Erythrocytes, leukocytes, and platelets
The cellular elements of the blood are the:
Erythrocytes
The hematocrit is a clinical measure of the relative amount of ________ in blood.
Vasoconstriction
A deep cut to the skin damages blood vessels. What is the first step in preventing excessive blood loss through the wound?
Platelets
Which hemostasis-related item(s) is/are formed when fragments break off a megakaryocyte?
Coagulation factors
Hemophilia is a blood disorder resulting from defects in which of the following?
Liver
The source of most plasma proteins is the:
5-6
The total volume of blood in the body of a 70-kg man is approximately ______ liters.
Erthropoietin
Red blood cell production is regulated by the hormone:
Liver & kidney
Thrombopoietin is produced in the:
Red bone marrow
In normal adults, red blood cells are formed in:
Kidney
The primary organ where erythropoietin is produced is the:
White blood cell development varies with the specific needs of the body
A unique aspect of hematopoiesis is that:
Carry oxygen from the lungs to the body's cells
The function of red blood cells is to:
Four protein chains & four heme groups
A hemoglobin molecule is composed of:
Hemoglobin
The majority of the protein inside a red blood cell is:
Globulins
A category that includes clotting factors and enzymes:
Lymphocytes
Often called immunocytes, these cells direct the activities of the immune system.
Water and proteins
The two main components of plasma are:
Low oxygen in tissues
What is the stimulus for synthesis and release of erythropoietin?
55%
Blood is approximately _______ plasma by volume.
Thrombopoietin
The growth and maturation of megakaryocytic is regulated by the glycoprotein:
Erythropoietin
The hormones that regulates the production of red blood cells is:
Erythrocyte
Which type of mature blood cell has no nucleus?
Four globin protein chains, each one with a heme group associated with it.
A normal hemoglobin molecule consists of how many globin proteins and heme groups?
Carry oxygen
The function of hemoglobin is to:
Erythropoiesis
The process of red blood cell production is called:
Serotonin and thromboxane A2
Which of the following is/are vasoconstrictors?
Antithrombin III and haparin
Which of the following are the two anticoagulants produced by the body?
Fragments of large cells
Platelets are:
Activation of proenzyme exposed to collagen
The intrinsic pathway of coagulation is activated by the:
Dissolve clots
The process of fibrinolysis:
Formation of a platelet plug
Hemostasis have three major steps. The first is vasoconstriction and the final step is coagulation. What occurs between these two steps?
4 months
The avg. life span of a red blood cell is:
Albumins
The most abundant proteins in blood plasma are: