Using your prior knowledge EXPLAIN in multiple sentences how the game “Simon Says” works?

Homeostasis: RegulationHow does the nervous system help us maintain homeostasis?

The game Simon says works because ______________________________

HINT ->

How does the nervous system maintain homeostasis? The stable internal

balance of an organism that ensures survival

The process in which an organism controls and coordinates all its activities

•Responsible for regulation

•Control and coordinates by sending messages.

•Consists of :

BrainSpinal CordNerves

How does your brain work?

This cartoon is implying that ____________________________________________________________________________

Homeostasis: Regulation

These circles are not moving, your brain is making them appear to move. Try focusing

on one circle. It will stop moving.

•The control center•Protected by the skull

•Made up of approx. 1 trillion neurons•Divided into two

hemispheres

Right

Left •Each hemisphere controls the opposite part of the body.Ex. The Left hemisphere

controls that right side of the body

Look at the chart and say the color, NOT the word

Your right brain tried to say the color,

but your left brain was reading the word.

A look inside!!!!

The brain consists of three major

parts:

1.Cerebrum

2.Cerebellum

3.Medulla oblongata

•The largest part of the brain•Located on both the right and left hemisphere

•The center for thought, memory, learning, senses and voluntary movements.

activity

Read this sign

•Located below and behind the cerebrum•Coordinates all motor activities

•Maintains the body’s balance

Located at the base of the brain and spinal cord

Controls involuntary actionsSuch activities include __________________________________________

Heart rateBreathing rate

Peristalsis

If a human system fails to function properly, what is the most likely

result?

1. a stable rate of metabolism 2. a disturbance in homeostasis 3. a change in the method of cellular

respiration 4. a change in the function of DNA

Two types of human cells are shown in the diagram below.

Cell A causes the cells at B to contract. This activity

would be most useful for1. lifting a book from a bookshelf 2. coordinating the functions of organelles 3. digesting food in the small intestine 4. carrying out the process of protein synthesis

CEREBRUM

CEREBELLUM

MEDULLA

Two types of human cells are shown in the diagram below.

Cell A causes the cells at B to contract. This activity

would be most useful for1. lifting a book from a bookshelf 2. coordinating the functions of organelles 3. digesting food in the small intestine 4. carrying out the process of protein synthesis

If a human system fails to function properly, what is the most likely result?

1. a stable rate of metabolism 2. a disturbance in homeostasis 3. a change in the method of cellular

respiration 4. a change in the function of DNA

Does this image appear to be moving?

• It’s NOT!

• Just kidding, this one is actually moving

Final Summary

Homework:Homework: Nervous system Handout

Imagine you’ve stepped off a curb and a car doing 70 mph,

comes out of nowhere. Identify 2 human body

systems at work to help you respond to this stimuli. How do they work together to help you maintain homeostasis???

•A cluster of nerves that run along the back

•Protected by the

______________ Vertebrae (backbone)

A group of nerve cells (neurons) that carries the

messages known as impulses.

Structural unit of the brain and

nervous system which conduct

information and carry messages throughout an

organism.

How do we relay the How do we relay the messages messages

throughout our throughout our bodies to produce an bodies to produce an

action?action?

Topic: Nervous SystemTopic: Nervous SystemAIM: How do nerve impulses AIM: How do nerve impulses reach an adjacent nerve cell?reach an adjacent nerve cell?

DO NOW:DO NOW:Identify the 3

sections of the brain

describe their function

Specialized structures that are sensitive to stimuli

physical or chemical changes within or outside an organism that cause a response

Ex. Eyes, ears, skin, nose

Specialized structure that responds to commands of the

nervous system Ex.Ex. Muscles, Glands, Organs

• One microscopic nerve cell• Basic unit of the

nervous system

•There are 100 billion neurons in the brain

3 Types of

Neurons• Found in receptors

(sense organs) • Receive stimulus • Send impulses

from receptors to the spinal

cord and brain.

1. Sensory Neurons:

• Found in the spinal cord & brain.

• Receive impulses from sensory neurons

• Interpret “process” stimulus

• Send response command to the motor neurons

2. 2. Inter-NeuronsInter-Neurons:

• Receives the impulses from the inter-neuron,

• Sends response impulse to the effectors.

3. 3. Motor NeuronsMotor Neurons:

Involuntary sequence of events starting from the stimulus until there is a

response.

tester

Gap/space between the axon terminals of one neuron and the dendrites of the next

S Y N A P S E

Neurotransmitters Chemical messengers that send the impulse across the synapse

Examples:1.acetylcholine2.Dopamine