A __________ is a group of organs that work together to do a job.

All body systems work together to keep balance inside our body (internal

balance). This balance is called __________.

When we are hot, we ______ to cool down.

A group of parts that work together to do something important.

The body’s way of keeping everything balanced and working properly.

The _____________ system allows

us to move our bodies.

Without muscles, we wouldn’t be able to stand, walk, or even breathe.

The type of muscles that move our bones.

The type of muscles found in organs

like the stomach.

The type of muscles found only in

the heart and never gets

tired.

The type of system that is made up of bones.

__________ give our body shape and support. They also protect our

internal organs.

The skull protects the brain.

The ribs protect the heart and lungs.

Bones also make blood cells inside a part. It is called the

____________.

Together with muscles, bones help the body move and stay upright.

The _________ system breaks down the food we eat into small parts that

our body can use.

It starts in the mouth,

where teeth chew food

and saliva softens it.

The food travels down the _________ to the stomach, where it is mixed

and broken down more.

After the esophagus, it goes to the __________, where nutrients

are absorbed into the blood.

Finally, waste materials go to the __________ and then leave the body

through the ______.

This system gives us energy for all our daily activities.

This system moves blood around the body.

__________ carries oxygen from the lungs and nutrients from the food to every part of the body.

This system makes sure that every part of your body gets what it needs to

stay alive.

This system helps us breathe.

We breathe in _____ and breathe out carbon dioxide.

We breathe in oxygen and breathe out _________.

The system that gives our cells oxygen so they can do their jobs and keep us alive.

STUDY THE PICTURE

What do you call the smallest parts of the body?

It is a groups of cells working together.

Made of tissues that do a special job.

Groups of organs working together.

The ___________ helps our body move, stay stable, and support our posture.

_______ make up almost half of our body weight.

These type of muscles are attached to the bones.

These type of muscles are found in internal organs

These type of muscles are found only in the heart

Skeletal muscles are attached to bones by ______

Skeletal muscles work in pairs: when one contracts, the other __________.

Skeletal muscles are also called ______

Skeletal muscles are responsible for ________ movement.

Smooth muscles perform ________ movement.

Help with digestion. They work slowly but can keep going for a long time.

They are muscle movements that we can control.

They are muscle movements that work automatically.

When muscles contract, they get ______

When muscles contract the get shorter, when muscles relax, they ________

The ________ sends signals to muscles to tell them when to move.

The _______ system is the framework of the body.

The skeletal system is the framework of the body. Made up of _____ bones.

What system helps with movement.

Bone marrow makes ____ and _____ blood cells.

_____ protect the heart and lungs.

_________ protects the spinal cord.

The _____ protects the lower organs.

Some bones are not solid.

Inside, there is a soft part called ________.

Red marrow makes _____ and _________.

the hard structure of the skeleton is called

where two bones meet.

soft, flexible tissue that prevents bones from rubbing.

tough cords that connect bones to bones.

strong cords that connect muscles to bones.

make the skeleton flexible.

allow movement (arms, legs).

no movement (skull)

keeps joints smooth and slippery

bones or skeleton in the head, neck, trunk, skull, spine, ribs, and sternum belong to:

skeletons in the limbs (shoulders, hips, arms, legs, hands and feet)

This system is made up of alimentary canal (GI tract) and accessory organs.

alimentary canal is also known as

How long is the GI tract?

Where food is chewed and mixed with

saliva.

A tube that pushes food from the mouth to the stomach.

Mixes food with acid and enzymes to break it down.

Absorbs nutrients from food into the blood.

Absorbs water and forms solid waste.

The opening where waste leaves the body.

Accessory organ that Cut and grind food into smaller pieces.

Accessory organ that Helps move food and mix it with saliva.

Accessory organ that Produce saliva to soften food.

Accessory organ that Makes bile to digest fats

Accessory organ that Stores bile from the liver

Accessory organ that Produces digestive enzymes.

STUDY: MA'AM QUEEN MIGHT MAKE YOU EXPLAIN FROM MOUTH TO ANUS DIGESTION OF FOOD:
When you eat food, your teeth chew it into small pieces while your tongue and saliva help make it soft. After you swallow, the food slides down the esophagus into your stomach where food is mixed with special juices. The food then travels through the small intestines where nutrients are absorbed, and leftover food goes to the large intestine. Finally, what is left becomes feces which comes out in the anus.

Starts when you chew food with your teeth. Your tongue helps move the food around so it mixes with saliva. Then, food travels down the esophagus through a squeezing movement called peristalsis, which pushes food into your stomach.

Physical breakdown of food

into smaller pieces.

happens when food is mixed with special juices made by your body —

like enzymes, bile, and acids. These break down food into nutrients your body can use.

The chemical breakdown of food into nutrients.

In the mouth, __________ breaks down starch and fats.

In the stomach, _________ break down proteins.

In the small intestine, _____ and _____ finish digestion.

In the __________, nutrients from food are absorbed into your blood to give

energy to your body.

The leftover food then goes to the ____________, where

water is absorbed back into your body.

Pumps blood around the body

Carries oxygen, nutrients, and wastes.

The pathways that blood travels through.

Main organ of the circulatory system. Protected by the rib

cage and sternum.

The heart is about the size of your

STUDY THE FLOW OF BLOOD:

• Blood from the body enters the right atrium then to the right ventricle.

• The heart pumps it to the lungs to get oxygen.

• Fresh blood returns to the left atrium then moves to the left ventricle.

• The heart pumps it out to the whole body.

Carry oxygen and nutrients to all body parts.

Help fight off infections and diseases.

Help stop bleeding by forming clots.

Carry oxygen-rich blood away from the heart.

Carry oxygen-poor blood back to the heart.

Tiny vessels that allow gas and nutrient exchange between blood and tissues.

The type of circulation from the heart to the lungs and back.

The type of circulation From the heart to the rest of the body and back.

Transport oxygen to the blood and remove carbon dioxide.

A muscle below the lungs that helps you inhale and exhale.

Include the nose, trachea, and bronchi — passageways for air.

STUDY THE PROCESS OF BREATHING:

You breathe in oxygen then air travels through the trachea, bronchi, and bronchioles. In the lungs, oxygen enters the blood and carbon dioxide leaves. You breathe out carbon dioxide.

STUDY