N5 Nervous System

N5 Nervous System

Communication

THe nervous system is how you detect your enviornment, make decisions and then carry out movements

Central Nervous System

• Brain

• Spinal Cord

Sensory Neuron

Receptors on senses detect stimuli
Sensory neurons pass this infomration towards the Central Nervous System

Interneuron

- Found in the CNS
- Pass info from Sensory Neurons to Motor Neurons

Motor Neuron

Pass information from CNS to effectors (muscles or glands)

How information is passed

• Signal travles ALONG neuron as an Electrical Impulse

How information is passed

As chemicals across the synapse BETWEEN neurons

Fill in the Blanks

What is the gap bewteen neurons called?

Multiple Choice

How is infromation passed along a neuron

• as a chemical

• as electricty

• as a signal

• as an electrical impulse

Multiple Choice

Which type of neuron is found in the spinal cord?

• Sensory

• Inter

• Motor

• Effector

Multiple Choice

Which type of neuron carries information to muscle tissue

• Sensory

• Inter

• Motor

• Effector

Multiple Choice

Which type of neuron passes information towards the CNS?

• Sensory

• Inter

• Motor

• Effector

Multiple Choice

How is infromation passed bewteen neurons?

• They talk to each other

• As an electrical impulse

• As a chemical messenger

• As stimuli

Fill in the Blanks

What do the receptors in your senses detect?

Multiple Select

Select ALL of the parts of the CNS?

• The brain

• The spine

• The Spinal Cord

• Sensory Neurons

Recap - It's SIMple!

Receptors detect stimuli
Info is passed to CNS by Sensory Neurons
The info is processed in the CNS by Inter Neurons
A signal is then sent from the CNS to muscles/glands by Motor Neurons

Reflex Arc

• Stimuli

• Detected by receptors

• Info passed by Sensory neurons to spinal cord

• Inter neurons in spinal cord pass info to motor neurons

• Motor neurons pass info to effectors

• A protective response takes place

Reflex Arc

• The brain is NOT involved in a reflex arc

• THe signal only goes to and from spinal cord

• This leads to a faster response

• "The refelx arc protects the body from HARM"

• Examples: Sneeze, blink, move hand when touch very hot surface

Fill in the Blanks

the reflex arc only invloves the spinal cord so that there is a

response

Multiple Select

Tick all of the correct statments

• The refelx arc protects the body from danger

• Sensory Neurons pass message to Interneurons

• The brain sends signal to motor neurons

• Motor neurons cause a protective response by effectors

Multiple Select

Select all of the examples of a reflex arc

• Deciding to close your eyes

• Sneezing when dust gets in nose

• Quickly move hand when touch hot iron

• Blink when bright light turns on

Fill in the Blanks

the function of the reflex arc is to _______ ___ ____ ____ ____

Multiple Choice

Which neuron is found inside the spinal cord

• Sensory

• Inter

• Motor

Multiple Choice

Which neuron carries information towards the effectors

• Sensory

• Inter

• Motor

Multiple Choice

Which neuron carries information towards the CNS

• Sensory

• Inter

• Motor

Fill in the Blanks

messages are passed along neurons as ______ ______

3 parts of the brain

3 functions:

Cerebrum: Conscious thought, decisions, personality, memories
Cerebellum: Muscle coordination & balance
Medulla: Controls heart rate and breathing

CereBRUM

Sounds like drum!
Big surface at top

CerebeLLUm

think of the 2 Ls as 2 legs which you use for balance & coordination 

MEDulla

Use MED to think about meditation!

In meditation you try to consciously control your breathing & heart rate, which is normally done for you by the MEDulla

Which one cntrols balance?

Which one controls automatic systems?

Multiple Choice

Name the top largest section of brain?

• Cerebellum

• Cerebrum

• Medulla

• Spinal Cord

Multiple Choice

Name the back section of the brain?

• Cerebellum

• Cerebrum

• Medulla

• Spinal Cord

Multiple Choice

Name the bump at top of spinal cord as enters brain?

• Cerebellum

• Cerebrum

• Medulla

• Spinal Cord

Multiple Choice

Name the red part at back of the brain

• Cerebellum

• Cerebrum

• Medulla

• Spinal Cord

Multiple Choice

Which colour controls heart rate

• green

• red

• purple

• Spinal Cord

Multiple Choice

Which colour controls balance and coordination

• green

• red

• purple

• Spinal Cord

Multiple Choice

Which part of the brain controls heart rate?

• Cerebellum

• Cerebrum

• Medulla

• Spinal cord

Multiple Choice

where are you storing info on today's lesson?!

• Cerebellum

• Cerebrum

• Medulla

• Spinal cord

Multiple Choice

Which part of the brain controls balance?

• Cerebellum

• Cerebrum

• Medulla

• Spinal cord

Multiple Choice

Where do you make conscious decisions

• Cerebellum

• Cerebrum

• Medulla

• Spinal cord

Multiple Choice

Which part of the brain controls rate of breathing?

• Medulla

• Cerebellum

• Cerebrum

Fill in the Blanks

Which part of the brain controls balance & co-ordination?

Fill in the Blanks

Which part of the brain is where decisions are made, personailty and imagination are?

N5 U2 Nervous Control

The nervous system consists of central nervous system (CNS) and other nerves. 
- CNS consists of brain and spinal cord. 

Structure and function of parts of the brain — cerebrum, cerebellum and medulla. 

Neurons are of three types: sensory, inter and motor. 
Receptors detect sensory input/stimuli. Electrical impulses carry messages along neurons. Chemicals transfer these messages between neurons, at synapses.

Structure and function of reflex arc.