Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve...

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Endocrine System Hormones & Homeostasis

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Transcript of Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve...

Page 1: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Endocrine SystemHormones

& Homeostasis

Page 2: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Regulation How we maintain homeostasis

nervous system nerve signals control body functions

endocrine system hormones chemical signals control body functions

Page 3: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Nervous vs. Chemical Regulation of Homeostasis

Nervous System Endocrine System

Mode of action

Neurons and neurotransmitters

Glands and hormones

Speed of action

Quick Slow

Duration of action

Short Long

Specificity Targets specific organs

Carried to all organs of the body

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Page 4: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

A few glands… Pituitary

many hormones: master gland

Controlled by the hypothalamus

Pancreas insulin, glucagon

Stomach gastrin

Ovary Estrogen,

progesterone Testes

testosterone

Page 5: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.
Page 6: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Responding to hormones Lock and key system

hormone fits receptor on “target” cell

targetcell

non-targetcells

secretingcell

can’tread

signal

can’tread

signal

Page 7: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

2 Hormone Signaling Pathways Protein hormones

Hydrophilic/water-soluble

Bind to a receptor on cell membrane

Activate secondary messengers

Steroid hormones Hydrophobic/lipid-

soluble Go through cell

membrane Bind to receptors

INSIDE the cell

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Page 8: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Hormone Signaling Pathways

Protein hormones

Steroid hormones

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Page 9: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

Regulation of Hormone Secretion Antagonistic hormone pairs maintain

homeostasis through negative feedback Analogy: thermostat Examples: blood sugar level, blood

calcium level, acid in stomach.

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Page 10: Endocrine System Hormones & Homeostasis Regulation How we maintain homeostasis nervous system nerve signals control body functions endocrine system.

liver

pancreas

liver

Regulation of Blood Glucose

blood glucose level(90mg/100ml)

insulin

liver cells take

up glucosefrom blood

liver storesglucose as glycogen

(dehydration synthesis)

glucagon

pancreas

liver breaks glycogen into glucose (degradation

hydrolysis) and releases into blood

high

low

Negative FeedbackEndocrine System Control


Nervous/Endocrine Systems. Function of the Nervous System Coordinates organ system activities to help maintain homeostasis. – Homeostasis is the body’s.

Nervous/Endocrine Systems. Function of the Nervous System Coordinates organ system activities to help maintain homeostasis. – Homeostasis is the body’s.

ENDOCRINE SYSTEM. Endocrine system maintains homeostasis: –Growth, maturation, reproduction, energy, metabolism (physical and chemical changes that.

ENDOCRINE SYSTEM. Endocrine system maintains homeostasis: –Growth, maturation, reproduction, energy, metabolism (physical and chemical changes that.

Homeostasis Endocrine System Nervous System

Homeostasis Endocrine System Nervous System

The Endocrine system Glands and hormones. Endocrine system 1. Functions: Producing hormones to help maintain homeostasis 2.Parts of endocrine system:

The Endocrine system Glands and hormones. Endocrine system 1. Functions: Producing hormones to help maintain homeostasis 2.Parts of endocrine system:

Unit 4: Homeostasis Chapter 9: The Endocrine System.

Unit 4: Homeostasis Chapter 9: The Endocrine System.

The Endocrine System - ESWESTSIDE€¦ · The Endocrine System Objectives: Identify the contributions of the endocrine system to homeostasis Discuss the chemical composition of hormones

The Endocrine System - ESWESTSIDE€¦ · The Endocrine System Objectives: Identify the contributions of the endocrine system to homeostasis Discuss the chemical composition of hormones

The Endocrine System Chapter 10. “Control system” along with nervous system Helps maintain homeostasis Allows for communication among cells Endocrine.

The Endocrine System Chapter 10. “Control system” along with nervous system Helps maintain homeostasis Allows for communication among cells Endocrine.

Maintaining Dynamic Equilibrium Unit 4 Homeostasis Nervous System Endocrine System.

Maintaining Dynamic Equilibrium Unit 4 Homeostasis Nervous System Endocrine System.

Regents Biology 2009-2010 Endocrine System Hormones & Homeostasis.

Regents Biology 2009-2010 Endocrine System Hormones & Homeostasis.

The Endocrine System. Endocrine Introduction The Endocrine System works with the Nervous System to maintain homeostasis. The Endocrine System consists.

The Endocrine System. Endocrine Introduction The Endocrine System works with the Nervous System to maintain homeostasis. The Endocrine System consists.

ENDOCRINE SYSTEM. Endocrine - General Major Control System of Homeostasis Negative Feedback Ductless Glands; Produce Hormones Diffuse into Blood Slow.

ENDOCRINE SYSTEM. Endocrine - General Major Control System of Homeostasis Negative Feedback Ductless Glands; Produce Hormones Diffuse into Blood Slow.

Endocrine System Biology 12. Jokes of the day: Homeostasis Endocrine System and the nervous system often work together to bring about homeostasis

Endocrine System Biology 12. Jokes of the day: Homeostasis Endocrine System and the nervous system often work together to bring about homeostasis

THE ENDOCRINE SYSTEM The endocrine system maintains homeostasis and long-term control using chemical signals.endocrine system homeostasis These signals.

THE ENDOCRINE SYSTEM The endocrine system maintains homeostasis and long-term control using chemical signals.endocrine system homeostasis These signals.

The Endocrine System - Oswalt Hangout...Endocrine System •The endocrine system works with the nervous system to maintain homeostasis. –Instead of neurotransmitters it sends hormones

The Endocrine System - Oswalt Hangout...Endocrine System •The endocrine system works with the nervous system to maintain homeostasis. –Instead of neurotransmitters it sends hormones

Endocrine System Chapter 16. Overview Overall goal of endocrine system: maintain a stable internal environment (homeostasis) Endocrine glands are “ductless.

Endocrine System Chapter 16. Overview Overall goal of endocrine system: maintain a stable internal environment (homeostasis) Endocrine glands are “ductless.

Homeostasis and nervous system. Behavior and homeostasis stimulation of the hypothalamus and limbic system induces complex motor-vegetative- endocrine.

Homeostasis and nervous system. Behavior and homeostasis stimulation of the hypothalamus and limbic system induces complex motor-vegetative- endocrine.

Endocrine System Hormones & Homeostasis

Endocrine System Hormones & Homeostasis

The Nervous & Endocrine System How our body’s communication system maintains homeostasis Chapter 29.

The Nervous & Endocrine System How our body’s communication system maintains homeostasis Chapter 29.

THE ENDOCRINE SYSTEM. I. Overview of the Endocrine System A.Regulates by working with the nervous system to maintain homeostasis. B.Secretes substances.

THE ENDOCRINE SYSTEM. I. Overview of the Endocrine System A.Regulates by working with the nervous system to maintain homeostasis. B.Secretes substances.

Chapter 16 – The Endocrine System. Endocrine system Along with the nervous system, is responsible for homeostasis – Nervous system – fast-acting; short-term.

Chapter 16 – The Endocrine System. Endocrine system Along with the nervous system, is responsible for homeostasis – Nervous system – fast-acting; short-term.