EPITHELIAL TISSUE

Question 1

SIMPLE EPITHELIUM TYPES

Answer 1

SQUAMOUS 
CUBOIDAL 
COLUMNAR
CILIATED
(PSEUDOSTRATIFIED AND GLANDULAR )

Question 2

THE TERM ‘EPITHELIUM’ INTRODUCED BY

Answer 2

RUYSCH

Question 3

Glands are composed of … type of tissue

Answer 3

epithelium

Question 4

basic structure of epithelium tissue

Answer 4

a basal surface and a free surface(faces either body fluid or outside environment)
; little intercellular material between the cells. The Basal surface lies in contact with a delicate non-cellular layer called basement membrane (provides elastic support and also anchors the epithelial tissue to the underlying connective tissue for obtaining nutrients.)

Question 5

SQUAMOUS EPITHELIUM AKA

Answer 5

PAVEMENT EPITHELIUM/ TESSELLATED EPITHELIUM

Question 6

LOCATION OF SQUAMOUS EPITHELIUM

Answer 6

INNERMOST WALL OF BLOOD VESSELS 
AIR SACS (ALVEOLI) OF LUNGS
LYMPH VESSELS 
WALL OF BOWMAN'S CAPSULE
LOOPS OF HENLE of the nephrons of the kidney
coelomic cavities etc

Question 7

functions of squamous epithelium

Answer 7

Filtration in bowman’s capsule
exchange of gases
exchange of material between blood capillaries and tissue fluid

Question 8

the term ‘Tissue’ was given by?

Answer 8

Bichat

Question 9

Study of tissue?

Answer 9

Histology (term introduced by Mayer)

Question 10

The cells of Epithelium are ——– packed with ——– intercellular matrix.

Answer 10

Closely; Little.

Question 11

Simple Epithelium functions as

Answer 11

as a lining for body cavities, ducts & tubes.

Question 12

Location of Squamous Epithelium

Answer 12

Innermost wall of blood vessels, air sacs of alveoli, lymph vessels, wall of Bowman’s capsule, loops of Henle, coelomic cavities etc.

Question 13

Function of Squamous Epithelium

Answer 13

Filtration in Bowman’s capsule;
Exchange of gases;
Exchange of materials bw blood capillaroes and the tissue fluid.

Question 14

Nuclei in Cuboidal Epithelium

Answer 14

rounded & lie in the centre of cells

Question 15

Location of Cuboidal Epithelium

Answer 15

tubular parts of nephron; ducts of glands; thyroid follicles; ovaries & testes;;
PCT has brush bordered cuboidal epithelium

Question 16

Function of Cuboidal Epithelium

Answer 16

Secretion and Excretion by glands; in PCT - reabsorption of useful substances.
Produces gametes, ova and sperm in ovaries & seminiferous tubules of the testes (germinal epithelium)

Question 17

nuclei in columnar epithelium

Answer 17

somewhat elongated, lie near the bases of the cells.

Question 18

Mucus producing Columnar Epithelium?

Answer 18

Goblet Cells.

Question 19

Location of columnar epithelium

Answer 19

Lining of Stomach & Intestine.

Question 20

Function of columnar epithelium

Answer 20

Absorption & Secretion.

Question 21

Function of cilia in ciliated epithelium

Answer 21

to move particles or mucus in a specific direction over the epithelium

Question 22

Ciliated Cuboidal Epithelium occurs in

Answer 22

Smaller Bronchioles

Question 23

Ciliated Columnar Epithelium occurs in the

Answer 23

inner surface of hollow organs like fallopian tubes and most of respiratory tract.

Question 24

Function of ciliated epithelium.

Answer 24

Passage of Ovum through oviduct; Expelling the mucus and particles trapped in it towards the pharynx.

Question 25

Nuclei in Pseudostratified Epithelium

Answer 25

long cells - oval nuclei; short cells - rounded nuclei

Question 26

Location of pseudostratified epithelium

Answer 26

pseudostratified ciliated columnar epithelium - Trachea & Large Bronchi.
pseudostratified NON ciliated columnar epithelium - Urethra of human male, large ducts parotid salivary gland etc.

Question 27

Epithelium cells specialized for secretion

Answer 27

Glandular Epithelium.

Question 28

Unicellular Glands

Answer 28

Goblet Cells of the alimentary canal (mucous cells or Mucocytes)