Excretion • Removal of nitrogenous wastes from the body Nitrogenous wastes • Ammonia o Most toxic o Needs more water for getting excreted o Diffuses across general body surfaces o Examples of organisms excreting ammonia: fishes‚ aquatic amphibians and aquatic insects o Such organisms are called ammonotelic. • Urea o Less toxic o Requires less water for excretion o Terrestrial adaptation for conservation of water o Ammonia Urea o Examples of organisms excreting urea: terrestrial amphibians
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capillary network. C Nutrients are returned to the bloodstream by active transport. C Water and salt are returned to the blood via the capillary network‚ in concentrations that preserve blood osmolarity. Pathway for urine: Blood vessels enter glomerulus Fluid is filtered into Bowman’s capsule. Fluid flows through: proximal tubule loop of Henle distal tubule collecting duct ureter Along the way‚ fluid volume decreases‚ salts and nutrients are returned to the bloodstream‚ [urea] increases. HOW
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Urinalysis Laszlo Vass‚ Ed.D. Version 42-0026-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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fist‚ located on either side of the spine at the lowest level of the rib cage. Each kidney contains up to a million functioning units called nephrons. A nephron consists of a filtering unit of tiny blood vessels called a glomerulus attached to a tubule. When blood enters the glomerulus‚ it is filtered and the remaining fluid then passes along the tubule. In the tubule‚ chemicals and water are either added to or removed from this filtered fluid according to the body’s needs‚ the final product being the
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The Excretory System from The Human Body Systems Series catalog # 3292 Published & Distributed by… AGC/UNITED LEARNING 1560 Sherman Avenue Suite 100 Evanston‚ IL 60201 1-800-323-9084 24-Hour Fax No. 847-328-6706 Website: http://www.agcunitedlearning.com E-Mail: info@agcunited.com 1 THE EXCRETORY SYSTEM Grade Levels: 6-9 (Review for Grades 10-12) Viewing Time: 17 minutes with video quiz INTRODUCTION This video is designed for use in grades 6 - 9 as an introduction to
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Analysis: Which sample do you suspect has diabetes mellitus? Provide your reasons. Diabetes mellitus is a condition created by the inadequate secretion of insulin from the pancreas. Insulin is a hormone that allows your body to use carbohydrates or store them for future use. Inadequate amounts of insulin causes a condition called hyperglycemia‚ which is an excessive amount of glucose in the blood stream. When the blood is filtered through the kidney‚ a large of amount of glucose is retained in the
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Shakespeare Sance Homework # 4 The factors that would cause the lung to collapse are elastic recoil and high surface tension. And the factors that prevent the lungs from collapse are negative intrapulmonary pressure and surfactant. During expiration : volume increase and pressure decrease During inspiration : volume decrease and pressure increase The role of surfactant is to decrease surface tension by more than 40 times. And it’s effect on surface tension is to prevent them from PO2
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Kidney From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Kidney (disambiguation). Kidney | | Human kidneys viewed from behind with spine removed | Latin | Ren (Greek: nephros) | Artery | renal artery | Vein | renal vein | Nerve | renal plexus | The kidneys are organs that serve several essential regulatory roles in most animals‚ including vertebrates and some invertebrates. They are essential in the urinary system and also serve homeostatic functions such
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Chapters 9 and 10 HOMEWORK 9.1 The Respiratory System 1. Summarize the role of the respiratory system. 2. Distinguish between inspiration and expiration. 3. Identify the structures of the human respiratory system. 9.2 The Upper Respiratory Tract 1. Summarize the role of the nose‚ pharynx‚ and larynx in respiration. 2. Identify the structures of the upper respiratory system and provide their function. 3. Explain how sound is produced by the larynx. 9.3 The Lower Respiratory
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25 The Urinary System: Urinary System Organs * Kidneys are major excretory organs * Urinary bladder is the temporary storage reservoir for urine * Ureters transport urine from the kidneys to the bladder * Urethra transports urine out of the body Kidney Functions * Removal of toxins‚ metabolic wastes‚ and excess ions from the blood * Regulation of blood volume‚ chemical composition‚ and pH Kidney Functions * Gluconeogenesis during prolonged fasting * Endocrine functions * Renin: regulation
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