Mechanisms Of homestatis Flashcards
Define homestatis.
A self-regulation works on processing the adjustment of the environment conditions.
What organ controls the temperature?
The skin.
What organ controls composition?
The liver, lungs, kidney
And does up to 420 functions ( ͡° ͜ʖ ͡°)
What does homestatis breakdown?
Glucose & fat.
Define osmosis.
The spontaneous net movement or diffusion of solvent molecules.
SALT: shiver
NORMAL: RSC
DILUTED: bursts
List the function of homestatis.
- Maintain temperature.
- Maintain body composition.
What does composition controls?
- Pressure.
- Glucose level.
- Salt level ( people near fire sweat alot and lost salts).
TRUE OR FLASE: the levels of glucose and salt doesn’t necessarily have to be constant.
False, it has to be constant.
When does the hair stands?
When it’s cold.
And the muscle falls.
When does the hair falls down?
When it’s hot.
And the muscle stands.
What’s the hair muscle called?
The eracta muscle, with a never attached to it.
What happens when air gets trapped between the hairs?
Makes the hair warmer.
TRUE OR FALSE: white absorbs all colors.
True.
What’s an example of a short-term distribution in homestatis?
A fever.
What’s an example of a long-term distribution in homestatis?
Diabetes.
Mention the function of the skin in the vitamin D cycle.
Absorbing the UV light from the sun.
Mention the function of the liver in the vitamin D cycle.
Activate the component.
Mention the function of the kidney in the vitamin D cycle.
Take the component from the liver and turn it to vitamin D.
Define vasodilation.
The wideing of the blood vessel as a result of the relation of the blood vessel’s muscular walls and the blood flow is faster.
Define vasoconstriction
The narrowing of blood vessels by small muscles in the walls l and its blood flow is slower.
TRUE OR FALSE: the blood vessels change positions.
False, It doesn’t.
The point of the narrowing and widening of the blood vessels is to..
Regulate the body’s temperature.
What happens to the skin during overheat?
The hypothalamus reroute blood to the skin’s periphery which causes the body to sweat to cool down.
What happens to the skin during overcool?
Peripheral vasoconstriction can limit heat loss while constricted vessels retain warmth.
TRUE OR FALSE: the endocrine is fast.
False, it is slow.
What type of signals does the endocrine system use?
Chemical signals.
TRUE OR FALSE: the nervous system controls all glands
False, the endocrine controls all glands directly.
TRUE OR FALSE: the endocrine is physically disconnected.
True.
Where does the endocrine move?
The endocrine moves through the bloodstream.
Why does hormones takes a long time?
Because it goes through the bloodstream.
What’s the function of pituitary gland?
Controlling the growth.
TRUE OR FALSE: balance is needed for hormones.
True.
Define the Thyroid Stimulating Hormone (TSH).
THS is a hormone that your pituitary gland releases to trigger your thyroid to produce and release its own hormones.
After the pituitary gland produces TSH where does it go?
To the Thyroid gland.
What’s a thyroid gland?
A gland that produces hormones that regulate the body’s metabolic rate, growth and development.
What’s a Thyroxine hormone?
also known as T4, is a type of thyroid hormone.
What happens after the THS go the the Thyroid gland?
It goes to the T4 hormone.
How much of T4 hormone is needed?
90-110 mg/cc
What was the pituitary gland cycle called?
A negative feedback.
Define the negative feedback.
Negative feedback is the result of a reaction is reduced to bring the system back to a stable state.
How much it may take the endocrine system to send a message?
2 hours.
Negative feedback can help..
Maintain environment.
What’s a positive feedback?
Positive feedback is the result of a reaction increased to bring the system back to a stable state.
How’s the body’s temperature regulated?
by a part of the brain called the hypothalamus.
Define hypothalamus.
The hypothalamus protects the body’s internal organs by checking the body’s current temperature and compares it with the normal temperature of about 37°C.
