Body's Transportation System Blood Vessels Blood Lymph Cardiovascular Health

100

What is the cardiovascular system?
Carries needed substances to cells and carries waste products away from cells

100

What are the arteries?
Their walls consist of 3 layers-the innermost is made of epithelial tissue which is smooth

100

What is plasma?
About 45% of the volume of blood is made of cells. This is the rest

100

What is the lymphatic system?
A network of veinlike vessels that returns fluid to the bloodstream

100

What is atherosclerosis?
A condition in which an artery wall thickens

200

What is the heart?
A hollow muscular organ that pumps blood through the body

200

What is a pulse?
You feel this because of the alternating and expansion and relaxation of the artery wall

200

What are red blood cells?
Take up oxygen in lungs and deliver to other parts of body

200

What is lymph?
Made of water and dissolved material such as glucose

200

What is a heart attack?
Occurs when blood flow to part of the heart is blocked

300

What are the atrium?
The two upper chambers that recive blood that comes into the heart

300

What are the capillaries?
Where materials are exchanged between blood and the body's cells

300

What is hemoglobin?
An iron containing protein that binds chemically to oxygen molecules

300

Why does lymph move slowly?
Because the system has no pump

300

What is hypertension?
A disorder where a person's blood pressure is consistently higher than normal

400

What is the pacemaker?
A group of cells that sends out signals that make the the heart muscle contract

400

What are the veins?
These carry blood back to the heart

400

What are white blood cells?
The body's disease fighters

400

What are lymph nodes?
Knobs of tissue that filter lymph

400

What are being overweight and failing to get enough exercise?
Two factors that can increase a person's risk of developing hypertension

500

What are the ventricles?
They exert a force that moves blood out of your heart and into arteries

500

What is blood pressure?
This is caused by the force with which the ventricles contract

500

What are the 4 blood types?
Blood type, A, B, AB, O

500

What are "swollen glands"?
Another name for swollen lymph nodes

500

Who are smokers?
This group of people are twice as likely to have a heart attack than nonsmokers

Circulatory System~7th grade life science

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