Biopsychology

Question 1

What is the CNS made of?

Answer 1

brain
spinal cord

Question 2

function of CNS?

Answer 2

Primary internal communication system. Receives information from the senses and controls the behaviour and regulation of the body’s psychological processes

Question 3

function of the brain?

Answer 3

The brain receives information from sensory receptors and sends messages to muscles and glands. Centre of all conscious awareness and is divided into different lobes with different functions

Question 4

function of spinal cord?

Answer 4

Extension of the brain that is responsible for reflex actions. It allows the brain to monitor processes such as breathing and to control voluntary movements

Question 5

Function of the peripheral system?

Answer 5

To connect the brain and spinal cord to the rest of the body and external environment. Transmits information to and from the CNS

Question 6

Somatic nervous system?

Answer 6

Controls voluntary movements, transmits and receives messages from the senses and it is involved in reflex actions without the involvement of the CNS so the reflex can occur very quickly

Question 7

What do sensory nerve pathways do?

Answer 7

Bring information to the CNS from sensory receptors, dealing with touch, pain and pressure etc.

Question 8

What do motor nerve pathways do?

Answer 8

Control bodily movement by carrying instructions towards muscles.

Question 9

Function of autonomic nervous system?

Answer 9

Regulates involuntary actions such as bodily arousal, body temperature etc.

Question 10

Function of sympathetic nervous system?

Answer 10

Involved in responses which help us deal with emergencies. Slows bodily processes that are less important in emergencies, Eg. digestion.
Leads to an increase in arousal. Eg : incr heart rate and bp.

Question 11

Function of parasympathetic nervous system?

Answer 11

Relax the individual after the emergency has passed. Decreased arousal.
Eg. slows heartrate and decr bp.

Question 12

sensory neurons?

Answer 12

convey info ab sensory stimuli

Question 13

Motor neurons?

Answer 13

Convey instructions for physical operations

Question 14

Relay neurons?

Answer 14

Connect different parts of the CNS

Question 15

excitation?

Answer 15

When a neurotransmitter increases the positive charge of a postsynaptic neuron

Question 16

inhibition?

Answer 16

When a neurotransmitter increases the negative charge of the post synaptic neuron

Question 17

How does electric transmission occur?

Answer 17

When a neuron is in its resting state, the inside of the cell is more negatively charged. When a neuron is activated the inside of the cell becomes briefly +’vly charged.
causing an ACTION POTENTIAL to occur.