HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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papillary layer
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reticular layer
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hypodermis
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hyperdermis
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Detailed explanation-1: -The reticular layer is the deep layer, forming a thick layer of dense connective tissue that constitutes the bulk of the dermis. The dermis houses blood vessels, nerve endings, hair follicles, and glands.
Detailed explanation-2: -The reticular layer of the dermis (RD) consists of dense irregular connective tissue, which differs from the papillary layer (PD), which is made up of mainly loose connective tissue (note the difference in the number of cells).
Detailed explanation-3: -Due to high portions of collagenous fibers, dense irregular connective tissue provides strength, making the skin resistant to tearing by stretching forces from different directions. Dense irregular connective tissue also makes up submucosa of the digestive tract, lymph nodes, and some types of fascia.
Detailed explanation-4: -The Reticular Layer The lower, reticular layer, is thicker and made of thick collagen fibers that are arranged in parallel to the surface of the skin. The reticular layer is denser than the papillary dermis, and it strengthens the skin, providing structure and elasticity.