GENERAL HISTOLOGY

INTEGUMENTERY SYSTEM

INTEGUMENTERY SYSTEM MISCELLENOUS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The outermost layer of the dermis that has friction ridges giving us fingerprints is called the:
A
reticular layer
B
papillary layer
C
hypodermis
D
None of the above
Explanation: 

Detailed explanation-1: -Papillary dermis. The papillary dermis is the uppermost layer of the dermis. It intertwines with the rete ridges of the epidermis and is composed of fine and loosely arranged collagen fibers. The papillary region is composed of loose areolar connective tissue.

Detailed explanation-2: -The thin top layer of the dermis (the inner layer of the skin). The papillary dermis has connective tissue and blood vessels that give nutrients to the epidermis (the outer layer of the skin) and that help control the temperature of the skin.

Detailed explanation-3: -Friction ridges or papillary ridges-Elevated strips of skin that begin as raised apertures around the pores and then are joined together into rows forming the ridges. Friction ridges begin to form on the human fetus during the third and fourth months of fetal life.

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