Human Biology
Human Biology
15th Edition
ISBN: 9781259689796
Author: Sylvia Mader, Michael Windelspecht
Publisher: McGraw-Hill Education
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Chapter 7, Problem 1A
Summary Introduction

Introduction:

Spleen is present at the upper left corner of abdominal cavity and is the largest organ. It is a bean like structure that has red pulp and white pulp. It helps in removal of worn out RBCs

Expert Solution & Answer
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Answer to Problem 1A

Correct answer:

The function of spleen is to remove worn-out red blood cells. Therefore, option (b) is correct.

Explanation of Solution

Reasons for the correct statement:

As the spleen purifies the blood of old RBCs and debris and is present at the upper left corner of abdominal cavity and is the largest organ. It is a bean like structure that has red pulp and white pulp.

Option (b) is given as “removes worn-out cells”.

As “the spleen helps in the cleaning of the blood by removing old and worn out RBCs”, it is the right answer.

Hence, option (b) is correct.

Reasons for the incorrect statements:

Option (a) is given as “produces T-cells”.
T-cells are produced by the thymus. So, it is a wrong answer.

Option (c) is given as “produces immunoglobulins”.
Immunoglobulins are produced by the WBCs. So, it is a wrong answer

Option (d) is given as “produces macrophages”.
Monocytes which are produced by the bone marrow transform into macrophages. So, it is a wrong answer

Option (e) is given as “regulate the immune system”.
Spleen does not regulate the immune system. So, it is the wrong answer

Hence, options (a), (c), (d) and (e) are incorrect.

Conclusion

Conclusions:

The function of spleen is to remove worn-out red blood cells.

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