Concept explainers
Introduction:
Blood is a connective tissue which connects all the organs and organ systems of the body. It consists of cells and cell fragments which are suspended in fluid matrix plasma. It is the most visible and important component of the human circulatory system. Red blood cells, white blood cells, and platelets are present in the blood.
Answer to Problem 1MCQ
Correct answer:
White blood cells are responsible for the production of antibodies. Hence, the correct answer is option b..
Explanation of Solution
Reason for correct answer:
Option b. is given as “White blood cell: produces antibodies.”
White blood cells are soldier cells and are an integral part of the immune system. They fight against any foreign antigen which enters inside the body. This defense mechanism secretes certain chemicals which are known as antibodies. These antibodies fight against the antigens and remain in the body in a dormant state. These antibodies become active when similar antigens enter the body again to fight against it.
Reason for incorrect answer:
Option a. is given as, “Red blood cell: initiates clotting.”
Red blood cells are responsible for the transportation of oxygen and carbon dioxide in and out of the cells with the help of hemoglobin. Clotting is initiated by cell fragments platelets present in the blood. Hence, option a. is incorrect.
Option c. is given as, “Platelet: carries oxygen and carbon dioxide.”
Platelets are responsible for clotting blood in case of any injury to the blood vessels. Oxygen and carbon dioxide is transported by hemoglobin present in the red blood cells. Hence, option c. is incorrect.
Option d. is given as “plasma: engulfs and destroys foreign bodies.”
Plasma is the fluid matrix of blood in which all the blood cells and cell fragments are suspended. Engulfing and destroying foreign bodies are carried out by the white blood cells as their defense mechanism. Hence, option d. is incorrect.
Hence, the options a.,c.and d. are incorrect.
Antibodies are specifically produced by the white blood cells. Thus, the correct option is b..
Want to see more full solutions like this?
Chapter 27 Solutions
BIOLOGY: ESSENTIALS >LL< W/ CONNECT
- What are the cellular components of blood? Where do the various kinds come from?arrow_forwardWhat 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_forwardWhat do myeloblasts, lymphoblasts, and monoblasts have in common? a. They are immature cells that develop into white blood cells. b. They are immature cells that develop into red blood cells. c. They are found in the circulating blood. d. They are immature cells that develop into plateletsarrow_forward
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning