Blood Flashcards
- The only fluid tissue in the body
Blood
is a type of connective tissue that consists of a liquid matrix containing cells and fragments
blood
living blood cells (cell fragments)
formed elements
f
formed elements are suspended in a non living fluid matrix called?
plasma
Total blood volume in an average female adult
4-5 liters
total blood volume in an average male
5-6
Blood makes up _% of the total weight of the body
8%
Centrifuged blood
3 blood components
- Plasma (55%)
- Buffy Coat (<1%)
- erythrocytes (45%)
Physical Characteristics
Sticky, opaque fluid with a metallic taste
Blood
Physical Characteristics
Color varies from
scarlet to dark red.
Blood is denser than ___ and about 5 times more ___largely because of the ___
- Blood is denser than water and about five times
more viscous, largely because of the formed
elements
Blood is Slightly alkaline
(pH – 7.35-7.45)
Functions of the Blood
- Protection
- Distribution
- Regulation
A pale - yellow fluid that consists of about:
* 91% ___
* 7% ___
* 2% ___
Plasma
* 91% water
* 7% proteins
* 2% other solutes
Plasma Proteins (3)
- Albumin
- Globulin
- Fibrinogen
Albumin (__%)
Globulin (__%)
Fibrinogen (__%)
Albumin (58%)
Globulin (38%)
Fibrinogen (4%)
Contributes to osmotic
pressure
Albumin (58%)
Composed of gamma,
alpha and beta
Globulin (38%)
Contributes to blood
clot
Fibrinogen (4%)
The process of blood cell production is called
“hematopoiesis.”
All the formed elements of the blood are derived
from a single population of cells called
“stem cells.”
Formed elements are composed of
- 95% of red blood cells (erythrocytes)
- 5% of white blood cells (leukocytes) and blood platelets
(thrombocytes)
erythrocytes
red blood cells
leukocytes
white blood cells
thrombocytes
blood platelets
Biconcave disk, no
nucleus,
Red blood cells (erythrocytes)
erythrocytes contain
___ which colors
the cell red.
hemoglobin
diameter of erythrocytes (RBC)
6.5-8.5 micrometer
A microliter of blood
contains of ___ red
blood cells.
5 million
Functions of erythrocytes
Transports oxygen and cabon dioxide
Hemoglobin consist of
globin(2 alpha and beta polypeptide chains)
4 heme groups
Spherical cells with a
nucleus
White Blood Cells (Leukocytes)
A microliter of blood
contains __ white blood cells.
5,000-10,000 leukocytes
Body’s defense against
pathogens
WBC leukocytes
WBC is composed of (5)
- Neutrophil
- Basophil
- Eosinophil
- Lymphocyte
- Monocyte
White Blood Cells
Nucleus with 2-4 lobes connected by thin filaments;cytoplasmic granules stain a light pink or reddish purple; Phagocytosis
Neutrophil