|
|
There are 60,000 miles of blood vessels in every adult human.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
![Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_29_17_94482387.jpeg)
![Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_15_46_100301985.jpeg)