
Concept explainers
Introduction: The body of humans is composed of several different types of cells that function together to create tissues and subsequently organ systems. The physical substances of human body are composed of extracellular materials and living cells and it is organized into organs, tissues, and organ system.

Answer to Problem 1CA
Correct answer: c. organ.
Explanation of Solution
Reason for the correct answer:
An organ is defined as a distinguished structure that contains cells and tissues to perform a specific function of the organism.
Option c. is given as “organ”.
Hence, the correct answer is option c.
Reasons for the incorrect answers:
Option a. is given as “organelle”.
An organelle is one small portion of cells. It has a very specific function. An organelle does not grouped together and performs specialized functions. Therefore, option a. is incorrect.
Option b. is given as “cell”.
A cell is the basic functional, biological, and structural unit of life. It consists of fundamental molecules of life. The cell is not grouped together and performs specialized functions. Therefore, option b. is incorrect.
Option d. is given as “organ system”.
An organ system is a group of organ that functions together to perform one or more functions. The organ system does not group together and performs specialized functions. Therefore, option d. is incorrect.
Hence, options a., b., and d. are incorrect.
An organ is the two or more types of tissues grouped together and perform specialized functions.
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Chapter 6 Solutions
Hole's Essentials of Human Anatomy & Physiology
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