Exam 11: The Blood

Of the cells identified with numbers 4-12, which type is the most abundant in the blood?

____________________ anemia results from the failure of the bone marrow to produce sufficient numbers of red blood cells.

Polycythemia can occur in association with chronic lung disease.

The tissue phagocytes called macrophages are derived from

Match each hemostasis step with the correct characteristic. 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 hemostasis f.Forms the meshwork of the clot g.Plasma protein activated by factor X h.Second step in hemostasis i.Released from injured tissues; activates extrinsic clotting pathway j.Third step in hemostasis -Fibrin

Myeloid stem cells give rise to all leukocytes except

The order of development of an erythrocyte is as follows: pluripotent stem cells give rise to _________ cells, which give rise to _______, which give rise to ________, which finally give rise to erythrocytes.

Which statement about erythrocytes is incorrect?

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

Which plasma globulins are the antibodies?

Which of the following is not a function of thrombin?

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

Most of the old erythrocytes are removed from the circulation as they rupture, passing through the narrow capillaries of the ____________________ (specific organ).

Which of the following is not a plasma protein?

Detail the life cycle of an erythrocyte, including: (1) specific cells from which they are derived, (2) site of development, (3) name and source of chemicals that stimulate their production, and (4) length of life span and why this life span is limited.

By far, the most abundant cellular elements in the blood are the ____________________.

Only Rh-negative individuals produce anti-Rh antibodies.

What forms the meshwork of a clot?

Match each hemostasis step with the correct characteristic. 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 hemostasis f.Forms the meshwork of the clot g.Plasma protein activated by factor X h.Second step in hemostasis i.Released from injured tissues; activates extrinsic clotting pathway j.Third step in hemostasis -Vascular spasm

Define hemostasis and describe its three phases.