Classification of Tissue

Question 1

simple squamous epithelium

Answer 1

Function: Allows passage of materials by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosae.

Location: Kidney glomeruli, air sacs of lungs, lining of heart, blood vessels, and lymphatic vessels; lining of ventral body cavity(serosae)

Question 2

simple cuboidal epithelium

Answer 2

Function: secretion and absorption

Location: Kidney tubules; ducts and secretory portions of small glands, ovary surface.

Question 3

simple columnar epithelium

Types of tissues and characteristics

Answer 3

Function: Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus (or reproductive cells) by ciliated action.

Location: nonciliated type lines most of the digestive tract (stomach to anal canal), gallbladder and excretory ducts of some glands; ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus.

Question 4

pseudostratified columnar epithelium

Answer 4

Function: Secretes substances, particularly mucus; propulsion of mucus by ciliary action.

Location: Nonciliated type in male’s sperm-carrying ducts and ducts of large glands; ciliated variety lines the trachea, most of the upper respiratory tract.

Question 5

stratified squamous epithelium

Answer 5

Function: protects underlying tissues in areas subject to abrasion

Location: nonkeratinized type forms the moist lining of the esophagus, mouth, and vagina; keratinized type forms the epidermis of the skin, a dry membrane.

Question 6

transitional epithelium

Answer 6

function: stretches readily and permits distension of urinary organ by contained urine

Location: lines the ureters, urinary bladder, and part of the urethra