Transcript Chapter 17, Section 3 Blood and Lymph

Chapter 17, Section 3
Blood and Lymph
Thursday, March 18, 2010
Pages 549 -- 554
Objectives
• Learn the four components of blood.
• Understand what determines the type of
blood that a person can receive in
transfusion.
Vocabulary Words
•
•
•
•
•
Plasma
Red Blood Cells
Hemoglobin
White Blood Cells
Platelets
•
•
•
•
•
Fibrin
Blood transfusion
Lymphatic system
Lymph
Lymph nodes
Components of Blood
• There are four components of blood.
– Plasma
– Red blood cells
– White blood cells
– Platelets
Red Blood Cells
• Red blood cells (RBC)
carry oxygen from the
lungs to the body.
• Made up of mostly
hemoglobin.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
– Hemoglobin is an ironcontaining protein that
binds chemically to
oxygen molecules.
• RBCs are produced in
the bone marrow.
• RBCs have no nuclei.
Plasma
QuickTi me™ and a
T IFF (Uncompressed) decompressor
are needed to see thi s pi cture.
• Plasma is the liquid
part of blood.
• Plasma is mostly
water.
• 10% is dissolved
materials such as
food molecules,
vitamins, minerals,
waste products, and
plasma proteins.
White Blood Cells
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
This is a picture of WBCs attacking bacteria.
• White blood cells (WBCs)
are made in the bone
marrow.
• They are bigger than RBCs.
• They have a nuclei.
• Their job is to alert the body
when disease-causing
organisms invade.
• They produce chemicals to
fight invaders or surround
and kill the disease-causing
organisms.
Platelets
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
• Platelets are cell
fragments that help
form blood clots.
• They collect and stick to
any site where a blood
vessel is cut.
• Chemicals are released
that cause production of
fibrin.
– Fibrin is a chemical that
weaves a net of fibers
across a wound that
traps blood cells that
form a clot.
Blood Transfusion
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
• Blood transfusion is the
tranference of blood
from one person to
another.
• The marker molecules
on your RBCs
determine your blood
type and the type of
blood you can safely
receive in a transfusion.
Blood Types
• There are four types
of blood.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
–
–
–
–
Type A
Type B
Type AB
Type O
• Each type has
different marker
molecules.
Blood Type A
• Blood type A has an A marker.
• Blood type A can receive transfusions of
type A or O because they do not have a
B marker.
Blood Type B
• Blood type B has a B marker.
• People with blood type B can receive
transfusions of blood type B or O
because they do not have an A marker.
Blood Type O
• People with type O blood have both
anti-A and anti-B clumping proteins.
• Blood type O can only receive type O
blood.
• Nick-named the Universal Giver
– Anyone can receive type O blood
Blood Type AB
• People with type AB blood have no
clumping proteins.
• They can receive all blood types.
• Nick-named the Universal Recipient.
The Lymphatic System
• The lymphatic System is a network of
vessels that returns the fluid to the
bloodstream.
• Fluid that enters the lymphatic system is
called lymph.
• Lymph nodes are small knobs of tissue
that filter the lymph as it passes
through.
Homework
• Workbook 17.3 (3/22)
• Vocabulary quiz 17.3 (3/23)