The Nephron Unit 12: Assignment 1.

Slides:

Advertisements

Similar presentations

Excretion and the Kidneys

Advertisements

Kidney Structure & Function

3 functions of the urinary system Excrete nitrogenous wastes – Urea produced from the metabolism of proteins and nucleic acids Other animals produce ammonia.

Chapter 37: The human urinary system

The Excretory System: Urine Formation

Urinary System.

KIDNEY FUNCTIONS URINE FORMATION

Learning Intentions  I can describe the role of the kidneys.  I understand and can describe the process of filtration and reabsorption in the nephron.

28 April » The urinary system produces urine. The production of urine has three main functions: 1)Excretion of waste products of metabolism, especially.

11.3 THE KIDNEY Topic 11 Human Health & Physiology.

F214: Communication, Homeostasis and Energy The Kidney

Maintaining Water Balance The Kidneys. Homeostasis Regulation of a stable internal environment no matter where we are or what we do… We put our bodies.

R OLES OF THE NEPHRON. S OME F UN F ACTS !!! 120 ml of blood filtered by the kidney each minute! Only 1 ml of the 120 ml actually made into urine Your.

The Kidney. Where are the kidneys located? Point to them. Palpate that area of the back, the one that will make you jump if someone pokes you there. Why.

A Spot Question What are 7 Characteristics of Living things? (Hint: Mrs Gren)

Warm Question What are 7 Characteristics of Life? (Hint: Mrs Gren)

THE URINARY SYSTEM Chapter 20 – Page 774. Function  Maintain homeostasis through composition, pH, and volume  Excretes foreign substances.

A Journey Through the Nephron Jowie Papa. Kidneys and Homeostasis Functions of the loop of Henle Osmoregulation – Controls balance of water in blood and.

Formation of Urine Formation of Urine.

 Epithelial tissues  Connective Tissues  Nervous Tissues  Muscle tissues.

Excretion – Section Excretion n Process that rids the body of substances: –toxic chemicals –excess water –salts –carbon dioxide n Maintains osmotic.

16.2 Anatomy of the Kidney and Excretion There are three regions to a kidney ___________ Nephrons are the functional units of the kidney  Each kidney.

The Excretory System. Function of the Excretory System To eliminate wastes products from the body To eliminate wastes products from the body.

Module 11: Human Health and Physiology II 11.3 The Kidney.

The Excretory System. STRUCTURES  Kidneys – filter blood of wastes  Ureter – tube leading to bladder  Urinary bladder – smooth muscle bag that stores.

IGCSE BIOLOGY SECTION 2 LESSON 6. Content Section 2 Structures and functions in living organisms a) Levels of organisation b) Cell structure c) Biological.

Nitrogenous Wastes Ammonia- fish Urea- mammals Uric acid- birds.

The Kidney. The Structure of the Kidney There are three distinct regions based on the distribution of the different sections of the nephron. The human.

URINARY SYSTEM  To identify and describe the main organs of the urinary system  To describe the structure of a nephron.  To describe the 3 steps of.

The Nephron as a Unit of Kidney Function Honours

The Urinary System Glatt, 2017.

Topic 11.3 The Kidney & Osmoregulation

Urinary System 21 April 2017.

11.3 The Kidney and Nephron (Glomerulus and PCT)

Only need 50% function of kidneys

Urine Formation.

Excretion of Waste The Urinary System.

11.3 The Kidney and Excretion Excretion. The Kidney

11.3 Excretory System.

Excretory System.

EXCRETORY SYSTEM.

Excretion Definition Kidney structure & function

The Kidney – structure and function

Learning Objective: To Know The Function Of The Bowman’s Capsule

Organ of osmoregulation and excretion

How does the kidney work

Urinary System Day 4.

Topic 11.3 The Kidney & Osmoregulation

Urinary System- Anatomy and Physiology

2.5 concentration. 2.5 concentration Glomerulus The glomerulus is the functional unit of the kidney It consists of Bowman’s capsule, the proximal.

Organ of osmoregulation and excretion

Urine Formation.

Urine Formation.

Foundations of Anatomy and Physiology II

The Excretory System Biology 12 Ms. Marcos.

Urine Formation.

Kidney in Detail.

Urine Formation.

Organ of osmoregulation and excretion

Urine Formation.

Homeostasis of body fluid

Kidney in Detail.

H The Nephron as a Unit of Kidney Function

9.5 Excretory System.

Organ of osmoregulation and excretion

Presentation transcript:

The Nephron Unit 12: Assignment 1

Learning Outcomes To understand the process of ultrafiltration To begin to understand the process of Selective Reabsorption To know some signs of dehydration

http://www.youtube.com/watch?v=Z2PugQZFLR0

The Nephron

Ultrafiltration Filtering at a molecular level Glomerulus Bowman’s Capsule

Ultrafiltration Filtration of the blood to move substances into the nephron Filtered based on size Any molecule with a relative molecular mass of more than 69,000 will not be filtered.

Collagen Sodium Immunoglobulin Water Haemoglobin Urea Glucose Glycine Task: Molecule Size List these atoms/molecules in order of size and decide which will / will not be filtered at the glomerulus: Collagen Sodium Immunoglobulin Water Haemoglobin Urea Glucose Glycine

Molecule Size and Filtration The following passes through from the blood to the nephron: Water Salts (Na,K,Cl) Glucose Urea Small Amino Acids

Selective Reabsorption Ultrafiltration is non selective (i.e. any molecule small enough is filtered) Some substances are needed in the body so must stay in the bloodstream These molecules are reabsorbed from the proximal convoluted tubule into the blood.

Secretion / Absorption Secretion: Substances moving from blood to nephron. Absorption: Substances moving from nephron to blood.

Which are needed in the blood? Fill in the table: Substances needed in the blood: Substances to be excreted in the urine:

Which are needed in the blood? Fill in the table: Substances needed in the blood: Substances to be excreted in the urine: Glucose Urea Amino Acids Water Salts

Summarise the processes happening in the nephron: https://www.youtube.com/watch?v=8UVlXX-9x7Q

Dehydration: Definition?

Dehydration: List the symptoms of dehydration:

8 Common signs of dehydration https://www.youtube.com/watch?v=FuAoP0BpGGk Take notes, I’ll test you afterwards!!

Class Work Task: Complete your labelled Nephron diagram for your pass criteria. Use text books to research and make notes on: Osmoregulation Dehydration 3) Begin producing a booklet on Dehydration