It is a single layer of cube-shaped cells. New epidermal skin cells, called keratinocytes, are formed in this layer through cell division to replace those shed continuously from the upper layers of the epidermis. This regenerative process is called skin cell renewal. As we age, the rate of cell renewal decreases.
Primates - marmosets, monkeys, apes, lemurs, humans. There are about 233 species in this order. Primates range in size from the tiny pygmy marmoset that weighs less than 3 ounces to the large mountain gorilla that weighs close to 400 pounds.Most species of primates are found in subtropical or tropical forests and many species live in trees. Primates have five fingers on their hand and five toes on their feet.
Pygmy marmoset fingernails are like claws to help them climb up and down tree trunks. They do not have opposable thumbs. Pygmy marmosets live in the Amazon region of Brazil, Colombia, Peru, Ecuador, and northern Bolivia.he marmosets also eat some nectar and fruit. At the San Diego Zoo, pygmy marmosets eat veggies, fruit, a specialized commercial diet for New World monkeys, crickets, mealworms, wax worms, and hard-boiled eggs. Pygmy marmosets communicate with each other by chattering and trilling in high-pitched voices.