A low hemoglobin count can also be due to blood loss, which can occur because of: 1  Bleeding from a wound. 2  Bleeding in your digestive tract, such as from ulcers, cancers or hemorrhoids. 3  Bleeding in your urinary tract.  Frequent blood 1  donation. Heavy menstrual bleeding.
The brain is the control centre for your body and it sits in your skull at the top of your spinal cord. The brain has three main parts. 1  The cerebellum (say se-re-bell-um). The brain stem, that controls a lot of the 'automatic' actions of your body such as breathing and heart beat, and links the brain to the spinal cord and the rest of the body.
Shortening the length of the tines allows them to vibrate faster and thus produce a higher sound. The invention of the tuning fork is generally credited to the British musician, John Shore, in 1711. Strong used his fork as a pitch standard to tune musical instruments, a task for which they are still used today. In the 19th century, advances in manufacturing made it possible to create extremely precise tuning forks, which were made in sets and used as tone generators to identify and measure other sounds.