Blood A. 1. 2.

Name
Date
Class
Lesson Outline
LESSON 3
Blood
A. Functions of Blood
1. Blood transports
, carbon dioxide, nutrients, hormones,
and waste products.
2. Some blood cells help protect the body from harmful organisms such as bacteria,
viruses, fungi, and
.
3. Blood helps the body maintain a steady
A(n)
of about 37°C.
in blood pressure warms up your body.
B. Parts of Blood
1. Blood is considered to be a(n)
because it is made up of
many kinds of cells that work together.
a. Red blood cells, or
, are made mostly of iron-rich
protein molecules called hemoglobin.
b. Hemoglobin carries
from the lungs to body cells.
c. White blood cells, or
, attack viruses, bacteria, fungi,
and parasites that might invade the body.
cells live for a few months;
cells live for a few days.
2.
are small, irregularly shaped pieces of cells that plug
wounds and stop bleeding.
3. The yellowish, liquid part of blood is called
.
4. Plasma helps thin the blood and transport
materials.
C. Blood Types
1. A blood
is the transfer of blood from one person to
another.
2. Blood type refers to the type of proteins, or
, on red
blood cells.
3. The
system contains four types: A, B, AB, and O.
4. Blood type is important because mixing two different types of blood together can
cause
function.
50
blood cells to clump and lose their ability to
Respiration and Circulation
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
d.
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Lesson Outline continued
5. A protein on red blood cells is a chemical marker called
the
.
6. If Rh positive blood is mixed with Rh
blood, clumping
can result.
D. Blood Disorders
1. People who have
lack a protein needed to clot blood.
2. People who suffer from
have low numbers of red blood
cells or have red blood cells that do not contain enough hemoglobin.
3. Cancer of the bone marrow, called
, can slow or prevent
blood cell formation.
4. People who inherit
disease have red blood cells shaped
like crescents. These cells can prevent oxygen from reaching tissues and can
.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
cause
Respiration and Circulation
51