transmit it to other cells

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Sensory Neurons

Pick up information from the environment

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Motor neurons

Transmit signals from the brain helping muscles function

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Relay neurons

Connect sensory and motor neurons, they send messages to where they need to go

12

Synaptic transmission

The process of neurons communicating with each other and transmitting messages from one neuron to the next

13

Outline the process of synaptic transmission

Neurotransmitters are Carried in synaptic vesicles when electrical signals are released at the presynaptic terminal it triggers the release of the neurotransmitters.
The neurotransmitters then diffuse across the synapse to the next Neuton which is the postsynaptic receptor site

14

Neurotransmitters have what effect on the next neuron

Excitatory or inhibitory

15

Excitation

When a neurotransmitter increase the positive charge of the postsynaptic neuron and increases the likelihood that the neuron will fire and continue to send a signal

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Inhibitory

Increases the negative charge of the postsynaptic neuron and decrease the likelihood that the neuron will fire and continue to send a signal

17

Adrenaline causes

Excitation

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Serotonin causes

Inhibition

19

The endocrine system

Works along side the nervous system to control all vital bodily functions

20

How the endocrine system works

Works much slower then the nervous system but has very powerful effects .
Had a series of glands which release the chemicals known as hormones, the major gland is the pituitary gland

21

Pituitary gland

Sometimes known as the master gland. Controls the release of hormones from all other glands in the body

22

Adrenal gland

An important part of the fight or flight response as it facilitates the release of adrenaline

23

Testes

Sex hormone, they facilitate the release of testosterone

24

Ovaries

Sex hormone, they facilitate the release of oestrogen and progesterone