Activity 1: Examining Epithelial Tissue Under the Microscope

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1

Define tissues.

Groups of cells that are similar in structure and function.

2

What are the 4 main tissue types?

Epithelial, connective, nervous, and muscle.

3

Define organ.

Tissues that are organized to perform specific functions.

4

Define histology.

The study of tissues.

5

Define epithelial tissue.

A sheet of cells that covers a body surface or lines a body cavity.

6

Name 3 general functions of epithelial tissue.

1. Covering epithelium

2. Lining epithelium.

3. Glandular epithelium.

7

What are the 6 specific epithelial tissue functions?

1. Protection

2. Absorption

3. Filtration

4. Excretion

5. Secretion

6. Sensory Reception

8

What 5 special characteristics distinguish epithelial tissue from other types?

1. Polarity

2. Specialized contacts

3. Supported by connective tissue

4. Avascular but innervated

5. Regeneration

9

The covering and lining epithelia are classified according to what 2 criteria?

1. Number of layers

2. Cell Shape

10

Define simple epithelia.

One layer of cells attached to the basement membrane.

11

Define stratified epithelia.

Two or more layers of cells.

12

What are the 5 types of epithelial tissue based on shape?

1. Squamous

2. Cuboidal

3. Columnar

4. Pseudostratified

5. Transitional

13

How are stratified epithelia named specifically?

Named according to the cells at the apical surface of the epithelial sheet.

14

Where is transitional epithelium only found and why?

Urinary system organs that are prone to stretching.

15

Do epithelial tissue make up endocrine and exocrine glands?

Yes

16

2 differences of endocrine and exocrine glands.

1. Endocrine don't have ducts and exocrine do.

2. Endocrine glands secrete hormones into the blood, whereas exocrine glands secrete their products onto a body surface or into body cavities.

17

What are 4 common exocrine glands?

1. Sweat glands

2. Oil glands

3. Liver

4. Pancreas

18

Functions of simple squamous epithelium?

1. Diffusion of materials.

2. Filtration of materials.

3. Secretes lubricating substance in serosae. .

19

Locations of simple squamous epithelium?

1. Kidney glomeruli

2. Air sacs of lungs

3. Lining of heart

4. Blood vessels

5. Lymphatic vessels

6. Lining of ventral body cavity

20

Functions of simple cuboidal epithelium?

1. Secretion

2. Absorption

21

Locations of simple cuboidal epithelium?

1. Kidney tubules

2. Ducts of small glands

3. Secretory portions of small glands

4. Ovary surface

22

Functions of simple columnar epithelium?

1. Absorption

2. Secretion of mucus and enzymes.

3. Ciliated type propels mucus or reproductive cells.

23

Locations of nonciliated simple columnar epithelium and locations of ciliated simple columnar epithelium.

1. Digestive tract

2. Gallbladder

3. Excretory ducts of some glands

_______________

1. Small bronchi

2. Uterine tubes

3. Some regions of the uterus

24

Functions of pseudostratified columnar epithelium.

1. Secretes primarily mucus.

2. Ciliated type propels mucus.

25

Locations of nonciliated pseudostratified columnar epithelium and locations of ciliated pseudostratified columnar epithelium.

1. Sperm-carrying ducts

2. Ducts of large glands

__________________

1. Trachea

2. Most of upper respiratory tract

26

Function of stratified squamous epithelium?

Protects tissues subjected to abrasion.

27

Locations of nonkeratinized stratified squamous epithelium and location of keratinized stratified squamous epithelium.

1. Lining of the esophagus

2. Lining of the mouth

3. Lining of the vagina

_______

1. Epidermis of the skin

28

Function of stratified cuboidal epithelium?

Protection

29

Locations of stratified cuboidal epithelium?

1. Largest ducts of sweat glands

2. Mammary glands

3. Salivary glands

30

Functions of stratified columnar epithelium?

1. Protection

2. Secretion

31

Locations of stratified columnar epithelium?

1. Male urethra

2. Large ducts of some glands

32

Function of transitional epithelium?

Permits stretching of urinary organ by contained urine.

33

Locations of transitional epithelium?

1. Lining of ureters

2. Lining of bladder

3. Part of the urethra

34
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple cuboidal epithelium.

2. Lumen

35
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Pseudostratified ciliated columnar epithelium

2. Cilia

36
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Pseudostratified ciliated columnar epithelium

2. Connective tissue

37
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Transitional epithelium

2. Lumen

38
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple columnar epithelium

2. Mucus secretion

39
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple cuboidal

2. Simple cuboidal epithelial cell

40
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple columnar epithelium

2. Basement membrane

41
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple columnar epithelium

42
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Pseudostratified ciliated columnar epithelium.

_____

1. Mucus of globlet cell

2. Cilia

3. Basement membrane

4. Pseudostratified epithelial layer

43
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Simple columnar epithelium

_____

1. Mucus secretion

2. Microvilli

3. Goblet cell

44
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Simple cuboidal epithelium

____

1. Simple cuboidal cell

2. Basement membrane

3. Lumen

4. Connective tissue

45
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Simple squamous epithelium

2. Nuclei of squamous epithelial cell

46
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Stratified cuboidal epithelium

_____

1. Basement membrane

2. Cuboidal epithelial cells

3. Duct lumen

47
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Stratified squamous epithelium

____

1. Nuclei

2. Connective tissue

3. Basement membrane

4. Stratified squamous epithelium

48
card image

1. Name the specific type of tissue.

2. Name the numbers.

1. Transitional epithelium

____

1. Transitional epithelial cells

2. Connective tissue

3. Basement membrane

49
card image

1. Name the specific type of tissue.

2. Name the feature of the pointer.

1. Simple squmous epithelium.

2. Air sacs.