The strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars. The uterus sits in the lower pelvic region.

Bones also protect the softer parts of our bodies. The skull is like a natural helmet which protects the brain. The spine protects the nerves in the spinal column. The ribs make a shield around our lungs, heart and liver.

The Immune System and Foreign Invaders. ... Your body has an amazing internal defense mechanism called the immune system which protects you from bacteria and viruses that can lead to illness. A healthy immune system produces a variety of different cells to attack the invading bacteria and viruses.

Concert harp. The concert harp is a technologically advanced instrument, particularly distinguished by its use of "pedals", foot-controlled devices which can alter the pitch of given strings, making it fully chromatic and thus able to play a wide body of classical repertoire.

Being cheated on in a dream can often feel so real that you actually go and accuse your spouse, boyfriend, girlfriend or significant other of it. Such dreams are unsettling and disturbing. ... Often dreams about infidelity are rarely about cheating, but rather more about your own feelings of insecurity.

The whole brain is active during dreams, from the brain stem to the cortex. Most dreams occur during REM (rapid eye movement) sleep. This is part of the sleep-wake cycle and is controlled by the reticular activating system whose circuits run from the brain stem through the thalamus to the cortex.

Brain Chemicals That Cause Sleep Paralysis Discovered. During the most dream-filled phase of sleep, our muscles become paralyzed, preventing the body from acting out what's going on in the brain. ... During REM, the brain is very active, and dreams are at their most intense.