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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Lymph nodes filter ______.

  1. a. blood
  2. b. lymph
  3. c. plasma
  4. d. urine

Summary Introduction

Concept introduction: Lymphatic system in the human body is a complex network of organs and tissues that help the body to get rid of all sorts of wastes and toxins produced in the body. The cardinal component of the lymphatic system is a fluid known as lymph, which is transported all over the body. Lymph is mainly composed of numerous infection-resisting white blood cells.

Explanation

Reason for the correct answer: There are several hundreds of lymph nodes present in a human body. They are seen in almost all major parts of the body including around the heart and lungs and very close to underarms and related areas. There are numerous lymphatic vessels connected with the lymph nodes that are mainly do filtering of lymph. Each of the lymph nodes is made up of a capsule of connective tissue and several white blood cells especially lymphocytes.

Option b. is given as lymph. Lymphatic system is mainly composed of fluidic lymph, an infection resisting part mainly composed of white blood cells. The filtering of lymph is done only by the lymph nodes. Therefore, option b. is correct.

Reason for incorrect answers:

Option a...

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