Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate … · 2018. 2. 3. · •There are three types of muscles in the muscular system. 1- The heart is made of one type

Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and

Circulate Blood?

Copyright © Houghton Mifflin Harcourt Publishing Company

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.

Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate Blood?

Warm up: Q1- CW 1



What forms your skeletal system?


1- Bones. 2- Cartilage. 3- ligaments.


Skeletal System.mp4

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.


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.


Exit slip: Q2 CW 1



Joints:


• Some joints, like those in the skull, don’t move. Other joints allow movement.


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.


Q3-CW 1


Word bank: a- Back and forth movement. Movement in a complete circle Side to side and rotational movement. b- c-


What makes up our Muscular System?


• Muscles are organs that contract to produce movement in the body.


Skeletal and Muscular System Explained thru Animation video 1.mp4

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.


Q4 C.W 1:



• Word Bank: - Heart muscle - -help to move - Organ muscles - -pump blood

- skeletal muscles - controls how materials pass through them

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.

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.

Muscles of Arm.mp4

Q5 C.W 1:


Choose: Bend - straighten


Q6 C.W 1:



Q7 C.W 1:



Breathe In, Breathe Out


• Organs in the respiratory system bring in oxygen and release carbon dioxide.


Respiration-Ventilation 3D Medical Animation.flv

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.


Breathe In, Breathe Out


• Red blood cells in the alveoli absorb oxygen. Identify the blood vessels and alveoli.


Q1 C.W 2:


• Word bank: Bronchi Alveoli Trachea Bronchioles Carbon dioxide oxygen


Asthma Attack


• 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.


Constricted Airways

Asthma Attack



• People can try to avoid asthma triggers; however, people can’t always avoid pollen or air pollution.

• 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.

Management Triggers

• The exact causes of asthma aren’t known.

• Some people are

born with asthma, while for other people, smoke, air pollution, and allergies can trigger an asthma attack.

What pumps your blood?



CIRCULATION.mp4

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.


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 and microbes. • Platelets stop bleeding by forming clots. • Plasma carries nutrients throughout the body.


Q 2 C.W 2:



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.


Q3 C.W 2:



Documents

Unit 3 Lesson 4 How Do Our Bodies Move, Breathe, and Circulate … · 2018. 2. 3. · •There are three types of muscles in the muscular system. 1- The heart is made of one type