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
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