There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. They're tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.
<span>Muscles are made of fibers?
-true
</span>
To increase their range of motion. This also helps prevent soreness and cramping.
Since herpes is spread from active skin infection and not from latent infection, a newborn baby can be infected with herpes only if they are born while the virus is active. Neonatal herpes generally occurs if the baby's skin becomes infected during the birth process.
Passive smoking is when a person inhales cigarette smoke without actually smoking. Someone in the same room or car may be smoking, and others can inhale the second hand smoke.
The effects can be similar to that of smoking, if the person lives iwth a smoker or spends a lot of time around people smoking. Generally, occasional exposure isn't harmful.
