Homeostasis Unit 5 Sophie Bevan. Objectives Outline the assignment requirements for M3 Explain the homeostatic mechanisms for blood glucose regulations.

Slides:



Advertisements
Similar presentations
6.5 – PART II Endocrine system and homeostasis. Homeostasis review Blood pH CO2 concentration Blood glucose concentration Body temperature Water balance.
Advertisements

Endocrine Module 1b. Pancreas Gland 6 ” long Horizontal Behind stomach Upper left abdominal quadrant Both endocrine & exocrine functions.
Regulation and Control Homeostasis Objectives: outline the need for communication systems within mammals to respond to changes in the internal and external.
Glucose regulation HBS3A. Blood glucose Sugar travels in the blood as g_________, and is stored in liver and muscle as g__________. Glucose is important.
THE ENDOCRINE PANCREAS: Located partially behind the stomach, the pancreas is a mixed gland composed of both endocrine and exocrine cells. Located partially.
Introduction to Homeostasis And Controlling Blood Glucose Levels.
Homeostatic Regulation of Blood Calcium and Blood Glucose.
Objectives Students should learn: How and why your blood sugar rises and falls that the pancreas monitors and controls the level of glucose in the blood.
Endocrine Physiology PANCREAS Dr. Meg-angela Christi M. Amores.
Hormones and the regulation of blood glucose
Glucose Regulation Noadswood Science, Glucose Regulation  To understand how glucose is controlled within the body Tuesday, August 11, 2015.
Hormones that Affect Blood Sugar Insulin, glucagon, epinephrine, norepinephrine and cortisol.
What is blood glucose? Glucose is a type of sugar used by the body to provide energy. Sometimes there is too much glucose in the blood, and sometimes there.
Insulin Receptor. Pancreas is the endocrine organ that produces and releases insulin.
Interactions between the Liver and Pancreas. Explain the control of blood glucose concentration, including the roles of glucagon, insulin and α and β.
Jovonne Carr Cheyenne Hockenhull
Control of blood sugar.
GLUCOSE.
The regulation of blood glucose Starter:  Write down as many things as you can think about that affect your blood sugar levels 04/10/2015.
Negative Feedback Regulation of the Secretion of Glucagon and Insulin Process Diagrams Step-by-Step Copyright © 2007 by John Wiley & Sons, Inc.
Nutrition and Metabolism Negative Feedback System Pancreas: Hormones in Balance Insulin & Glucagon Hormones that affect the level of sugar in the blood.
NEXT. On the next slide follow the numbers And decide what happens in the body after a meal. click once on the number to check if your answer is correct.
8.2 Hormones that Affect Blood Sugar. Review What is the Endocrine System? What are the two types of hormones? How do they differ in terms of hormone-
The Endocrine System Aims: Must be able to outline the main components of the endocrine system and their roles. Should be able to explain how hormones.
HOMEOSTASIS A state of balance in the body. Homeostasis is the maintenance of a steady state in the body despite changes in the external environment The.
How is blood glucose regulated by negative feedback regulation? By hormones Made by endocrine gland- Pancreas.
Generously shared by
Endocrine Block Glucose Homeostasis Dr. Usman Ghani.
ENDOCRINE PANCREAS. Anatomy Location Pancreatic Islets (of Langerhans) –Alpha cells –Beta cells –Delta cells –F-cells.
* When we eat food, especially carbohydrates, the body converts that food into the preferred source of cellular energy, glucose.
Responses of Cells to Environmental Influences By Kari Edge.
The control of blood sugar 1. Blood sugar levels are higher than normal after a meal is digested. 2.
Glucose Homeostasis By Dr. Sumbul Fatma.
Nerves, Hormones, and Homeostasis Topic 6.5. The vertebrate nervous system has two main divisions: · Central Nervous System (CNS): consists of the brain.
By, Shakree Gibson. Location The pancreas is located deep in the abdomen, between the stomach and the spine. It lies partially behind the stomach. The.
The Pancreas.
Hormones and Homeostasis. Homeostasis  Maintaining a stable internal environment despite unstable external conditions  Examples of systems with homeostasis.
Homeostasis Regulation of Blood Glucose. Homeostasis Animals possess a nervous system and a hormonal system that interact in order to maintain the constancy.
Control of Blood Glucose. Anatomy to Keep in Mind.
Diabetes. PANCREAS Regulates blood sugar levels and glucose metabolism Secretes 2 hormones Insulin-allows blood sugar (glucose) to be taken out of the.
Homeostasis of blood sugar, breathing and blood pressure
Most signal receptors are plasma membrane proteins.
Mindarie Senior College 3A/3B HUMAN BIOLOGICAL SCIENCE HOMEOSTASIS HOMEOSTATIC MECHANISMS.
Regulating blood glucose levels
LT- Today, we will analyze how feedback mechanisms (loops) help to maintain homeostasis by applying our understanding to how glucose levels are controlled.
Biological Feedback Systems
Blood Sugar Regulation. Remember me!? Why does your body need this molecule? How is it used?
The Pancreas By Margaret Sheekey Histology of the Pancreas The pancreas is in the abdomen, just below the stomach It is to the right of the liver when.
Life Sciences-HHMI Outreach. Copyright 2009 President and Fellows of Harvard College. What is homeostasis? - Ability of an organism to maintain its internal.
Look Mama, It’s Alive! Human Feedback Systems. Question True or False: Each body system works in isolation.
Ch. 14 Part 7 Blood Glucose Regulation. Glucose Carbohydrates transported in blood as soluble molecule called GLUCOSE – Monosaccharide – Ring structure.
Endocrine Block Glucose Homeostasis Dr. Usman Ghani.
Section 3: Feedback Mechanisms
Endocrine System, Hormones, and Homeostasis
Blood Glucose Noadswood Science, 2016.
Glucose Homeostasis By Dr. Sumbul Fatma.
The Endocrine System Pancreatic Islets
Homeostasis
Maintaining an Internal Balance
Endocrine Disorders 11/11/2018
How the pancreas controls blood sugar levels
Unit 3: Homeostasis Topic: Glucose Regulation
Hormonal Regulation of Carbohydrates
Communication and Homeostasis
Blood glucose control mechanisms
Plasma Glucose Homeostasis
Insulin and Glucagon Kamilah Gonzalez.
Plasma Glucose Homeostasis
Hormones that Affect Blood Sugar
Presentation transcript:

Homeostasis Unit 5 Sophie Bevan

Objectives Outline the assignment requirements for M3 Explain the homeostatic mechanisms for blood glucose regulations in the body

To Do (M3) Make your own notes on the regulation of the following for your assignment - Blood Glucose Regulation - Heart Rate Regulation - Body Temperature Regulation - Respiratory rate Regulation

Blood Glucose Regulation ‘’The process by which the levels of blood sugar, primarily glucose, are maintained by the body’’

Blood Glucose Regulation Blood sugar levels are regulated by negative feedback in order to keep the body in homeostasis _______________ normal level (body in equilibrium)

Blood Glucose Regulation Glucose levels are monitored by the pancreas Pancreas contains specialised cells called the Islets of Langerhans Islets of Langerhans release specialised cells (either alpha or beta) and hormones (insulin and glucagon)

Blood Glucose Levels too High… Beta cells released from Islets of Langerhans Beta cells release Insulin This causes the liver to convert more glucose into glycogen (sugar storage molecule)

Blood Glucose Levels too Low…. Alpha cells released from Islets of Langerhans Alpha cells of the pancreas release glucagon Glucagon is a hormone whose effects on liver cells act to increase blood glucose levels They convert glycogen into glucose (this process is called glycogenolysis). The glucose is released into the bloodstream, increasing blood sugar levels.

High Blood Glucose Levels When levels of blood sugar rise, whether as a result of glycogen conversion, or from digestion of a meal, a different hormone is released from beta cells found in the Islets of Langerhans in the pancreas. This hormone, insulin, causes the liver to convert more glucose into glycogen (this process is called glycogenesis), and to force about 2/3 of body cells (primarily muscle and fat tissue cells) to take up glucose from the blood through the GLUT4 transporter, thus decreasing blood sugar. When insulin binds to the receptors on the cell surface, vesicles containing the GLUT4 transporters come to the plasma membrane and fuse together by the process of exocytosis and thus enabling a facilitated diffusion of glucose into the cell. As soon as the glucose enters the cell, it is phosphorylated into Glucose-6- Phosphate in order to preserve the concentration gradient so glucose will continue to enter the cell. Insulin also provides signals to several other body systems, and is the chief regulatory metabolic control in humans

Low Blood Glucose Levels The levels of glucose in the blood are monitored by the cells in the pancreas's Islets of Langerhans. If the blood glucose level falls to dangerous levels (as in very heavy exercise or lack of food for extended periods), the Alpha cells of the pancreas release glucagon, a hormone whose effects on liver cells act to increase blood glucose levels. They convert glycogen into glucose (this process is called glycogenolysis). The glucose is released into the bloodstream, increasing blood sugar levels.