Unit 5

Front 1

Circulatory system

Back 1

The system that circulates blood and lymph through the body

Front 2

Arteries

Back 2

any of the muscular-walled tubes forming part of the circulation system

Front 3

Veins

Back 3

any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.

Front 4

Cappillaries

Back 4

any of the fine branching blood vessels that form a network between the arterioles and venules.

Front 5

Heart

Back 5

a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.

Front 6

Blood

Back 6

the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body.

Front 7

Plasma

Back 7

the colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended.

Front 8

Red blood cells

Back 8

one of the cells of the blood, which in mammals are enucleate disks concave on both sides, contain hemoglobin, and carry oxygen to the cells and tissues and carbon dioxide back to the respiratory organs.

Front 9

Platelets

Back 9

Disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting.

Front 10

White Blood Cells

Back 10

reacts to invading microorganisms or foreign particles.

Front 11

immune system

Back 11

is the body's defense against infectious organisms and other invaders.

Front 12

Antibodies

Back 12

Antibodies combine chemically with substances that the body recognizes as bacteria, viruses, or foreign substances in the blood.