BLOOD AND LYMPHATIC SYSTEM

Review 33.2 Worksheet

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Lab QuestionsChapter 33.2 Worksheet

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Answer questions 1-3 on page 961

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90% water10% dissolved gases, salts, nutrients, enzymes,

hormones, etc.Helps control body temperatureAlbumin, globulins, and fibrinogen

PLASMA

Most numerous cells in bloodTransport oxygenGet their color from iron in hemoglobin

Binds oxygen in the lungsProduced by cells in red bone marrowCirculate for average of 120 days

RED BLOOD CELLS

Also called, leukocytesGuard against infection Increased levels signify a fight against serious

infectionOutnumbered by RBCs 1000 to 1Can live for years

WHITE BLOOD CELLS

Plasma proteins and cell fragments

PLATELETS

WHAT IS THIS?

Until mid 19 th century, patients were bled by the use of leeches

In 2004, the FDA approved the use of leeches as a medical device

Must be limited to when blood needs to be taken from a specific area of tissue Such as when blood needs to be drained from an area

surrounded by damaged blood vesselsLeeches take blood but also release a chemical that

inhibit clotting, increasing blood flowAlso numb the area while blood is drawn

LEECHES

First carried out in 1818Work when blood types matchCan happen when blood types don’t match

BLOOD TRANSFUSIONS

Answer questions 1-3 on page 961

HOMEWORK DUE TOMORROW