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102 Cards in this Set

  • Front
  • Back
blood is composed of all except
interstitial fluid
the formed elements of the blood include
blood cells
the combination of plasma and formed elements is called
whole blood
when checking the efficiency of gas exchange it may be necessary to draw blood sample from?
an artery
the total volume of blood in the body of a 20kg man is approximately_____liters
5-6 liters
the most abundant proteins in blood plasma are
albumin
plasma proteins that are necessary for blood clotting are
fibrinogens
RBC production is regulated by the hormone
erithropoenin
which of the following statements are concerning RBC is false
do not have a larke
adult normal hct would be
45%
a person with type A blood has
B antigen on the RBC
the cups of AV valve are attached to papillary
chordae tendenea
the T wave on aa EkG tracing represents
ventricular re-polarization
contraction of the papillary muscle
present the AV valve from increasing into the atria
the visceral pericardium is the same as the
epicardium
the biscuspid valve is located
between Left atrium and R Ventricle
the left ventricle pumps blood to the
systemic system
the AV valve on the side of the heart that receives the superior vena cava is the
tricuspid
blood learning the right ventricle enters the
pulmonary trunk
air entering the body is filtering, warming and humidified by the
upper respiratory track
the entrance to the ascending aorta is guarded by the
semilunar valve
the common passeway shared by the respiratory and digestive system is the
pharynx
the airway between the larynx and the primary bronchi is the
thrachea
the actual sites of gas exchange within the lungs are
alveoli
when the diaphragm and external intercostal muscle contract
the V of thorax increases
the RA receives blood from the
inferior vena cava
the partial pressure of Oxygen in arterial blood is approximately
100 mmHg
the process by which dissolved gases are exchange between the blood and tissue is
internal respiration
boyles law, if the volume of gas increases
the pressure of the gas will decrease
the function of an atrium is to
collect blood
compare to the RV the LV has all following characteristics EXCEPT that it
relaxes the same way
the L and R Pulmonary Vein carry blood to the
Heart
the heart is composed of____layers
4
blood components
plasma, WBC, RBC
blood cells originate in red bone marrow from
hematopoetic
a protein called thrombopoietin stimulates large cells called
megakaryocytes
myeloid and lymphoid stems cells, respond to different secreted growth factors, called
hematopoietic growth factors
the lack of nuclei in the red blood cells cannot
synthesize messenger RNA
in the red bone marrow, hematopoietic stem cells divide and give rise to
erythroblasts
a negative feed back mechanism using the hormone
erytheopoietin
erythropoietin
controls the rate of red blood cell formation
the drop of the atmospheric pressure decreases releases the
EPO
The average life span of a red blood cell is
120 days
The number of red blood cells in a male is
4,600,000–6,200,000
Red blood cell formation (erythropoiesis) initially occurs
in the yolk sac, liver, and spleen
When iron stores are low,
absorption rate increases, and when the tissues are becoming saturated with iron, the rate greatly decreases.
Low blood oxygen causes the
kidneys and liver to release erythropoietin
A deficiency of red blood cells or a reduction in the amount of hemoglobin they contain results in a condition called
anemia
White blood cells, or leukocytes
protect against
disease
Neutrophils
have fine cytoplasmic granules
that appear light purple with a combination of acid and
base stains
Neutrophils
account for 54% to 62% of the leukocytes in a typical blood
sample from an adult
These cells
phagocytize bacteria, fungi, and some viruses
Neutrophils
Eosinophils
contain coarse, uniformly
sized cytoplasmic granules that stain deep red in acid
stain
moderate allergic reactions and
defend against parasitic worm infestation
Eosinophils
These cells make
up 1% to 3% of the total number of circulating leukocytes
Eosinophils
Basophils
are similar to eosinophils in size
and in the shape of their nuclei
they release histamine, which promotes infl ammation, and heparin, which inhibits blood clotting, thus increasing blood flow to injured tissues
Basophils
Monocytes
are the largest blood cells, two
to three times greater in diameter than red blood cells
leave the bloodstream and become macrophages
that phagocytize bacteria, dead cells, and other debris in the tissues
Monocytes
They usually make up 3% to 9% of the leukocytes in
a blood sample and live for several weeks or even months
Monocytes
Lymphocytes
are usually only slightly
larger than erythrocytes
The major types of lymphocytes are T cells and
B cells, both important in
immunity.
T cells
directly attack
microorganisms, tumor cells, and transplanted cells
B cells
produce antibodies
White blood cells
protect against infection in various ways
Leukocytes can squeeze between the cells
This movement, called
diapedesis
The most mobile and active phagocytic leukocytes are
neutrophils and monocytes
The swelling that
this inflammatory reaction produces delays the spread of
invading microorganisms into other regions
This phenomenon is called positive
chemotaxis
A total
number of white blood cells exceeding 10,000 per microliter
leukocytosis
Platelets
also called thrombocytes
Megakaryocytes, and therefore platelets, develop from
hematopoietic stem cells
in response to the hormone
thrombopoietin
Platelets help repair
damaged blood vessels by sticking
to broken surfaces
They release serotonin
which contracts
smooth muscles in the vessel walls, reducing blood flow.
Red blood cell (erythrocyte
Transports oxygen and carbon dioxide
White blood cell (leukocyte)
Destroys pathogenic microorganisms
and parasites and removes worn cells
Neutrophil
Phagocytizes small particles
Eosinophil
Kills parasites and moderates allergic
reactions
Basophil
Releases heparin and histamine
Monocyte
Phagocytizes large particles
Lymphocyte
Provides immunity
Platelet (thrombocyte)
Helps control blood loss from broken
vessels
plasma proteins
are the most abundant dissolved
substances (solutes) in plasma
Albumins
are the smallest of the plasma
proteins, yet account for 60% of these proteins by weight
albumins are an important
determinant of the
osmotic pressure of the plasma
If the concentration of plasma proteins falls, tissues swell, a condition
called edema.
Globulins
which make up about 36% of
the plasma proteins, can be further subdivided into alpha,
beta, and gamma globulins
Fibrinogen
which constitutes about 4% of
the plasma proteins, plays a primary role in blood coagulation
The most important blood gases are
oxygen and carbon dioxide
The plasma nutrients
include amino acids, simple sugars,
nucleotides, and lipids absorbed from the digestive tract
Molecules that contain nitrogen atoms but are not proteins
comprise a group called
nonprotein nitrogenous substances
a rise in the blood urea
nitrogen (BUN)
may suggest a kidney disorder
Coagulation
the most effective hemostatic
mechanism, forms a blood clot in a series of reactions
Hemostasis
refers to the stoppage of bleeding,
which is vitally important when blood vessels are damaged
Cutting or breaking a smaller blood vessel stimulates the
smooth muscles
called vasospasm
A blood clot abnormally forming in a vessel is a
thrombus
clot that dislodges, or a fragment of a clot
that breaks loose and is carried away by the blood fl ow, is
called an
embolus
embolism.
emboli continue
to move until they reach narrow places in vessels where they
may lodge and block blood fl ow, causing an
atherosclerosis
accumulations
of fatty deposits change arterial linings, sometimes
initiating inappropriate clotting
whenever antigen A is absent in the red blood cells,
an antibody
called anti-A is produced
anti-B
whenever antigen
B is absent, an antibody called
persons with type A blood also have
anti-B antibody
in their plasma
those with type B blood have
anti-A
antibody