LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Chapter 21, Problem 10MC
Summary Introduction
Introduction:
Erythrocytes are produced by a process called erythropoiesis. The production of erythrocytes is controlled by the hormone erythropoietin (EPO). The process of erythropoiesis begins from myeloid stem cells.
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Mature erythrocytes
Select one:
a. do not contain protein.
b. are actually just cellular fragments.
c. mature from cells called megakaryocytes.
d. have a centrally located nucleus.
e. contain hemoglobin in their cytoplasm.
Which one of the following influences is not associated with thrombus formation?
A. Endothelial injury
B. Blood hypocoagulability
C. Stasis of blood flow
D. Turbulence associated with blood flow
Prothrombin which helps in clotting of blood is released by:
A.
lymphocytes
B.
erythrocytes
C.
monocytes
D.
blood platelets
Chapter 21 Solutions
LooseLeaf for Human Anatomy
Ch. 21 - Erythrocytes make up what average percentage of...Ch. 21 - What are the protective functions of the blood?Ch. 21 - Prob. 3WYLCh. 21 - Prob. 4WYLCh. 21 - Why does an erythrocyte lack cellular organelles,...Ch. 21 - Prob. 6WYLCh. 21 - Prob. 7WYLCh. 21 - Prob. 8WYLCh. 21 - Prob. 9WYLCh. 21 - Prob. 10WYL
Ch. 21 - Prob. 11WYLCh. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 1MCCh. 21 - Prob. 2MCCh. 21 - Prob. 3MCCh. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 6MCCh. 21 - Prob. 7MCCh. 21 - Prob. 8MCCh. 21 - Prob. 9MCCh. 21 - Prob. 10MCCh. 21 - Prob. 1CRCh. 21 - Prob. 2CRCh. 21 - Prob. 3CRCh. 21 - Prob. 4CRCh. 21 - Prob. 5CRCh. 21 - Prob. 6CRCh. 21 - Prob. 7CRCh. 21 - Prob. 8CRCh. 21 - Prob. 9CRCh. 21 - Prob. 10CRCh. 21 - Prob. 1DCRCh. 21 - Prob. 2DCR
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- functional injury to endothelial cells would most likely result in which of the following? a. hemorrhage per rhexis b. thrombosis c. hematoma d. hydrothoraxarrow_forwardThe term "hematopoiesis" refers to: Select one: a. the mechanisms that prevent blood loss O b. the process of blood cell formation O c. the rupture of red blood cells O d. a disease in which there is insufficient blood cell productionarrow_forwardWhich of the following would lead to increased erythropoiesis? Select one: a. Increased erythropoietin levels b. Increased blood pressure c. Increased environmental O2 levels d. Increased blood pH e. Increased CO2 levelsarrow_forward
- A newborn baby at 34 weeks gestation dies of acute umbilical cord strangulation. At autopsy, examination of hepatic tissue is most likely to show abundant production of which of the following cell types? a. Eosinophils b. Erythrocytes c. Lymphocytes d. Neutrophils e. Plateletsarrow_forwardFor a person whose hematocrit is 45%, a. plasma volume would be 55% of total blood volume b. plasma volume would be 45% of total blood volume c. red blood cell volume would be 55% of total blood volume d. white blood cell volume would be 45% of total blood volume All of the following characteristics of platelets are true EXCEPT a. Exhibit many vesicles b. Have nucleus c. Platelets are fragments of megakaryocytes d. Smallest size compared to other blood cellular components of 2- 4 μm If someone has no megakaryocytes, he/she will a. not be able to phagocytize bacteria b. have a reduced ability to prevent blood loss c. not be able to make red blood cells d. not be able to make white blood cellsarrow_forwardWhich of the following statements about erythropoietinis true?a. It facilitates the proliferation and differentiationof the erythrocyte lineage.b. It is a hormone produced by the thyroid gland.arrow_forward
- Which of the following might trigger erythropoiesis? a. decreased tissue demand for oxygen. b. Blood oxygen levels fall below normal. c. moving to a lower altitude. d. an increased number of RBCs.arrow_forwardA blockage in a blood vessel caused by a mass of matter in the blood is called a(n): a. thrombocyte. b. thrombosis. c. embolus. d. thrombus. e. embolism.arrow_forward
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