Transcript SC.5.L.14.1-Body Organsx

Science Focus Lesson
SC.5.L.14.1
Body Organs
Polk County Public Schools
SC.5.L.14.1
Benchmark: Identify the organs in the human body and
describe their functions, including the skin, brain,
heart, lungs, stomach, liver, intestines, pancreas,
muscles and skeleton, reproductive organs, kidneys,
bladder, and sensory organs.
Essential Question:
What are the organs in the human body, and
what are their functions?
Vocabulary:
organ, digestion, nutrients, wastes
What is an organ?
Your body is made of trillions of
cells.
Cells are grouped together to form
tissues.
Tissues form organs.
Each organ performs a different
function for your body, and keeps
you alive and healthy.
There are two organs in your body that
work in systems to help your body move.
They are your skeleton and your
muscles.
Besides helping your body move, your
skeleton also has other functions.
 It supports your body, and gives it shape.
 It protects your internal organs, like your brain, heart,
and lungs.
 It stores substances that are important to your body.
 It makes red blood cells that fight germs.
Muscles are responsible for every
movement your body makes.
 Muscles move your bones.
 Muscles make your heart beat.
 They make you breathe.
 Even speaking, digestion, and the pupils of your eyes
are controlled by muscles.
Summarizing
Talk to your shoulder partner about how your
skeleton and muscles help you to move your
body.
Organs for digestion
 There are organs in your body that
are responsible for digestion.
 Digestion is the process your body
goes through, to break down food
into nutrients that your body
needs.
Stomach
•When you eat food, it goes from your mouth, through
the esophagus, and into your stomach.
•The muscles in your stomach churn the food and mix
it with special digestive juices.
Liver and Pancreas.
 Your liver makes a digestive juice called bile.
 Your pancreas makes other kinds of digestive
juices.
 All of these digestive juices pass through a tube in
your small intestine.
Small Intestine
 The small intestine uses the digestive juices from the
liver and pancreas and finishes digesting the food.
 Nutrients from this digested food move into your
blood.
 Materials that your body does not need are moved into
your large intestine.
Large Intestine
 Your large intestine removes water from the material
sent by your small intestine.
 The water moves into your blood.
 The solid wastes move into your rectum, and out of
your body.
Summarizing
Write in your science
notebook about an organ
that is involved in
digestion.
Organs for Waste Removal
These organs are the
kidneys, bladder, skin, and
lungs.
Kidneys
Blood passes through your kidneys.
Wastes carried in your blood collect in
the kidneys and form urine.
Bladder
Your bladder collects and stores
urine until you release it.
Skin
 Skin is the largest organ in your body
 Skin is the outer covering that protects your
other organs and tissues.
 Water and wastes leave your skin in
perspiration (sweat).
Lungs
 Your blood travels through blood vessels, to your
lungs.
 The carbon dioxide and water leave the blood and
enter your lungs.
 The liquid water changes to water vapor.
 Every time you breathe out, carbon dioxide gas and
water vapor leave your body.
Summarizing
Talk to your shoulder
partner about the organs
that are responsible for
moving waste out of your
body.
Heart
 Your heart is the size of your fist.
 It pumps blood through your blood vessels to all parts
of your body.
Brain
 Your brain has 3 main parts—cerebellum, cerebrum,
brain stem
 It coordinates movements of muscles and helps you
keep your balance.
 Controls body movements that you decide to make,
learning, thinking, memory, and imagination
 Controls breathing, heartbeat, movements inside your
digestive system
 Your brain controls NEARLY EVERYTHING that goes
on in your body!
Sensory organs
 Your sensory organs are your eyes, ears, nose, tongue,
and skin
 Their job is to get information from the environment,
(through your senses) and send it to your brain.
Summarizing
Answer this question in
your science notebook:
What are your sensory
organs, and what are
they responsible for?
Guided Practice
What is an organ?
A. A group of bones that help you move.
B. A group of tissues that perform functions for your
body.
C. Something used to play music
D. A group of cells that carry out a function
Groups of cells are called tissues, and groups of
tissues are called organs. Each organ in your
body performs a different function.
The heart is an organ that is made mostly of
muscle tissue and nerve tissue. What is the main
function of the heart?
A. To pump blood throughout your body
B. To take in oxygen from the air
C. To keep your body from getting dehydrated
D. To soak up nutrients from your food
The main function of your heart is to pump blood
throughout your body!
Tommy is doing a report. He has researched
information about the skeletal system. Which of
the following is a fact he could have found about
the function of a skeleton?
A. The skeleton supports your body and gives it
shape.
B. The skeleton protects your internal organs.
C. The skeleton allows you to move when muscles
pull on bones.
D. All of these are facts about the skeletal system.
Your skeleton does all of these things for your
body, and more. It also stores important
substances for you body, such as calcium, and
makes red blood cells that carry oxygen, and
white blood cells that fight germs!
Summarizing
Answer this question in your Science
Notebook.
What are some of the organs of
the human body, and what are
their functions?
Check Your Understanding
1. What organs in your body are responsible
for your heartbeat, breathing, and causing
parts of your body to move.
a.
b.
c.
d.
muscles
liver and gall bladder
lungs
skin
Check Your Understanding
2. During digestion, food moves from your
mouth, down your esophagus, and into
your stomach. Which of the following is a
function of the stomach?
a.
b.
c.
d.
Helping you communicate
Making digestive juices
Churning your food and mixing it with
digestive juices
Removing waste from your body
Check Your Understanding
3. What organs in your body are responsible for
collecting wastes in your blood and forming urine?
a. lungs
b. stomach
c. liver
d. kidneys
Check Your Answers
1. A –All movement in your body is controlled
by your muscles.
2. C- Your stomach mixes your food with
digestive juices before it moves in to the
small intestine.
3. D- Most people have two kidneys which
are responsible for forming urine to
remove waste from your body.
Summary Question
Turn to your shoulder partner and tell
about one organ and the function it
performs to keep you alive and healthy.
Switch roles.