11. Collagen, elastin, and reticular fibers in connective tissues are special ty

Question

11. Collagen, elastin, and reticular fibers in connective tissues are special types of a) phospholipid b) carbohydrate c) adipose tissue d) protein 12. From where do the cells of the epidermis obtain oxygen and nutrients? a) From blood vessels in the epidermis b) Diffusion from blood vessels in the dermis c) Diffusion from the air d) From blood vessels in other epithelial tissue 13. The perichondrium is a layer of fibrous connective tissue surrounding a) a bone b) most cartilage c) a blood vessel d)Pericardial cavity

Explanation / Answer

11. Protein. Collagen, reticulate fibres and elasten are fibrous proteins.

12. Diffusion from blood vessels in the dermis because epidermis doesnt have its own vascular bed

13. most cartilage; perichondrium is made of dense irregular connective tissue that surrounds and protect the cartilage of the immature bone

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