The Circulatory System
The Heart
The Respiratory System
Potpourri
More Potpourri

100

Needed substances are carried to the body's cells by what?
The Blood

100

If your pulse rate increases, is your heart beating faster or slower?
Faster

100

Where in the respiratory system does gas exchange occur?
In the alveoli

100

What part of the respiratory system divides into smaller and smaller tubes in a pattern that resembles branches of a tree?
Bronchi

100

As air travels from the outside environment into the lungs, what organs does it pass through?
Nose, pharynx, trachea, bronchi

200

What component (part) of blood carries oxygen to the body's cells?
Red Blood Cells

200

Exercise is important for cardiovascular health because...
it strengthens the heart muscle

200

The role fo the respirtory system is to bring what substance into the body?
oxygen

200

How big is your heart?
about the size of your fist

200

What is the main organ of respiration?
lungs

300

What are the main organs of the circulatory system?
Heart, Blood, Vessels

300

What structure of the heart prevents blood from flowing backward?
valve

300

During gas exchange, what substance moves from the alveoli into the blood?
oxygen

300

What color is oxygenated blood?
bright red

300

What is the name for the small grape-like structures at the end of the bronchi?
alveoli

400

What are the three types of vessels?
Arteries, veins, capillaries

400

When the ventricles contract, where is blood pumped?
Out of the heart (to the lungs or to the body)

400

What is the dome shaped muscle that plays an important role in breathing?
the diaphragm

400

What are the four main blood types?
A, B, AB and O

400

What factors can influence lung capacity?
size, health conditions like asthma, amount of physical exercise, smoking

500

What are the four components of blood?
Plasma, white blood cells, red blood cells, platelets

500

What are the four chambers of the heart?
left atrium, left ventricle, right atrium, right ventricle

500

How can smoking lead to emphysema?
By destroying lung tissue

500

What type of blood is known as the "Universal Donor"
Type O

500

Describe the path oxygenated blood takes as it leaves the lungs
lungs->left atrium->left ventricle->cells of the body->right atrium->right ventricle->lungs