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Human Body Systems

Lp S

When you turn on a faucet theexcess water runs down the drain.

Your bodys excess

_______________ fluid is removed

by the _______________ system.

Nutrients, water and oxygen

molecules in the blood

__________________ through

capillary walls to nearby cells.

Those substances can become part of

the tissue fluid that is found

_____________________ cells.

This fluid is collected and ____________________ to the ____________________ by the

lymphatic system.

Once the fluid is in the lymphatic capillaries, it is called _______________.

Lymphatic System

name: __________________

The Lymphatic System carries lymph through a network of lymph ______________ and

larger lymph vessels.

Then lymph drains into large _____________ near the _____________.

There is no _____________, like the heart, in the lymphatic system.

The movement of lymph depends on the contraction of _____________ muscles in the

lymph vessels and skeletal muscles.

Lymph vessels, like veins, have _____________ that keep lymph from flowing backwards.

If the lymphatic system is not working properly, severe _____________ occurs because the

tissue fluid cannot get back to the blood.

Lymphatic Circulation

Lymph contains water and dissolved substances, but it also contains ___________________.

Lymphocytes are a type of ______________ blood cell that help your body defend against

disease-causing organisms.

Lymphocytes

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LYMPHNODES

Before the lymph enters the blood, it passes through lymph ______________, which are

bean shaped organs of varying ______________ found throughout the body.

Lymph nodes filter out ____________________________ and foreign material that have

been taken up by ________________________.

When your body fights an infection, lymphocytes ______________ the lymph nodes.

The lymph nodes become ______________, warm, reddened, and tender to the touch. After

the invaders are destroyed, the swelling, redness, warmth and tenderness in the lymph nodes

goes away.

TONSILS

Another important lymphatic organ is the tonsils.

They are in the back of your throat and protect you from harmful microorganisms that enter

through your _________________ and _________________.

THYMUS

Another important lymphatic organ is the thymus.

The thymus is a soft mass of tissue located behind the _________________.

The thymus _________________ lymphocytes that travel to other lymph organs.

SPLEEN

Another important lymphatic organ is the spleen.

This is the _____________________ lymphatic organ.

It is located behind the upper-left part of the stomach and _______________ the blood by

removing _____________________ and _____________________ red blood cells.

Cells in the spleen take up and destroy _____________________ and other harmful

substances.

Lymphatic Organs

_______ is a deadly virus.

When it enters a persons body, it attacks and destroys _________________, called helper T

cells that help make _________________ to fight infections.

This affects the persons _________________ against certain diseases.

Usually the person dies of one of those diseases, not from the _________________.

Lymphatic Diseases