Characteristics of Epithelial Tissues I

Question 1

______is the most cellular tissue in the body

Answer 1

epithelial tissue

Question 2

what is the difference between epithelial tissue and epithelioid tissue?

Answer 2

epithelioid tissue resemble epithelial tissues but lack a free surface

Question 3

define apical domains

Answer 3

surfaces of the cells that are in contact with a lumen (i.e.: kidney tubule cells and glandular duct cells) or external environment (i.e.: surface cells of the epidermis)

Question 4

define basolateral domains:

Answer 4

include the surfaces of cells that are locked together by special junctional complexes with neighboring cells as well as the surface opposite the apical domain that is in contact with the basal lamina (characterized by highly specialized junctional complexes)

Question 5

what are the main functions of the basement membrane:

Answer 5

selective filtration barrier
scaffold for embryogenesis and regeneration
stabilization of tissue shapes

Question 6

give details/location of simple squamous epithelium

Answer 6

lines lumina of ducts, vessels, and other tubular structures

forms walls of alveoli, Bowman’s capsules and inner surfaces of membranous labyrinth and tympanic membrane

Question 7

give details/location of simple cuboidal epithelium

Answer 7

may have brush border on apical surface composed of microvilli
found of surface of ovary, pigmented epithelium of retina, kidney tubules, glands and ducts, terminal bronchioles, choroid plexus, and anterior capsule of lens of eye

Question 8

give details/location of simple columnar epithelium

Answer 8

may have a striated border (intestinal cells) on apical surface composed of microvilli
ciliated may be found in the upper respiratory tract, uterine tubes, uterus, paranasal sinuses, and the central canal of the spinal cord
non-ciliated is found in the digest tract beginning with the cardia of the stomach, the gall bladder, and in parts of the excretory ducts of glands
usually associated with goblet cells

Question 9

give details/location of stratified squamous epithelium

Answer 9

heavily keratinized: found in the epidermis with connective tissue papillae and in the cornea without connective tissue papillae
lightly/non-keratinzed: found in esophagus, vagina, lining of the mouth, tongue, and part of the epiglottis

Question 10

give details/location of stratified cuboidal epithelium

Answer 10

seldom found, but may occur in small areas of the anal mucosa, large excretory ducts of some glands, and parts of the male urethra

Question 11

give details/location of stratified columnar epithelium

Answer 11

seldom found, occurs in the ducts of adult sweat glands, fornix of the conjunctiva of the eyes, parts of the male reproductive.urinary tract, the pharynx and the epiglottis

Question 12

give details/location of pseudo stratified epithelium

Answer 12

ciliated found in trachea

stereo cilia found in epididymis

Question 13

give details/location of transitional epithelium

Answer 13

associated with urinary system

referred to as urothelium

Question 14

Simple, non-ciliated columnar epithelium is most likely to be found associated with which of the following?

Answer 14

digestive tract

Question 15

Junctional complexes are associated with which of the cellular domains

Answer 15

basolateral

Question 16

Transitional Epithelium is associated with which of the following systems

Answer 16

urinary

Question 17

Although not common, stratified cuboidal epithelium may be found in which of the following areas?

Answer 17

Part of male urethra

Question 18

Lightly keratinized stratified squamous epithelium is characteristic of which of the following locations?

Answer 18

Vaginal epithelium