Biopyschology

Question 1

What is definition of a nervous system?

Answer 1

A specialised network of cells which collect, process and respond to environmental stimuli. It regulates internal bodily functions.

Question 2

What is the somatic nervous system?

Answer 2

It’s a part the peripheral nervous system that conrils muscles movements and recievew information from sensory receptors.

Question 3

Explain what the autonomic nervous system is

Answer 3

It governs the vital functions of the body, such as breathing, heart rate and digestion

Question 4

What is the endocrine system?

Answer 4

A network of hormone production and control many parts throughout the body

Question 5

What is a neuron?

Answer 5

Nerve cells which form the foundations of the many complex communication systems in the body

Question 6

What is a synapse?

Answer 6

The gaps between neurons through which information is shared (between an axon terminal and a dendrite)

Question 7

What does the central Nervous system (CNS) consist of?

Answer 7

The brain and the spinal cord

Question 8

What does the peripheral nervous system (PNS) consist of?

Answer 8

Nerves

Question 9

In the PNS Sytem it is split into two systems, what are they?

Answer 9

Autonomic and somatic

Question 10

The Brain is the centre of all _______ __________

Answer 10

Conscious, awareness

Question 11

The spinal cord is an _______ of the brain, and is responsible for ______ actions

Answer 11

Extension
Reflex

Question 12

What is the endocrine system?

Answer 12

Controls vital functions in the body, very slow compared to the nervous system

Question 13

What is The fight or flight response?

Answer 13

When a stressful event occurs, the hypothamulus in the brain triggers a ‘panic button’ in your autonomic nervous system. It’s caused the nervous system to change from a parasympathetic state to a sympathetic state

Question 14

Sympathetic state (ready), what 3 things happen?

Answer 14

1) heart rate increases
2) breathing rate increases
3) pupil dilation increases

Question 15

Parasympathetic state (chill) , what 3 things happen?

Answer 15

1) heart rate decreases
2) breathing rate decreases
3) pupils relax

Question 16

A neuron consists what?

Answer 16

A soma, dendrites, axons and axon terminals

Question 17

A synapse contains what?

Answer 17

Pre-synaptic neuron, vesicles, neurotransmitters, ligon-gated Receptors

Question 18

What is a sensory neuron?

Answer 18

Neurons that carry messages from the PNS to the CNS

Question 19

What is a relay neuron?

Answer 19

They connect the sensory neuron and motor neurons or other relay neurons

Question 20

What is a motor neuron?

Answer 20

These connect the CNS with effectors such as muscles

Question 21

The knee-jerk reflex is an example of a ______ arc

Answer 21

Reflex

Question 22

A Stimulus, such as a hammer, hits the knee. This is detected with sensory organs In the ____________ _________ ________, which convey a message along a sensory neuron

Answer 22

prepherial nervous system

Question 23

The message then reaches the _________ __________ _______, where is connects with a ______ _____, this then transfers the message to a motor neurone, which the carries the message to an effector, such as a muscle, which causes the muscle to contract and, hence, cause the knee to move or jerk

Answer 23

Central Nervous Sytem, relay neurone

Question 24

What is excitation?

Answer 24

It increases the chance of a post synaptic nerve achieving its action potential by making it more positively charged

Question 25

What is inhibition?

Answer 25

It decreases the chance of a post synaptic nerve achieving its action potential by making the neurone more negatively charged