Epithelium

Question 1

Where do you find epithelial tissues?

Answer 1

form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands.

Question 2

Where can epithelial tissues be found?

Answer 2

Outer layer of skin (epidermis)
Digestive system
Respiratory
Cardiovascular

Question 3

What is the function of epithelial tissues?

Answer 3

Barrier function (protection e.g. skin, oral cavity), secretion, absorption, excretion, filtration, diffusion, sensory reception.

Question 4

what are common features to all epithelial tissues?

Answer 4

• Arranged as continuous sheets
• tightly bound cells

Question 5

What type of epithelium tissue can be keratinised?

Answer 5

Stratified squamous epithelium
Ker

Question 6

What does keratinised mean?

Answer 6

having changed into, or changed so as to contain, keratin

Question 7

Where in the mouth can you find keratinised stratified squamous epithelium

Answer 7

gingiva, parts of tongue and hard palate.

Question 8

What happens when you have ulceration in the mouth?

Answer 8

break in the continuity of epithelium

Question 9

What has happen to have oral squamous cell carcinoma?

Answer 9

Dysplasia epithelial cells proliferate uncontrollably.

Question 10

What modified cell does columnar epithelial have?

Answer 10

Goblet cells

Question 11

What is the function of Goblet cells?

Answer 11

Synthesis and secret mucous

Question 12

Where are goblet cells found?

Answer 12

Respiratory, gastro-intestinal and reproductive tract.

Question 13

what is the role of microvilli?

Answer 13

increase surface area allow for more absorption/secretion

Question 14

what is the role of cilia?

Answer 14

move together to sweep dust and mucous

Question 15

Describe the characteristics of Bronchitis?

Answer 15

Inflammation of brachial tubes. Increased number of mucous glands in the bronchial walls.

Question 16

what type of epithelium is found in the small intestine?

Answer 16

simple columnar

Question 17

what type of epithelium is found in lung capillaries?

Answer 17

simple squamous

Answer 18

stratified squamous epithelial

Question 18

what type of epithelium is found in the oral mucosa?

Answer 18

stratified squamous epithelium (some areas are keratinised for protection)

Question 19

The epithelial membrane that lines the body cavities that are exposed to the outside of the body is called a __________ membrane.

Answer 19

mucous

Question 20

What type of gland is being described? Part of the actual cell breaks away in order to release its products.

Answer 20

Apocrine

Question 21

The epithelial membrane that surrounds the heart and lungs separately is called a __________ membrane.

Answer 21

Serous

Question 22

The epithelium that lines the central canal in the spinal cord helps move cerebrospinal fluid.

To which of the following types does this epithelium most likely belong?

A - Simple squamous
B - stratified squamous
C - Simple columnar
D - Glandular epithelium

Answer 22

Simple Columnar

Question 23

Which epithelium participates in functions like the diffusion of nutrients from the blood to the body tissues and the diffusion of gases in the alveoli of the lungs?

Answer 23

Squamous epithelium: The simple squamous epithelium consists of a single layer of flat cells. It is easy for substances, like nutrients and gases, to diffuse through these flat cells.

Question 24

One of the types of epithelium has the following properties.
It is derived from the mesoderm
It is found in the linings of the tubules in the kidneys and the gonads.
Which of the following types of epithelium is this?

Answer 24

Cuboidal epithelium

Question 25

Which of the following types of epithelium is found in the digestive tract?

Answer 25

Columnar epithelium