BIO: CH 10, 11, 13 Lecture Exam Study

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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


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