How long should a six week old baby be sleeping?

Answer Month-old babies sleep 12 to 16 hours a day. At this age, babies usually only stay asleep for two to four hours at a time. By the time they are six weeks old, babies start to sleep for shorter peri... Read More »

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How long is the human brain?

The average human brain is 6.57 inches, or 167 mm, in length and it consists of about 100 billion neurons, according to the University of Washington Faculty website. By average, it is also 5.51 inc... Read More »

How long is the human esophagus?

The human esophagus is 23 to 25 centimeters long, or about 10 inches. This muscular canal delivers food from the back of your throat to your stomach in about two to three seconds.Source:Human Anato... Read More »

How long is the human esophogus?

The human esophagus is made up of three different parts: the cervical, the thoracic and the abdominal. The actual length of the esophagus varies slightly, but generally measures 25 centimeters, whi... Read More »