How Does The Nervous System Help Us Respond To Changes Pt2

Question 1

What is a reflex

Answer 1

A reflex is an involuntary response to avoid harm/protect us. The only part of our CNS involves is the spinal cord. This increases the speed as we dont need to think about it

Question 2

What happens in a synapse

Answer 2

The impulse travels to the end of a neuron and then neurotransmitters are released into the synapse. Theybtravel across the synapse and interact with receptors at the post-synaptic cleft. When enough receptors are filled, the impulse continues down the neuron

Question 3

Rooting reflex

Answer 3

Stimulus: Gently touching a baby’s cheek
Response: It turns its head towards your finger

Question 4

Sucking reflex

Answer 4

Stimulus: Placing a nipple or a similar shaped object in a baby’s mouth
Response: It will cause it to suck

Question 5

Swallowing reflex

Answer 5

Stimulus: The presence of liquid such as milk in a baby’s mouth
Response: It leads to swallowing

Question 6

What is an advantage of simple reflexes

Answer 6

Because it is a reflex , the baby does it naturally and doesnt need any thinking power to do it making the whole process easier.

Question 7

Reflexes in action

Answer 7

Stimulus >Receptor>Sensory neurone>Relay neurone>Motor neurone>Effecor>Response

Question 8

What is the consequence of a broken spine

Answer 8

Impulses wouldnt be able to travel so muscles dont get a response to recat

Question 9

What is the consequence of a degenerated motor neurone

Answer 9

They would feel the pain but with no motor neurone , they wouldn’t be able to use their reflexes and move

Question 10

What is the consequence of a lack of neurotransmitter at a synapse

Answer 10

The response would be much slower and smaller (delayed reaction)

Question 11

What is the consequence of excess neurotransmitter at a synapse?

Answer 11

Exaggerated respons and a higher amout of pain. Also multiple reactions