The Nervous System

1-20-15•We have studied 7 body systems so far. Write each one and its main function.

SkeletalMuscularIntegumentaryDigestiveCirculatoryRespiratoryExcretory

1-20-15•We have studied 7 body systems so far. Write each one and its main function.

Skeletal – gives us structure/supportMuscular – protects organs/gives supportIntegumentary – protect & insulate organsDigestive – break down food into useable nutrientsCirculatory – distribute substances (like oxygen & nutrients) around the bodyRespiratory – get oxygen into the body and carbon dioxide outExcretory – get waste out of the body

1-20-15

•We have studied

1. What is the function of the Nervous System?•controls and coordinates all actions and

reactions sending information as electrical impulses.

2. Organs of the Nervous System•Brain•Spinal Cord•Nerves

3. What are the 2 parts of the Nervous System?

•Central Nervous System•Peripheral Nervous System•These 2 systems work

together

4. What are the parts of the Central Nervous System

•Spinal cord

•Brain

5. What are the 3 main parts of the brain? Cerebrum-The cerebrum fills up

most of your skull. It is involved in remembering, problem solving, thinking, and feeling. It also controls movement.

Cerebellum- The cerebellum sits at the back of your head, under the cerebrum. It controls coordination and balance.

Brain Stem-The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

Peripheral Nervous System

•Nerves – specialized cells that transmit electrical impulses (signals) throughout the body

Mike the headless chicken

2/7/14

Sit in your assigned seat.

Write the warm up question and answer.

Why was Mike the headless chicken able to survive for 4 years without his head?

Did you study last night?What is the function of the nervous system?

What are the organs of the nervous system?

What two parts is the nervous system divided into?

What are the three main parts of the brain?

6. What are the parts of the Peripheral Nervous System?

•Connects the body to the brain & spinal cord

•All other nerves that are attached to the spinal cord

7. What is a Reflex?•Involuntary, automatic response to a stimulus

•Involves a simple nerve pathway called a reflex arc

•Example: Your hand touches a hot iron, you pull away

8. What is a Stimulus-Response?

•Stimulus (stimuli)▫Anything that the body can react or respond toMay be internal or external

•Response – the reaction to stimuli

9. Fun Facts about the Nervous System:•There are more nerve cells in the human

brain than there are stars in the Milky Way.

•The left side of the human brain controls the right side of the body and vice-versa.

•As we get older, the brain loses a gram of brain mass per year.

Are you a Left brain or a right brain thinker?

Left Brain Right Brain

Uses logicDetail oriented

Facts ruleMath and science

RealisticPresent and past

SafePractical

Can comprehend

Uses feelingImagination rules

BelievesAppreciatesRisk taking

Present and future“big picture” oriented

Fantasy basedSpatial perception