Transcript Breathe in, Breathe out… it`s a new unit! May (4+2x-3x+6x

The Sum of All Parts:
Human Body Systems
WEEKLY GOAL!
Catalyst
Why
Write in complete sentences!
Don’t talk during the Catalyst!
do you get hungry?
What happens when you get very cold?
Why?
Why do you use the restroom more when
you drink a lot of liquid?
Objectives

By the end of today, all SWBAT…
Identify
the functions of the major body
systems
Define homeostasis
Agenda
Catalyst Review
 New Unit: Body Systems!
 Scavenger Hunt
 HOMEOSTASIS
 Memory & Dominoes
 Exit Question

HOMEWORK: Body Systems Overview
Catalyst Review

Why do you get hungry?
 You’re
running low on energy and need to replace your
nutrients back to normal.

What happens when you get very cold? Why?
 You
start shivering to generate heat to get your body
temperature back to normal.

Why do you use the restroom more when you
drink a lot of water?
 Because
your body needs to get rid of the extra water
so that your fluid level goes back to normal.
New Unit: Human Body Systems &
Health

This week, we are going to talk about…
 How
we breathe, how our heart works
 How we digest food

But we’ll also learn about…
 How
we gain and lose weight
 Why exercise is ESSENTIAL!!!!!
 How humans interact with bacteria & viruses
 How we fight off disease
 SEX!!! (especially STIs and pregnancy)
Body Systems


Key Point #1: Your body is organized in this
order: cells  organs  organ systems
Your body is made of cells.
 Sometimes,
a group of cells is called tissue (such as
heart tissue instead of heart cells).


Organ = group of similar cells that do a job
Organ system = organs that work together to
accomplish a job
A Nerve Cell
Nerve Cells (AKA tissue)
Organ: the brain
The Nervous System
Small Intestine Cell
Small Intestine Cells (tissue)
Small Intestine
The Digestive System
Check for understanding!!!!


The smallest unit of living things is the ________.
Order these from smallest to largest: organ, organ
system, cell.

Describe an organ.

Describe an organ system.
Organ System Structures & Functions



Organ systems are specialized – they have a
specific function.
TEXTBOOK SCAVENGER
HUNT!!
Let’s check our
answers.
Supports the body and protects organs
Uses energy to produce movement
Control center; coordinates communcation
Distributes nutrients; removes wastes
Exchanges gases—oxygen in, CO2 out
Breaks down food and absorbs nutrients
Produces hormones
Outside barrier and regulates temperature
Eliminates liquid wastes
Provides ability to make/have children
Protects the body from disease
Nervous System
Endocrine System
Excretory System
Muscular System
Reproductive System
Integumentary System
Skeletal System
Immune System
1.
2.
3.
4.
5.
6.
Skeletal System
Muscular System
Nervous System
Circulatory System
Respiratory System
Digestive System
Bones
muscles
Control center
Pumps blood
breathing
Food for energy
Endocrine System
hormones
8. Integumentary System skin
peeing
9. Excretory System
10. Reproductive System Making children
Fights disease
11. Immune System
7.
But what’s the point?
All of your body
systems work
together to do
ONE THING…
Homeostasis

Key Point #2: Homeostasis is the process of
maintaining a stable internal environment.
 Stable
= does not change (normal, even, balanced)
 To function properly, your body needs to have a stable…
 Oxygen
level
 Temperature
 Food intake
 Amount of water

KEEP THIS CONCEPT IN MIND ALL UNIT LONG. Every
body system works to keep your internal environment
stable.
Examples

How does your integumentary system maintain
homeostasis?
 Break
it down: What does the system do? What
organs make it up?
 The
integumentary system regulates body temperature
through the skin and sweat glands. It keeps you at a
stable (or normal) temperature when you get hot.
Examples

How does your respiratory system maintain
homeostasis?
 Break
it down: What does the system do? What
organs make it up?
 Your
respiratory system exchanges gases. It maintains
homeostasis by making sure your oxygen levels are
stable.
Examples

How does your circulatory system maintain
homeostasis?
 Break
it down: What does the system do? What
organs make it up?
 The
circulatory system distributes nutrients to, and
removes wastes from, cells. It also helps to carry oxygen
and water to cells. This helps maintain homeostasis by
keeping oxygen and water levels stable.
Remember the Catalyst?

Why do you get hungry?
 What
body system can maintain homeostasis and how
does it do it?
 Nervous
system
 Oxygen level?
 Temperature?
 Food intake?
 Amount of water?
Remember the Catalyst?

What happens when you get very cold?

What body system(s) can maintain homeostasis and how does
it do it?
 Integumentary
system
 Musclar
system
 Circulatory system
 Oxygen level?
 Temperature?
 Food intake?
 Amount of water?
Remember the Catalyst?

Why do you use the restroom more when you drink
a lot of water?
 What
body system can maintain homeostasis and how
does it do it?
 Excretory
 Oxygen level?
 Temperature?
 Food intake?
 Amount of water?
Now you Try

Memory and Dominoes!!!
Key Point Wrap-Up


Key Point #1: Cells  Organs  Organ systems.
Key Point #2: Homeostasis is the process of
maintaining a stable internal environment.
 STABLE! (normal, even, level, or balanced)
 Oxygen
 Organ
levels, temperature, food intake, amount of water
systems work together to maintain
homeostasis.
Exit Questions
1. Which of the following is
the correct function of the
excretory system?
A. To eliminate wastes
B. To control all the body’s
function
C. To distribute nutrients
D. To support the body and
protect organs
Write in complete sentences!
Don’t talk during the Exit Question!
2. Which of the following is made by
the endocrine system?
A. Energy
B. Urine
C. Hormones
D. Blood
3. Describe what your body systems
have to do to maintain
homeostasis. (Be sure to include
what has to stay stable!)