Anatomy of human body in tamil: what

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Wednesday, March 18, 2015

Endorphins definition What are endorphins

Endorphin is a chemical substance made of proteins and produced in the pituitary gland of the brain. It acts on the central and the peripheral nervous systems in suppressing pain.

Enkephalin is a type of endorphin and also a natural pain killer, working to inhibit the transmission of pain in the pathway for pain perception. This lessens the emotional and the physical impact of pain.

Research is revealing how these two natural opiates might also serve other roles.

Enkephalin might be involved in the development of psycho-pathological behavior in some people. Endorphin might also exert profound effects on moods, higher production being associated with a persons sense of well-being.

Increased levels of these chemical substances might also prevent an immune system from being weakened by such psychological states as depression or bereavement.

People prone to depression, alcoholism, or drug addiction are often deficient in endorphin levels.

How to increase endorphin levels?

Regular aerobic exercise is believed to elevate endorphin levels.This is the so-called “runner’s high”.

Meditation, prayer and relaxation response training also elevate endorphin levels.

The kidney filters body fluids within the nephron units and expels wastes via the ureter.

Kidney is one of a pair of organs located at the back of the abdomen, against the strong muscles next to the spine, and behind the intestines and other organs.
The adrenal glands lie on top of the kidneys.
Each kidney weighs about 5 ounces (140g) and is about 4 inches (10cm) long in the average adult.
Its inner structure, which is called the renal pelvis, collects urine as it is formed and passes it out of the kidney to the bladder via the ureter.
The renal pelvis also is connected to the artery and vein that carry blood to and from the kidney.

What is the function of the Kidneys?

The kidneys filter out water and also unwanted substances in the blood.
These substances are produced by the normal working of the body.
They are excreted by the kidneys in the form of urine.
The kidneys also keep the salts and water of the body in correct balance.

How do kidneys work?

The blood passes through each kidney under high pressure.
The blood is filtered by the glomeruli, special structures in the kidney containing clusters of capillaries that collect water, salts, and unwanted substances.
The filtrate passes along a fine tube, the nephron (of which there are approximately one million in each kidney), which reabsorbs any of the water, glucose, and salts that the body still re-quires and allows the rest to pass into the pelvis of the kidney as urine.

Are you tall for your age, or short?
How tall you grow depends mostly on chemical substances called hormones, which move around your body in your blood.
Some hormones cause the cells in your body to make more protein. They then make the cells grow and divide, so that all of your body gets bigger.
Because hormones are going around in your blood, they reach every cell in your body. So all your cells grow and divide at your normal rate.
Can you imagine how it would be if some-parts of your body grew faster than others?
This is why hormones are so important.

Hormones control the different parts of your body, so that everything is regulated. Hormones are regulators of chemical and growth activity in the body.

A special kind of hormone, called growth hormone, helps the long bones to grow. Children who do not produce enough of this hormone may not grow as tall as they would be able to grow with the hormone.
The balance of hormones in your blood is controlled by the pituitary gland, which lies just below the brain.
The pituitary gland produces hormones which control many of the body’s activities.
Large numbers of nerve cells and blood vessels link the pituitary gland to a part of the brain called the hypothalamus. The hypothalamus controls the pituitary gland by sending “on” and “off ” messages through the nerve cells and the bloodstream.
These messages affect the pituitary gland with regard to the releasing of its hormones.

What is the Volume of Your Lungs

What youll need:

Clean plastic tubing
A large plastic bottle
Water
Kitchen sink or large water basin

Instructions:

Make sure the plastic tubing is clean
Put about 10cm of water into your kitchen sink.
Fill the plastic bottle right to the top with water.
Put your hand over the top of the bottle to stop water escaping when you turn it upside down.
Turn the bottle upside down. Place the top of the bottle under the water in the sink before removing your hand.
Push one end of the plastic tube into the bottle.
Take a big breath in.
Breathe out as much air as you can through the tube.
Measure the volume of air your lungs had in them.
Make sure you clean up the area to finish.

Whats happening?

As you breathe out through the tube, the air from your lungs takes the place of the water in the bottle. If you made sure you took a big breath in and breathed out fully then the resulting volume of water you pushed out is equivalent to how much air your lungs can hold. Having a big air capacity in your lungs means you can distribute oxygen around your body at a faster rate. The air capacity of lungs (or VO2 max) increases naturally as children grow up but can also be increased with regular exercise.

Anatomy of human body in tamil