Chapter 30, Problem 4A

Summary Introduction

Introduction:

The main function of the heart is to pump the blood in the body through the blood vessels. The mammalian heart consists of four chambers, two auricle, and two ventricles, the auricles receive the blood from the body and lungs and the ventricles pump blood to the lungs and body.

Answer to Problem 4A

Correct answer:

Option (C).

Explanation of Solution

Explanation/justification for the correct answer:

Option (C) circulatory system. The main function of the circulatory system is to pump the blood in the organism and the heart is the central organ of the circulatory system. The given system represents the heart with a series of blood vessels. Hence, the correct answer is option (C).

Explanation for incorrect answer:

Option (A) excretory system. The excretory system consists of kidney, urinary bladder and other tubes, this system does not represent any of these organs. Hence, it is an incorrect answer.

Option (B) skeletal system. The muscles and the bones together form the skeletal system of the body. Hence, it is an incorrect answer.

Option (D) reproductive system. The reproductive system consists of either male gonads or female gonads. The illustration does not indicate the presence of gonad. Hence, it is an incorrect answer.