Concept explainers
Introduction:
Blood is composed of 45 % of blood cells and the remaining 55 % is the plasma. There are three types of blood cells; Red blood cells (Erythrocytes), white blood cells (Leukocytes) and platelets (Thrombocytes).
Answer to Problem 1PL
Correct answer:
The correct answer is option (c) platelets.
Explanation of Solution
Explanation/justification for the correct answer:
Option (c) platelets. Platelets have no cell nucleus and they are fragments of cytoplasm. Major function of platelets is to react bleeding by clumping and initiating a blood clot, stopping further bleeding. Therefore. Option (c) is the correct answer.
Explanation for incorrect answer:
Option (a) erythrocytes. Erythrocytes are red blood cells. Erythrocytes also does not have a nucleus and contain hemoglobin which gives it a red color. The main function of red blood cells is to transport oxygen and carbon dioxide to and from the tissues. So, this option is incorrect.
Option (b) leukocytes. Leukocytes are also called white blood cells because they are colorless cells. The main function of white blood cells is to protect the body from foreign materials and diseases. So, this option is incorrect.
Option (d) plasma. Plasma is the liquid in which the blood cells and proteins are suspended. The main purpose of blood plasma is to transport nutrients, hormones and enzymes all over the body. So, this option is incorrect.
Platelets have significant functions mainly during bleeding. Hence, the correct answer is option (c) platelets.
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Chapter 41 Solutions
LABORATORY MANUAL FOR HUMAN ANATOMY & PH
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- Which of the following is the correct sequence of events in the circulation of blood? a. Heart arteries arterioles capillaries venules lymph heart b. Heart arteries arterioles capillaries veins venules heart c. Heart arteries arterioles capillaries venules veins heart d. Heart arterioles arteries capillaries venules veins heartarrow_forwardfunctional injury to endothelial cells would most likely result in which of the following? a. hemorrhage per rhexis b. thrombosis c. hematoma d. hydrothoraxarrow_forwardWhich of the following has an incorrect association? a. Plasma- water, nutrients and wastes b. White blood cells - antibodies C. Red blood cells - clotting d. Blood platelets - hemoglobinarrow_forward
- What type(s) of blood cells is (are) described with each statement? Choose from erythrocytes, leukocytes, or platelets. a. This type of blood cell has no nucleus. b. This type of blood cell survives in the bloodstream for the longest period of time. c. This type of blood cell is a key element in the immune system. d. This type of blood cell carries hemoglobin. e. This type of blood cell contains the machinery needed for clot formation.arrow_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 cell(s) can bind to oxygen and carbon dioxide? Select one or more: a.myloid stem cells b.thrombocytes c.erythrocytes d.pluripotent stem cells e.pluripotent stem cellsarrow_forward
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