B6-Brain And Mind

Question 1

What are receptors?

Answer 1

These are cells that detect stimuli and they are found in places like ears, eyes, skin

Question 2

Name two organs that make up the central nervous system?

Answer 2

Brain and spinal code

Question 3

What do sensory neurones do?

Answer 3

Send the information along to the central nervous system from the receptors

Question 4

Where do motor neurones carry signals to and from?

Answer 4

The central nervous system sends Information to the muscles along the motor neurones

Question 5

What are effectors?

Answer 5

All your muscles and glands which respond to nervous impulses

Question 6

What is the role of the central nervous system?

Answer 6

Collects information from sensory neurones and decides what to do

Question 7

How do neurones transmit information?

Answer 7

Through electrical impulses

Question 8

What is an axon?

Answer 8

Is made from the nerves cells cytoplasm. It’s stretched out into long fibre and surrounded by a cell membrane

Question 9

What is the function of the fatty sheath surrounding the axons?

Answer 9

Speeds up electrical impulses

Question 10

What is a synapse?

Answer 10

A synapse is a gap between two neurones

Question 11

Name two different chemicals that affect the transmission of impulses across synapses?

Answer 11

Ecstasy and beta blockers

Question 12

What is a reflex?

Answer 12

Reflex are responses you don’t think about

Question 13

Describe how information travels along a reflex arc from a receptor to an effector?

Answer 13

Something stimulates pain receptors and the message travels along to the sensory neurones and then the message is passed along relay neurones. Then the message travels along a motor neurone.

Question 14

Give two ways that simple reflexes increase an animals chances of survival?

Answer 14

Reflexes in eyes and reflex to make you drop something If its hot

Question 15

What reflex did Pavlov did notice in his dogs?

Answer 15

Salivated when they see or smell food

Question 16

How did Pavlov create a conditioned reflex in dogs?

Answer 16

By making the dogs salivate when they heard the bell ring

Question 17

Describe another example of a conditioned reflex?

Answer 17

Predators avoiding brightly coloured insects

Question 18

How can new experiences increase the number of connections the brain has as a child?

Answer 18

Because the pathways in the brain that are being used won’t die off

Question 19

What happens to pathways when activities are repeated?

Answer 19

Become strengthened

Question 20

Name two things that the cerebral cortex of the brain is important for?

Answer 20

Language and memory

Question 21

Give three methods used by scientists to study the brain?

Answer 21

Can study patients with Brain damage
Electrically stimulate different parts of the brain
Scan the brain

Question 22

What is memory?

Answer 22

Memory is storage and retrieval of information

Question 23

What happens to information in short term memory that’s repeated?

Answer 23

It will move to long term memory

Question 24

Information can be received from long term memory and remembered?

Answer 24

True

Question 25

What is a stimulus?

Answer 25

Something that causes your body to react towards it eg; getting stung by a bee