Review Exercise Questions Flashcards
Where is the ciliary epithelium located and why?
The ciliary epithelium fills the anterior and posterior chambers of the eye. It surrounds the ciliary body and the ciliary processes. This structure supports the lens and provides an enormous surface area for fluid secretion (of aqueous humour)
What type of cell junctions are seen in the epidermis of the skin and why?
Desmosomes are found in the epidermis of the skin. These junctions anchor adjacent cells in the epidermis together and give skin the ability to stretch without tearing.
What are microvilli? What is their purpose?
Microvilli (cell extensions) are microscopic fingerlike cytoplasmic projections that increase the surface area of the plasma membrane and are abundant on cells involved in absorption.
Which tissue forms the alveoli and why?
Simple squamous epithelium forms the alveoli of the lungs and permits the diffusion of gas.
What type of gland is the pancreas?
The pancreas functions a both a digestive exocrine gland and a hormone-producing endocrine gland.
Where is transitional epithelium found? Why?
Transitional epithelium lines urinary bladders and portions of ureters and urethras. It allows organs to stretch and maintain protective lining while holding variable amounts of fluid without rupturing.
Which type of membrane lines the pericardium?
Simple squamous epithelial layer (Mesothelium) The fibrous pericardium (the most superficial layer) is made up of dense and loose connective tissue.*
What are glycosaminoglycans?
Long unbranched polysaccharides that are found in ground substance. They trap water, making ground substance more jellylike. The polysaccharides include hyaluronic acid, chondroiton sulfate, dermatan sulfate, and keratin sulfate.
Which tissue is effected in Marfan syndrome?
Marfan syndrome and related disorders affect the body’s connective tissue. (more specifically elastic connective tissue)
