HORMONES

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  • Created by: sara.5
  • Created on: 13-04-18 13:35
What chemical messengers does the Hormonal system?
Hormones
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What endocrine Glands?
An organ that makes and releases hormones into the blood
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What are examples of endocrine glands?
Pituitary Glands, Thyroid Glands, Pancreas, Ovaries,Testes, Adrenal Glands
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What hormones does the Pituitary Glands?
ACTH,FSH,LH, Growth Hormones
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What Hormones does Thyroid Glands release?
Thyroxine
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What hormones does pancreas release?
Cells produce insulin/other produce glycogen
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What hormones does Ovaries release?
Sex Hormones oestrogen/Progestrone
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What hormones does the Testes release?
Sex hormones Testosterone
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What hormones does the adrenal Glands release?
Adrenalin
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What is a target Organ?
An organ that is affected by a specific hormone
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What is the Metabolic Rate?
The rate in which energy stored in your food is transferred by all reactions by all reactions that take place in your body to keep you alive
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What is the resting Metabolic Rate?
The metabolic rate when the body is at rest
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What affects the metabolic rate?
Thyroxine
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What does thyroxine do?
Increases the rate in which protein and carbs are broken down
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How does thyroxine affect the heart cells?
It causes heart cells to contract more rapidly and strongly
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What is the control of thyroxin in the blood an example of?
Negative Feedback
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What is negative feedback?
A control mechanism that reacts to a change in a condition, by trying to bring things back to normal
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Where is Adrenalin released from?
The adrenal Glands in the kidney.
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How much Adrenalin is there in normal condition?
A little in the blood
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When is Adrenalin released?
For a fight or flight response?
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How is the Adrenalin released?
An increase of impulse from the neurons reaches the Adrenal Gland from the Spinal Chord this triggers large amounts of Adrenalin into the blood.
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How does Adrenalin affect the heart?
It affect how the heart muscle contracts: -More rapidly, increases heart rate -More strongly increases blood pressure
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How does Adrenalin affect the Liver?
Changes Glycogen to glucose and releases in to blood.This increases sugar concentration.An also good for respiration
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How does Adrenalin affect the Blood Vessels?
-Diameter of blood cells leading to muscle widens,increase blood flow to muscle -Diameter of blood Vessels leading to other organs narrows, reduced blood flow to these organs and increases blood presuure
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Other cards in this set

Card 2

Front

What endocrine Glands?

Back

An organ that makes and releases hormones into the blood

Card 3

Front

What are examples of endocrine glands?

Back

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Card 4

Front

What hormones does the Pituitary Glands?

Back

Preview of the front of card 4

Card 5

Front

What Hormones does Thyroid Glands release?

Back

Preview of the front of card 5
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