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Transcript
Aim: How can we examine
the parts of the blood?
Path Of Blood Through The heart
Body
Vena
Cave
Aorta
Right Atria
Left
Ventricle
Right
Ventricle
Pulmonary
Artery
Left Atria
Pulmonary
Veins
Lungs
Blood
 Three
Functions:
Transport
Regulation
of temperature
Protection
from disease
Parts Of Blood
 Plasma
 Cellular
Components
Plasma
 Straw
colored, liquid portion of
blood.
 Makes up 55% of total blood
volume.
 90% water.
 Salts, proteins, glucose, amino
acids, enzymes, hormones, and
Parts of Blood:
Cellular Components:
Red Blood Cells (Erythrocytes)
 Small disc shaped cells with a
depression in center.
 Contain hemoglobin – the red oxygen
carrying pigment.
 They have NO NUCLEUS or
MITOCHONDRIA and cannot
REPRODUCE.
Weird Science fact
5 million RBC’s can fit on the
head of a pin, and over 5 trillion
RBC’s are present in your body
at any given time.
Cellular Components:
White Blood cells
 Large
cells with a nucleus.
 Less numerous than RBC’s.
 Defenders of the body.
 Types:
Phagocytes: engulf and destroy
bacteria
Lymphocytes: produce antibodies
Types of Leukocytes (WBC)
Granulocytes
 Neutrophils – break down bacteria
 Eosinophils – allergies/parasites
 Basophils - inflammation
Mononuclear leukocytes
 Monocytes – devour microbes
 Lymphocytes -
Cellular Components:
Platelets
-Much smaller than RBC’s
and WBC's
-Plays a role in blood clotting
What happens when we get a cut?
1
2
3
1. Break in the blood vessel wall.
2. Platelets collect in the open wound.
3.An enzyme reaction creates fibrin (thin
strands) that create a network to collect
RBC’s and clot the wound.
Parts of Blood:
Genetics of Blood Types

Your blood type is established before you are BORN,
by specific GENES inherited from your parents.

You inherit one gene from your MOTHER and one
from your FATHER.

These genes determine your blood type by causing
proteins called AGGLUTINOGENS to exist on the
surface of all of your red blood cells.
What are blood types?
Blood Types
There are 3 alleles or genes for blood
type: A, B, & O. Since we have 2 genes,
there are 6 possible combinations.
AA or AO = Type A
BB or BO = Type B
OO = Type O
AB = Type AB
http://learn.genetics.utah.edu/units/basics/blood/types.cfm
How common is your blood type?
46.1%
38.8%
11.1%
3.9%
Blood Transfusions
A blood transfusion is a procedure in which blood is given to a patient through an
intravenous (IV) line in one of the blood vessels. Blood transfusions are done to replace
blood lost during surgery or a serious injury. A transfusion also may be done if a person’s
body can't make blood properly because of an illness.
Who can give you blood?
Universal Donor
People with TYPE O blood are called
Universal Donors, because they can give
blood to any blood type.
People with TYPE AB blood are called
Universal Recipients, because they can
receive any blood type.
Rh +  Can receive + or Rh -  Can only receive Universal Recipient
Rh Factors



Scientists sometimes study Rhesus monkeys
to learn more about the human anatomy
because there are certain similarities between
the two species. While studying Rhesus
monkeys, a certain blood protein was
discovered. This protein is also present in the
blood of some people. Other people, however,
do not have the protein.
The presence of the protein, or lack of it, is
referred to as the Rh (for Rhesus) factor.
If your blood does contain the protein, your
blood is said to be Rh positive (Rh+). If your
blood does not contain the protein, your blood
is said to be Rh negative (Rh-).
http://www.fi.edu/biosci/blood/rh.html
A+ AB+ BAB+ ABO+ O-
Designer Blood
The federal government wants to find ways to
make the blood supply safer for everyone who
needs blood. However, no one has yet found a
way to find and eliminate all disease-causing
agents in the blood. Imagine that you are the head
of a biotechnology company and think that you
can design a safe alternative — artificial blood.
1. What characteristics would artificial blood need to
take the place of real blood?
2. Do you think that artificial blood could completely
replace real blood? Explain your answer.