Nervous System

Question 1

Coordinator
What does it do?
What’s the difference between white matter and grey matter?
What is a pathway with one synapse called? More than one?

Answer 1

Receives information,interprets,processes and sends to appropriate part of the body
White is myelinated grey is not
Monosynaptic pathway
Polysynaptic pathway

Question 2

What is the spinal cord?
What does it run along?
What protects it?

Answer 2

Column of nervous tissue
Back
Vertebral column

Question 3

Reflexes 
 What's a reflex response?
 What's  a simple reflex?
 Why is brain not usually involved in response?
 What can the brain sometimes do if necessary?
 What's the purpose of many reflexes?
 What can they also help however?
 What goes straight to the brain?
 When are they effective from?

Answer 3

Rapid automatic response to a stimulus 
Communication between peripheral nervous system and spinal cord 
To prevent becoming overloaded with situations that are the same 
Override 
Protection 
Complex muscular actions 
Reflexes in the head 
Birth

Question 4

Reflex Arc
What is it also known as?
What is the sequence?
What does each of these do?

Answer 4

Receptor-sensory-relay-motor-effector
Receptor-detects stimulus and converts to electrical impulse
Sensory neurone-carry impulse from receptor to relay neurone
Relay neurone-carry impulse from sensory neurone to motor neurone
Motor neurone-carry impulse from motor neurone to effector
Effector-carries out response

Question 5

Where is the relay neurone?

Answer 5

In the CNS

Question 6

Knee jerk
What does it help?
What is the stimulus?
What are the receptors and what do they do?
What is the coordinator and what does it do?
What’s the effector and what does it do?
What’s the response?

Answer 6

Movement of leg
Tap on patellar tendon causing front thigh muscle to stretch
Stretch receptors in the muscle-detect and convert to electrical stimulus
Spinal cord interprets and processes info send to effector
In thigh muscle so leg kicks forward
Lower leg kicks forward

Question 7

What neurones does a Monosynaptic pathway include?

Answer 7

Sensory and motor

Question 8

From where is information detected?
What are electrical impulses passed along? To? What’s happens to them there?
What is info then sent to? Via what? To what? Which is a what?

Try and write sequence of events without questions

Answer 8

Environment
Nerve cells, brain/spinal cord, there interpreted
Appropriate part of body , more nerve cells, effector, muscle or gland