Epithelium

Question 1

SLIDE 31 Kidney How can you tell that this is simple squamous epithelium lining this blood vessel?

A) by the numerous cells with small dark nuclei in the tissue surrounding the lumen.

B) by the occasional elongated nuclei lining the lumen

C) by the blood cells inside the lumen

D) by the many eosinophil staining cells surrounding the lumen.

Answer 1

-

B) by the occasional elongated nuclei lining the lumen

Question 2

SLIDE 34 Lung Simple squamous epithelium can also be found lining the alveoli in the lungs. What is the function of this epithelium here.

A) passage of blood cells

B) secretion of fluids

C) diffusion of gases

D) to maintain the structure of the airways

Answer 2

C) diffusion of gases

Question 3

SLIDE 31 Kidney This example of simple cuboidal epithelium is located within the medulla of the kidney. Visible are many tubules and small blood vessels. Simple cuboidal epithelium lines the tubules and are easiest to see in the cross section cuts (those with a circular appearance). The simple cuboidal cells appear squarish, with equal width and height and have a round circular nucleus in the centre of the cell. What is the typical location of simple cuboidal epithelium?

A) blood vessels

B) small ducts

C) bowman’s capsule

D) sweat gland ducts

Answer 3

-

B) small ducts

Question 4

SLIDE 45 Prostate This a very poorly preserved tissue showing glands with simple cuboidal epithelium. How can you tell that this is simple cuboidal epithelium?

A) the single layer of cells that are taller than they are wide

B) the single layer of cells with oval basally located nuclei

C) the single layer of cells with round centrally coated nuclei

D) the single layer of cells with long flattened nuclei

Answer 4

-

C) the single layer of cells with round centrally coated nuclei

Question 5

Gallbaldder Epithelial tissue is one of the 4 basic tissue types and serves as a protective barrier for the body as well as an active interface with environment. The structural and functional integrity of this epithelium is vital for normal health.Simple columnar epithelium is usually involved in active secretion and/or absorption of material across the single cell layer, or (if ciliated) in movement along the surface. Simple columnar epithelium lines the digestive tract and the female reproductive tract (as well as numerous other surfaces). Determine whether the epithelial tissue in the above photo shows:

A) Simple squamous epithelium specialised for rapid diffusion of cellular components

B) Simple cuboidal epitheliun specialised for active and/or passive transport

C) Simple columnar epithelium specialised for protection against abrasion

D) Simple columnar epithelium specialised for absorption and secretion

Answer 5

-D) Simple columnar epithelium specialised for absorption and secretion

Question 6

Trachea In histology the concept of structure meets function is crucial to understanding the components of a specific tissue and in turn being able to identify the tissue through its components. Stratified epithelium do not have cilia, for this reason if a specimen looks stratified but has cilia then you can presume it is pseudostratified. Often pseudostratified epithelium is ciliated with the purpose of moving secretions etc. Following the concept of structure meats function, the trachea as well as the upper respiratory tract are an example of where you can find ciliated pseudostratified columnar epithelium. What is the purpose of such epithelium in this location, i.e. how does this epithelium meet the function of these respiratory ducts?

A) To move the mucus that collects dust, pathogens and other debris

B) Protection from abrasion

C) Secretion

D) All of the above

Answer 6

D) All of the above-

Question 7

Trachea This is another image form of pseudostratified columnar epithelium. It has the ‘appearance’ of multiple layers, nuclei of differing height and cilia (although not clearly visible at this magnification. examine the columnar cells with internal pale areas. What are they?

A) Goblet cells secreting mucus

B) Goblet cells secreting sweat

C) Goblet cells secreting serous fluid

D) They are not goblet cells!

Answer 7

-

A) Goblet cells secreting mucus

Question 8

Skin thick This image shows stratified squamous epithelium - Keratinized. In which of the following areas would it most likely be found?

A) Palm of Hand

B) esophagus

C) back of hand

D) scalp

Answer 8

-

A) Palm of Hand

Question 9

Skin thick This is another section of stratified squamous epithelium from the skin. It is characterised as squamous because of

A) top layer of cuboidal cells

B) bottom layer of cuboidal cells

C) top layer of flattened elongated cells

D) bottom layer of flattened elongated cells

Answer 9

-

C) top layer of flattened elongated cells

Question 10

Salivary gland
This is an example of stratified cuboidal epithelium. There are mostly two layers of cells that are as wide as they are high, with round centrally located nuclei.
In this image, what is this epithelium most likely lining?

A) sweat duct

B) medium sized duct

C) medium sized gland

D) mucus producing gland

Answer 10

-B) medium sized duct

Question 11

Bladder Transitional epithelium is unique and specialised epithelial tissue found in urinary tract. As seen in the diagram, it is recognisable for its irregular cell layers, cell shapes, and scalloped surface when relaxed. Which of these is NOT true of transitional epithelium?

A) large scalloped surface to allow for stretching when bladder distended.

B) multilayered (5-6) to withstand toxicity

C) larger surface cells due to build up of glandular secretions.

D) also known as urothelium

Answer 11

C) larger surface cells due to build up of glandular secretions.