Chapter 4:
What’s Inside Your
Body
What are cells?
Every living thing is made up of tiny working units,
called cells. They are the building blocks of the
human body. They work to keep an organism alive
and healthy. Cells combine to make tissues.
What are tissues?
Cells are arranged into larger working units called
tissues. Tissues combine to form organs.
What are organs?
Two or more tissues working together form an
organ. Organs work together as organ systems.
Describe nerve cells & explain why they are
special:
Nerve cells (also known as neurons) are very special
cells that messages can travel through.
List the 4 types of tissue:
1)
2)
3)
4)
Muscle tissue
Skin tissue
Connective tissue
Nerve tissue
What are organ systems?
Organs work together as organ systems. There are
twelve major organ systems in your body.
Use page 34 to explain how your body is organized. Be sure to include each of the labeled parts!
Cells are the building blocks of the human body. They work together to form tissues,
which are a group of cells working together as a unit. Tissues work together to form
organs, which are made up of several types of tissues. Organs work together to form
organ systems, which are two or more organs working together to accomplish an
essential task. Organ systems work together in our bodies.
What is the….
Circulatory System?
Carries needed materials to all the cells in your
body, and carries away waste. Also known as the
cardiovascular system.
Muscular System?
Allows your bones and other body parts to move.
Respiratory System?
Delivers oxygen from the air to your blood and
carries waste from your blood to the air.
What 4 things do all cells need to be healthy?
Water
Oxygen
Nutrients (good)
A way to get rid of harmful waste
Digestive System?
Takes in and breaks down the food you eat so it can
reach your blood.
Nervous System?
Sends messages from one part of your body to
another.
Skeletal System?
Protects other body parts, provides support, stores
minerals, and allows you to move.