NaimExplain

Melanin and carotene are two pigments that contribute to skin color. What is the third and where is it found? The third pigment contributing to skin color is hemoglobin, the pigment contained in red blood cells found in blood vessels of the dermis.

You have just gotten a paper cut. It is very painful, but it doesn't bleed. Has the cut penetrated into the dermis or just the epidermis? Because there is no bleeding, the cut has penetrated into the avascular epidermis only.

Which tissue of the hypodermis makes it a good shock absorber? Fatty tissue in the hypodermis gives it insulating and shock-absorbing properties.

Which layer of the dermis responsible for producing fingerprint patterns? The papillary layer of the dermis gives rise to fingerprint patterns.

Why are the desmosomes connecting the keratinocytes so important? The skin is subjected to a lot of abrasion and physical trauma. The desmosomes, which are connecting junctions, help to hold the cells together during such stress.

The stratum basale is also called the stratum germinativum, a name that refers to its major function. What is that function? The stratum basale undergoes almost continuous mitosis to replace cells lost by abrasion.

While walking barefoot in a barn, Jeremy stepped on a rusty nail that penetrated the epidermis on the sole of his foot. Name the layers the nail pierced from the superficial skin surface to the junction with the dermis. Answer: Since the sole of the foot has thick skin, the layers from most superficial to deepest would be the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale.