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Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Hormones and stress
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings The adrenal glands mobilize responses to stress Hormones from the adrenal glands help maintain homeostasis when the body is stressed Adrenal medulla –Nervous signals from the hypothalamus stimulate secretion of epinephrine and norepinephrine –These quickly trigger the fight or flight response
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Adrenal cortex –Chemical signals (ACTH) stimulate secretion of corticosteroids, including glucocorticoids and mineralocorticoids –Corticosteroids boost blood pressure and energy in response to long-term stress –High blood pressure for extended periods of time can lead to heart and circulation problems (heart attack and stroke).
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings How the adrenal glands control our responses to stress (page 441) Figure 26.10 Adrenal gland Mineralocorticoids Adrenal medulla SHORT-TERM STRESS RESPONSE 1. Glycogen broken down to glucose; increased blood glucose 2.Increased blood pressure 3.Increased breathing rate 4.Increased metabolic rate 5.Change in blood-flow patterns, leading to increased alertness and decreased digestive and kidney activity STRESS Glucocorticoids ACTH Adrenal medulla Adrenal cortex Kidney Nerve signals Spinal cord (cross section) Nerve cell Epinephrine and norepinephrine LONG-TERM STRESS RESPONSE 1. Retention of sodium ions and water by kidneys 2.Increased blood volume and blood pressure 1. Proteins and fats broken down and converted to glucose, leading to increased blood glucose 2.Immune system may be suppressed Hypothalamus Releasing hormone Anterior pituitary Blood vessel Adrenal cortex
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Anaphylaxis is a severe allergic reaction that occurs rapidly and causes a life-threatening response involving the whole body. Because the reaction is really an overreaction, this is sometimes called a hypersensitivity response. Adrenaline is used to counter act the histamine release that can kill (by reducing blood flow to tissues of the body). The Epipen (page 445) is used to deliver epinepherine Alergies that can kill - Anaphylaxis Figure 26.11
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings PowerPoint TextEdit Art Slides for Biology, Seventh Edition Neil Campbell and.
Hormonal regulation of responses to stress. Adrenal Glands “Adrenal” = At the kidneys. The adrenal gland has an inner core called the adrenal medulla.
There are two basic types of regulatory systems Endocrine system Nervous system Regulatory systems These two system are structurally, chemically and functionally.
Suprarenal Glands Divided into two parts; each with separate functions Suprarenal Cortex Suprarenal Medulla.
The Endocrine System chemical messages (hormones) that are released into the blood Hormones control several major processes Reproduction - gametogenesis,
Importance of the Endocrine System. Chemical Controls The endocrine system consists of a number of glands and their respective hormones.The endocrine.
Hormones that Affect Blood Sugar Insulin, glucagon, epinephrine, norepinephrine and cortisol.
Organs of the Endocrine System
Hormones that Affect Blood Sugar
9.3 Hormonal Regulation of Stress Response and Blood Sugar
Topic 14: Addendum on Thyroid Hormones. Bernard Courtois – biochemist who discovered iodine in 1811.
Hormones that Affect Blood Sugar. 2 parts of the endocrine system affect blood sugar levels – cells in the pancreas and the adrenal glands The pancreas.
Students Get handout – Ch 45 Guided Notes Turn in Case Study – box
Adrenal Glands By: Robin Du and Nikki Mac Adrenal Glands Location of the Gland Above the kidneys Two Layers: Cortex, and Adrenal Medulla.
Hormones that Affect Blood Sugar and Stress Diana Pham & Anny Tang February 21, 2013.
The Endocrine System and Hormonal Control
C HAPTER 15 Section 15.2 Hormones that Affect Blood Sugar.
Hormones and the Endocrine System
End Show Slide 1 of 50 Copyright Pearson Prentice Hall Biology.
PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing.
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