The size of your fist.
Average 7-8 hrs
adults average around 30 inches
the average mans humerous is a bone in his arm
The average is 8 hours a night that you should be getting!!
The pH of the mouth is very variable; sometimes 5,5-6,0. however, on an average basis, it is 7, or neutral.
The average rate of listening efficiency for most adults is 25%
Adults average 2 to 3 ft long, and weigh 10 to 45 pounds. The record was 110 pounds and 5 ft long.
The average newborn stomach size is about 5-7 milliliters.
The average stomach capacity of a newborn is about 30-60 milliliters.
Because every human is different in size and shape everyones stomach is a different length, so there is not a certain length of the stomach.
2cm
The esophagus is a muscular tube that runs from the back of the throat (pharynx) to the stomach. It is approximately 10-13 inches (25–33 cm) long in adults, extending down the chest behind the heart before reaching the diaphragm and connecting to the stomach.