Exam 9: Cardiac Physiology

Platelet plugs do not grow excessively because of plasmin release by normal endothelial cells.

Which are the most common leukocytes normally found in the blood?

Haemoglobin transports carbon dioxide and oxygen.

The plasma is comprised mostly of water.

Fibrinogen is the insoluble clot-forming protein.

Which of these statements correctly describes basophils?

Which organ removes most of the worn-out red blood cells from the circulation?

All the constituents present in the plasma are freely diffusible across the capillary walls.

Deficiency of which vitamin can cause a bleeding tendency?

Erythroblastosis fetalis can develop between a mother and fetus under which of these circumstances?

Which of these platelet counts is within the normal range?

The granular leukocytes are more numerous than the agranular leukocytes per cubic millimetre.

Neutrophilia frequently accompanies bacterial infections.

Match these blood disorders labelled a. through h. with their characteristics. (Options may be used more than once or not at all.) a.aplastic anaemia b.pernicious anaemia c.haemolytic anaemia d.haemorrhagic anaemia e.polycythaemia f.leukaemia g.neutrophilia h.sickle cell anaemia -lack of intrinsic factor

Match the haemostasis steps, labelled a. through j., with their correct characteristic(s). (Options may be used more than once or not at all.) a.converts fibrinogen to fibrin b.When platelets come into contact with this substance in an injured vessel wall, it causes them to adhere and aggregate. c.When activated, this substance digests the fibrin threads, causing dissolution of the clot. d.substance released by the platelet plug that causes more platelets to aggregate e.first step in haemostasis f.forms the meshwork of the clot g.a plasma protein activated by factor X h.second step in haemostasis i.released from injured tissues; activates extrinsic clotting pathway j.third step in haemostasis -plasminogen

Thrombopoietin increases the number of megakaryocytes in the bone marrow.

Detail the life cycle of an erythrocyte, including the control of erythrocyte production.

Which of the following can occur with leukaemia?

Which of the following leukocyte types did NOT arise from myeloid stem cells?