NATS 1610 Lecture Notes - Lecture 3: Loose Connective Tissue, Elastin, Collagen

• School: York University
• Department: Natural Science
• Course: NATS 1610
• Professor: Barbara Czaban

Document Summary

In the last class we addressed the epidermis, in this lecture we will discuss the dermis, which is the middle layer made of connective tissue. Connective tissue: colagen and elastin bre are the main types of protein bres found in the dermis. Exibility and elasticity: loose brous and dense irregular connective tissues are the two kinds found within the connective tissue in the dermis, the area that separates the dermis from the epidermis is called the dermal papilla. They make indentations in the epidermis and interlock with it to hold it in place. Dermis: contains fibroblasts, which make collagen and the other types of bres found within connective tissue. They also make the matrix, which is the gel like substances where the. Bres are suspended: contains macrophages, which are part of the immune system. We need them to protect the skin to keep us healthy: contains adipocytes, which are primarily fat storage cells.