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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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Tears are an _______ secretion released by specialized ______ tissue cells.

  1. a. endocrine; epithelial
  2. b. endocrine; connective
  3. c. exocrine; epithelial
  4. d. exocrine; connective

Summary Introduction

Introduction: The epithelial tissue is a type of tissue that helps to cover the surface of the body and line its internal cavities and tubes. The major functions of the epithelial cells are secretion, absorption, protection, and sensing. The glands are the secretory organs or tissues that are developed from the epithelial tissues. They are classified mainly into two types based upon their structure and the type of secretion—endocrine and exocrine glands.

Explanation

Reason for correct answer:

The epithelial cells are said to be specialized cells, as they cover the surface of the whole body. The glands are the secretory organs or tissues that are developed from the specialized epithelial tissues. They are classified mainly into two types based upon their structure and the type of secretion: endocrine and exocrine glands.

The gland that secretes the hormones into interstitial fluid for the supply of blood all over the body is called as endocrine gland. The gland that has the tubes or ducts that help to transport their secretion onto an inner or outer surface is called as exocrine gland. The exocrine secretions consist of tears, mucus, digestive enzymes, saliva, breast milk, and earwax. Epithelial tissues have the ability to generate a large amount of proteins called keratin, which is the source of feathers, hair, nails, and hooves.

Option c. is given as “exocrine; epithelial”.

The epithelial tissue forming the glands that contains the tubes or ducts that help to transport their secretion onto an inner or outer surface is called as exocrine glands. The exocrine secretions consist of tears, mucus, digestive enzymes, saliva, breast milk, and earwax...

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