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

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

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

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

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

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

Fill in the Blanks

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.