Explanation Characters: Testosterone Hormones Paracrine Secondary sexual character To explain: The reason why testosterone can be considered both an endocrine and a paracrine secretion of the testes. Testosterone is a male reproductive hormone that is secreted by the testes, which acts as both paracrine and endocrine in function. Testosterone as paracrine in function: Hormones which exert their effect only at their vicinity of secretion site are termed as paracrine hormones. Testosterone secreted by the testes influences the sertoli cells inside the testes to produce spermatozoa, thereby the testosterone function as a paracrine hormone...

9th Edition

ISBN: 9781260256000

Author: SALADIN

Publisher: MCG

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Question

Chapter 27, Problem 1TYC

Summary Introduction

Summary:

Testosterone, a male reproductive hormone, works as both endocrine and paracrine in function. It is an important hormone to bring the male fertility and secondary sexual characters. Imbalance in testosterone production or lack of testosterone leads to hypogonadism and male infertility.

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Chapter 27, Problem 10WWTS

Chapter 27, Problem 2TYC

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Chapter 27 Solutions

Anatomy and Physiology

Ch. 27.1 - Essential characteristics of sexual reproduction;...Ch. 27.1 - Multiple functions of the male and female...Ch. 27.1 - Prob. 3AYLO Ch. 27.1 - Prob. 4AYLO Ch. 27.1 - Prob. 5AYLO Ch. 27.1 - Fates of the mesonephric and paramesonephric ducts...Ch. 27.1 - Structures of the embryonic genital tubercle,...Ch. 27.1 - Prob. 8AYLO Ch. 27.2 - Anatomy and functions of the scrotum and spermatic...Ch. 27.2 - Prob. 2AYLO

Ch. 27.2 - Prob. 3AYLO Ch. 27.2 - The germinal epithelium of the seminiferous...Ch. 27.2 - The arterial supply and venous drainage of the...Ch. 27.2 - Gross anatomy of the epididymis; the series of...Ch. 27.2 - Three sets of male accessory glands: their...Ch. 27.2 - Prob. 8AYLO Ch. 27.2 - Prob. 9AYLO Ch. 27.3 - Definitions of puberty and adolescence; the...Ch. 27.3 - Prob. 2AYLO Ch. 27.3 - Prob. 3AYLO Ch. 27.3 - Prob. 4AYLO Ch. 27.3 - Changes in the levels of testosterone, inhibin,...Ch. 27.3 - Prob. 6AYLO Ch. 27.4 - Prob. 1AYLO Ch. 27.4 - Why meiosis is necessary in sexually reproducing...Ch. 27.4 - Prob. 3AYLO Ch. 27.4 - Prob. 4AYLO Ch. 27.4 - The origin of primordial germ cells, their...Ch. 27.4 - Prob. 6AYLO Ch. 27.4 - Prob. 7AYLO Ch. 27.4 - Prob. 8AYLO Ch. 27.4 - Prob. 9AYLO Ch. 27.4 - Prob. 10AYLO Ch. 27.4 - Prob. 11AYLO Ch. 27.5 - Blood vessels of the penis and how they function...Ch. 27.5 - Prob. 2AYLO Ch. 27.5 - Prob. 3AYLO Ch. 27.5 - The mechanism of erection including the roles of...Ch. 27.5 - The physiological state of the male in the plateau...Ch. 27.5 - Prob. 6AYLO Ch. 27.5 - Prob. 7AYLO Ch. 27 - The ductus deferens develops from the _______.of...Ch. 27 - The protein that clots and causes the stickiness...Ch. 27 - The expulsion of semen occurs when the...Ch. 27 - Prob. 4TYR Ch. 27 - The penis is attached to the pubic arch by crura...Ch. 27 - The first hormone secreted at the onset of puberty...Ch. 27 - Prob. 7TYR Ch. 27 - Four spermatozoa arise from each a. primordial...Ch. 27 - The point in meiosis at which sister chromatids...Ch. 27 - Blood is forced out of the penile lacunae by...Ch. 27 - Prob. 11TYR Ch. 27 - Prob. 12TYR Ch. 27 - Prob. 13TYR Ch. 27 - Prob. 14TYR Ch. 27 - Prob. 15TYR Ch. 27 - Prob. 16TYR Ch. 27 - Prob. 17TYR Ch. 27 - Prob. 18TYR Ch. 27 - Erection of the penis occurs when nitric oxide...Ch. 27 - A sperm penetrates the egg by means of enzymes in...Ch. 27 - crypto-Ch. 27 - Prob. 2BYMV Ch. 27 - Prob. 3BYMV Ch. 27 - Prob. 4BYMV Ch. 27 - Prob. 5BYMV Ch. 27 - meio-Ch. 27 - Prob. 7BYMV Ch. 27 - Prob. 8BYMV Ch. 27 - some Ch. 27 - Prob. 10BYMV Ch. 27 - Testosterone is secreted by the nurse cells of the...Ch. 27 - Prob. 2WWTS Ch. 27 - Prob. 3WWTS Ch. 27 - Prob. 4WWTS Ch. 27 - A high testosterone level makes a fetus develop a...Ch. 27 - Prob. 6WWTS Ch. 27 - Prob. 7WWTS Ch. 27 - Prob. 8WWTS Ch. 27 - Male menopause is the cessation of sperm...Ch. 27 - Prob. 10WWTS Ch. 27 - Prob. 1TYC Ch. 27 - Prob. 2TYC Ch. 27 - Prob. 3TYC Ch. 27 - Why is it possible for spermatogonia to be outside...Ch. 27 - A 68-year-old man taking medication for...

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Testosterone, a male reproductive hormone, works as both endocrine and paracrine in function. It is an important hormone to bring the male fertility and secondary sexual characters. Imbalance in testosterone production or lack of testosterone leads to hypogonadism and male infertility.

Solution Summary: The author explains that testosterone is both an endocrine and paracrine hormone secreted by the testes.

Concept explainers

Summary: Testosterone, a male reproductive hormone, works as both endocrine and paracrine in function. It is an important hormone to bring the male fertility and secondary sexual characters. Imbalance in testosterone production or lack of testosterone leads to hypogonadism and male infertility.

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Chapter 27 Solutions

Summary:

Testosterone, a male reproductive hormone, works as both endocrine and paracrine in function. It is an important hormone to bring the male fertility and secondary sexual characters. Imbalance in testosterone production or lack of testosterone leads to hypogonadism and male infertility.