BIO: CH 10, 11, 13 Lecture Exam Study
severe shock that can be fatal occurs with blood loss exceeding
30%
What is the process whereby the binding of antibodies to antigens causes RBCs to clump?
agglutination
hemolysis most likely will occur when
an Rh negative person receives the second transfusion of blood that is Rh positive
Which formed element is the most abundant in blood?
erytrocyte
which long hair like molecules form the basis of a clot during coagulation?
fibrin
what does fibrin contribute to the process of coagulation?
fibrin forms a meshwork that traps RBCs and forms the basis of the clot
white blood cells containing granules and lobed nuclei are classified as
granulocytes
what tissue receives increased blood flow during exercise
heart, skin, skeletal muscle
the percent of erythrocytes in blood is known as
hematocrit
what component of a red blood cell binds and transports oxygen?
hemoglobin
what is not contained in the plasma of blood?
hemoglobin
process by which bleeding is stopped
hemostasis
Erythrocytes
lack of nucleus and most organelles
a recent blood test shows that mr. Jimenez's total WBC exceeded 11,000 cells/mm^3. What is most likely his condition?
leukocytes
in a centrifuged blood sample, the buffy coat situated between the formed elements and the plasma contains
leukocytes and platelets
Jordan works in a hematology lab and processed a blood report showing 22,000 white blood cells/mm^3 for a patient. He suspects this patient has a bacterial infection leading to
leukocytosis
what multinucleate cell gives rise to thousands of anucleate fragments known as platelets?
megakaryocyte
the layer of the heart wall that receives the stimulus from letter E is called the
myocardium
the friction blood encounters as it flows through the vessels is called
peripheral resistance
blood disorder is more likely to occur with age
pernicious anemia
Life at a high altitude can lead to a red blood cell disorder known as ________.
polycythemia
the transportation of blood from the right side of the heart to the lungs and back of the left side of the heart is knowns as the __________ circulation
pulmonary
where does hematopoiesis occur to produce new red blood cells?
red bone marrow
which re blood cell disorders may provide a better chance of surviving where malaria is present?
sickle cell anemia
what forces a contraction rate of 75 bpm as the pacemaker of the intrinsic conduction system of the heart?
sinoatrial (SA) node
what represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?
sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
a hematocrit is a measure of
the percent of blood that is comprised of red blood cells
which of these steps of hemostasis results in the creation of long, hair like molecules of insoluble fibrin?
the reaction between thrombin and fibrinogen
which of the following statements is NOT accurate with respect to erythrocytes?
they migrate into infected regions of tissue
Our vessels lose elasticity as we age, as happens in arteriosclerosis. Which vessel layer is affected?
tunica media
what describes atrial diastole?
ventricles passively filling with blood
which blood type(s) can a person with blood type O recieve?
Blood type O
a blood clot traveled to a small vessel in mr. zeng's lungs and became lodged there. how should this moving clot be named?
an embolus
which valve is closed during heart relaxation to prevent blood from backflowing the aorta into the heart?
aortic semilunar valve
Shakira is taking an antihistamine medication due to several itchy mosquito bites. This medication blocks the release of histamine from ________.
basophils
what is blood serum?
blood plasma minus the clotting proteins
contains on a-antigen
blood type A
Molly has blood type A and her daughter has blood type B. Why can't Molly donate blood to her daughter?
blood type B contains anti-A antibodies which will agglutinate type A blood
what is the final step of homeostasis in which the formation of a blood clot is accomplished?
coagulation
which of the following would decrease the rate of blood flow through a blood vessel?
constricting of blood vessels, raise blood pressure leaving the vessel, but not entering,
what trigger erythropoietin release?
decreased blood oxygen levels
