Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 33, Problem 7MCQ
Summary Introduction

Introduction:

Excretion is the process in which the elimination of toxic substances and the metabolic wastes from the body takes place. The process is performed by the kidneys, and the regulation of kidney function is done by several hormones.

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Which of the following is/are true concerning kidney structure?   a. The 'hilum' is the concave part of the kidney through which everything entering or leaving the kidney goes   b. The kidney is surrounded by a thin connective tissue capsule   c. Urine collects in the renal sinus   d. The renal medulla contains the renal corpuscles   e. Each kidney contains about a million nephrons
The macula densa is/are: a. present in the renal medulla. b. dense tissue present in the outer layer of the kidney. c. cells present in the DCT and collecting tubules. d. present in blood capillaries.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The thirst mechanism is mediated by osmoreceptors located in the cerebral cortex. b. The sensible water loss includes the water lost from the body via the skin and the respiratory system. c. The main hormone that regulates fluid balance is antidiuretic hormone (ADH). d. Atrial natriuretic peptide promotes water retention in the kidneys and increases the amount of water in the body. e. Dehydration is characterized by a decreased volume and increased osmolarity of the ECF
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Excretory System; Author: Amoeba Sisters;https://www.youtube.com/watch?v=q5qaGHfdmYM;License: Standard youtube license