Epithelium

Question 1

Simple Squamous Epithelium Location? -> endothelium and mesothelium

Answer 1

alveoli of the lungs, vascular endothelium, peritoneum (serous membrane that lines the abdominal cavity.)

Question 2

Function of Simple Squamous Epithelium ?

Answer 2

promote the diffusion in tissues namely the regions of gas exchange in the lungs and the exchange of the wastes and nutrients at the blood capillaries or peritoneum.

Question 3

Simple Squamous Epithelium Structure?

Answer 3

Single layer of thin, flat shaped cells. “simple”

Nuclei bulge from cell surface in profile.

Question 4

Simple Cuboidal Structure?

Answer 4

Single layer of cuboidal “cube like” cells and they have a large and spherical nuclei

Question 5

Where are simple cuboidal cells located?

Answer 5

surface of ovaries, In the kidney tubules, parts of the eye and thyroid, salivary glands, pancreatic duct, thyroid gland follicles

Question 6

What are the function fo simple cuboidal cells?

Answer 6

To help in absorption, excretion, and secretion.

Question 7

Simple columnar Structure?

Answer 7

Slender and oval shape. Oval shaped nucelli in basal region.

Question 8

Location of the columnar epithelial cells?

Answer 8

most organs of the digestive tract including the stomach, and intestines, gallbladder, paranoid gland

Question 9

Function of the columnar epithelial cells?

Answer 9

absorption, excretion and it secretes mucous and enzymes

Question 10

Pseudo-stratified columnar epithelium structure?

Answer 10

Single layer of epithelial cells of different heights
Nuclei are disposed at different levels

Question 11

Pseudo-stratified columnar epithelium function?

Answer 11

absorption and secretion of mucus, protection from foreign particles (dust, pathogens, and allergens), and transport of materials such as hormones and enzymes.

Question 12

Pseudo-stratified columnar epithelium location?

Answer 12

Ciliated tissues of the trachea, upper respiratory tract.

In males, it is also located in the epididymis, prostate gland, and vas deferens, and in females, it is located in the epidermis layer.

Question 13

Stratified squamous epithelium
structure?

Answer 13

squamous (flattened) epithelial cells arranged in layers upon a basal membrane.

Question 14

Stratified squamous epithelium location?

Answer 14

These places include being around different organs, the skin, pharynx, and esophagus, epiglottis, vagina, cornea

Question 15

Stratified squamous epithelium function?

Answer 15

has protective functions, including protection against microorganisms from invading underlying tissue and/or protection against water loss.

Question 16

Stratified Cuboidal Epithelium Structure?

Answer 16

multiple layers of cube-shaped cells.

Question 17

Stratified Cuboidal Epithelium location?

Answer 17

the excretory ducts of sweat glands and salivary glands.

Question 18

Stratified Cuboidal Epithelium function?

Answer 18

protection, excretion and secretion.

Question 19

Stratified columnar Epithelium structure?

Answer 19

column-shaped cells arranged in multiple layers.

Question 20

Stratified columnar Epithelium location?

Answer 20

conjunctiva, pharynx, anus, and male urethra. It also occurs in embryo.

Question 21

Stratified columnar Epithelium function?

Answer 21

The function of stratified columnar epithelium is mainly the protection of underlying tissues with multiple layers of epithelial cells. Also, they perform secretion.

Question 22

Transitional epithelium structure:

Answer 22

A transitional epithelium (also known as urothelium) is made up of several layers of cells that become flattened when stretched. -> allows for bladder expansion

Question 23

Transitional epithelium location:

Answer 23

The ureters, urinary bladder and urethra.

Question 24

Transitional epithelium function

Answer 24

The main function of transitional epithelium is to allow tissue to expand and contract. For example, the transitional epithelium lines the inner walls of the urinary bladder, and this tissue allows the bladder to expand when the bladder fills with urine.

Question 25

how big are microvilli?

Answer 25

Microvilli (each measuring 0.1 x 1 μm)

Question 26

What are microvilli and what are there role and what are they supported by?

Answer 26

Microvilli are apical finger-like cellular extensions

Role: To increase cellular surface area (up to 30-fold) e.g. for selective absorption of intestinal contents.
They are supported by actin microfilaments

Question 27

Lacteals (dilated lymphatic vessels) are important for what?

Answer 27

located within the lamina propria are important in the absorption of fat.

Question 28

function of smooth muscle to role of microvilli?

Answer 28

Smooth muscle produces local rhythmic movements to improve the efficiency of absorption.