Exam 9: Cardiac Physiology

Which of these statements correctly describes white blood cells?

Serum is identical in composition to plasma; that is, both contain all the components of blood except for the blood cells.

Which of these blood cellular elements lack nuclei?

The percentage of whole blood occupied by erythrocytes, known as the ____________________, is normally ____________________ (greater than, less than) the plasma volume.

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 -fibrin

Which of these statements correctly describes neutrophils?

If a type B negative patient is accidentally given type A positive blood, what will happen?

Match the leukocytes, labelled a. through e., with their correct characteristic. (Options may be used more than once or not at all.) a.neutrophils b.eosinophils c.basophils d.monocytes e.lymphocytes -the first phagocytes to arrive at site of bacterial invasion

About how many litres of blood are in the human body?

Antibodies are gamma globulins produced by B lymphocytes.

Pernicious anaemia occurs when the bone marrow is destroyed by drugs or radiation.

The clotting process involves a cascade of ____________________ activations.

What form of polycythaemia occurs when an individual lives in a high-altitude environment?

Match the leukocytes, labelled a. through e., with their correct characteristic. (Options may be used more than once or not at all.) a.neutrophils b.eosinophils c.basophils d.monocytes e.lymphocytes -participate in cell-mediated immune responses

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 -caused by a mutated haemoglobin

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 -thromboxane A₂

Which of these statements correctly describes red blood cells?

Why is it important that the biconcavity of the erythrocyte increases the overall surface area?

Clot formation is a temporary measure to halt blood loss from an injured vessel until the more powerful platelet plug can be formed.

Which of the following is NOT a required factor in the intrinsic clotting mechanism?