Transcript Lesson 3-4 powernotes

Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and
Circulate Blood?
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Objectives:
• Describe the structures of the skeletal
system and their functions.
• Explain how the muscular system functions.
• Describe how the human body respires.
• Describe how nutrients and oxygen are
obtained and transported through the human
body.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Warm up:
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
What forms your skeletal system?
1- Bones.
2- Cartilage.
3- ligaments.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
1-Bones:
• Bones are organs that :
1- Support the body.
2- Protect the internal body parts.
3-Allow movement.
4- Store minerals(calcium) in
the outer layer.
5- Make blood cells in the spongy
inner layer which is called marrow.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
2- Cartilage:
• Cartilage cushions the ends of
bones and forms flexible parts
such as your ears and nose.
3- Ligaments:
• The place where two or more
bones meet is called a joint.
• Ligaments connect bones at joints.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Exit slip1: (active reading sheet)
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Joints:
• Some joints, like those in the skull, don’t move. Other
joints allow movement.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Types of Joints:
1-Ball-and-Socket Joints :
allow circular movement,
like the joint in your shoulder.
2-Hinge Joints:
allow back-and-forth movement,
like the hinge in your knee.
3-Pivot Joints:
allow rotation from side to side,
like the joint in your neck.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Active reading:
Word bank:
Back and forth movement.
3-
Movement in a complete circle
Side to side and rotational movement.
45-
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
What makes up our Muscular System?
• Muscles are organs that contract to produce
movement in the body.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Types of Muscles :
• There are three types of muscles in the muscular
system.
1- The heart is made of one type.
2- The walls of blood vessels and organs
are made of another type of muscle.
3- A third type, the skeletal muscle,
pulls bones to help us move.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
What controls our Muscles?
• Muscle movement can be involuntary or
voluntary.
• Involuntary movements:
-Happen without thinking about them, like your
heart beating.
• Voluntary movements:
-Can be controlled, such as running and playing.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Exit slip:
• Word Bank:
- Heart muscle
- -help to move
- Organ muscles
- -pump blood
- skeletal muscles
- controls how
materials pass through them
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
How do muscles work?
• Tendons are strong bands of
tissues that connect skeletal muscles
to bones.
• Muscles often work in pairs.
• When one muscle contracts, the
other muscle in the pair relaxes.
• The contracting muscle moves the bone that
it’s attached to.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Exit:
Choose:
Bend straighten
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Exit:
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Breathe In, Breathe Out
• Organs in the respiratory system bring in oxygen
and release carbon dioxide.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Respiratory System:
1-Nose:
- Air enters the body through the nose or mouth.
2-Trachea:
-Air flows through a tube in the throat called the
trachea.
3-Bronchi:
-The trachea branches into two smaller tubes called
bronchi
4-Lungs:
- The main organs of the respiratory system, are
spongy organs that expand to fill with air.
5-Bronchioles:
-Bronchi branch into many bronchioles in the lungs.
6-Alveoli:
-Tiny sacs called alveoli are attached to bronchioles.
They inflate and deflate as you inhale and exhale.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Breathe In, Breathe Out
• Red blood cells in the alveoli absorb oxygen.
Identify the blood vessels and alveoli.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Exit slip: (brain check no.2)
• Word bank:
Bronchi
Alveoli
Trachea
Bronchioles
Carbon dioxide
oxygen
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Asthma Attack
Constricted Airways
• Asthma is an illness that
makes it hard for a person
to breathe.
• During an asthma attack,
bronchi become swollen,
making airways smaller.
This makes it much harder to get air in and out of
the lungs.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
Asthma Attack
Triggers
Management
• The exact causes of
asthma aren’t
known.
• People can try to avoid asthma
triggers; however, people can’t
always avoid pollen or air
pollution.
• Some people are
born with asthma,
while for other
people, smoke, air
pollution, and
allergies can trigger
an asthma attack.
• A doctor can prescribe an
inhaler, a device that delivers
medication to the lungs. The
inhaler releases a mist that can
help open up airways.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
What pumps your blood?
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
What makes up your circulatory system?
1-The Heart :
-It is a muscular organ that pumps blood throughout the
body.
-It contracts in two phases.
- When the top part relaxes,
it fills with blood. When it contracts,
this top part squeezes blood to the
lower part.
• When the lower part contracts,
it squeezes blood from the heart into
vessels and all parts of the body.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
2-The Blood :
• Blood is made up of a clear
liquid called plasma and small
structures called blood cells.
• Red blood cells carry oxygen
throughout the body.
• White blood cells help fight
disease.
• Platelets stop bleeding by
forming clots.
• Plasma carries nutrients
throughout the body.
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Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?
3-The Vessels:
• Arteries:
- carry blood away from the heart.
• Veins:
- bring blood back to the heart from the lungs and
the body.
• Capillaries:
- Oxygen, nutrients, and carbon dioxide pass
through capillaries, or tiny vessels with very thin
walls, to parts of the body and into the blood.
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