A cough is basically a reflex action so the airways can be cleared of phlegm, mucus and other irritants like dust and smoke. An inflammation of the upper respiratory tract due to a virus could also cause a cough.

Coughing can be symptomatic of many conditions including bronchitis, asthma, the common cold, flu, whooping cough or smoking. There are even some prescribed medicines that can cause coughing such as ACE-inhibitors which are used to treat heart failure.

Sometimes a cough can be a symptom of an underlying serious medical condition such as heart failure, lung cancer, tuberculosis, pneumonia or a pulmonary embolism (which is a clot on the lung). Coughs that have been caused by things like flu or the common cold normally disappear after a few days, but coughs that have been caused by an infection of the lung, such as bronchitis, could persist for several weeks, even after the infection has cleared up and this is due to the inflammation of the airways which usually take a while to clear up.

Cough Mechanism and Receptors

If someone has been suffering from a cough for more than a couple of weeks after having a viral infection, they should go to their doctor for medical advice.

Kidney stones are described as stone-like lumps which can form in either one, or both kidneys. They are quite common, but to understand what they are, we have to discuss the function of the kidneys.

First of all, the kidneys are approximately four inches long and are shaped like a bean. There are two of them in the body and they are located near the back of the abdomen area, one on each side of the spine. The job of a kidney is to remove waste products from our blood and then pass this waste into the bladder along with excess fluids to be disposed of in the urine.

Kidney stones can be categorized into four main types. Calcium stones which are made up of calcium and phosphate or oxalate; struvite stones which are made of ammonia and magnesium (these ones can often be quite large); uric acid stones (the smallest and softest type of kidney stone); and cystine stones which are normally yellowish in color and look like crystals as opposed to stones. All kidney stones can come in different shapes, colors and sizes – from the size of a grain of sand to (in some extreme cases) the size of a golf ball.

Kidney Stones

Kidney stones are formed when the waste products collected by the kidney do not dissolve properly in the fluid that will make up the urine, which then forms little crystal-like substances that can accumulate in the kidney. Over time these can form a hard lump that looks like a stone – the kidney stone.

When kidney stones are formed, they will very often try to leave the body via the urinary system, which can create problems, especially if they become blocked.

A condom is classed as a barrier contraceptive and its job is to block any sperm from fertilizing a female egg. Condoms can be made from latex, lambskin or polyurethane and are known to be approximately 98% effective at preventing pregnancy if used in the correct manner. It has to be pointed out that lambskin condoms have been around for a very, very long time but are still available; they are more expensive than conventionally made condoms and are not as good at preventing STD’s.

For efficient use of condoms, the penis must not touch the vagina before the condom has been applied. The reason for this is because a man does not necessarily need to ejaculate for any sperm to come from his penis; it can happen before as well. The best way to use a condom is to hold the bulb part between the figure and the thumb, ensuring it is the right way round. Make sure there isn’t any air trapped inside and then, while still holding the bulb, place the condom over the erect penis. Then it should be gently rolled down the shaft of the penis (if it doesn’t roll then it has been placed upside down). The condom should be disposed off immediately after ejaculation but before the penis becomes flaccid.

How to Use a Condom

The benefits of condom use include the fact that they are a reliable method to prevent pregnancy, there are very rarely any side effects from wearing one, a lowered chance of an STD transmission, they are easily available and they come in all shapes and sizes (and flavors nowadays).

Disadvantages of condom use include the fact that it can break during sex, they can tear while being taken out of the package and are not compatible with some lubricants.