Download Chapter 3: Human Body Systems

Chapter 3: Human Body Systems
Study Guide
Lesson 1: What is the circulatory system?

The ___________________________________ moves material around the body. It can be called the
body’s ______________________________________________.

Parts of the circulatory system are
o ________________
o ________________
o ________________ called _______________

The circulatory system carries ___________________ and _________________ to each cell and takes
away cells’ __________________.

The blood’s ____________________ carries food from the digestive system to your cells.

Cells also get __________________ from plasma.

Red blood cells carry _______________________ to the body’s cells.

White blood cells protect your body against ______________________ and other harmful things.

When the body needs to fight _________________________ , it makes _____________________white
blood cells.

Blood is made up of _____________________________ cells, _________________________,
______________________________, and ________________________________.

__________________________ are blood vessels that carry blood ________________ from your heart
to other parts of your body.

The smallest kind of blood vessel is called a _________________________.

__________________ are blood vessels that take blood from cells ___________________ to the heart.

The human heart has ____________ chambers. The upper parts are the _____________________ and
the lower parts are the ___________________________.
Lesson 2: What is the respiratory system?

The respiratory system carries _________________ between the outside air and your ______________.

The respiratory system includes these parts;
o _____________________ - a tube that carries air from the __________________to the lungs
o _____________________ - smaller tubes from those that branch out from the trachea
o _____________________ - a muscle in the bottom of the chest area that contracts with breathing
o _____________________ - where oxygen enters the blood & carbon dioxide leaves the blood

The air sacs walls are covered with a web of tiny blood vessels called _________________________.

In humans, the respiratory and circulatory systems work together to get ____________________ to the
_______________________.

Holding your breath causes __________________________________ to build up in your blood. Your
_________________ sends a message to the diaphragm and __________________________________
telling them to breathe.
Lesson 3: What are the digestive and urinary systems?

Food passes through many organs as you ____________________. These organs help the
_________________________________ do its job.

___________________________ is the first step of digestion by making it small enough to swallow.

The __________________________ pushes food to the ___________________________ by squeezing
its rings of muscles in a pattern.

At the bottom of your esophagus, under your lower left ribs is your _________________________.

Your ___________________________ and _______________________________ are organs that send
____________________________________ to your small intestine to help digest food.

Villi give the ___________________________________________ more surface area to absorb food.

The ____________________________________________ works in your body to get rid of wastes that
are in the blood.

_______________________________ are a pair of organs in the urinary system that remove wastes
from your blood.

The kidneys help keep right amount of ______________________, ________________________,
calcium, nutrients and other ______________________________ into your blood that your body needs.

A _____________________ carries ________________________ away from the kidneys to the
________________________________________________ where it is _________________________
until it leaves the body.