Tissues

Question 1

What are tissues?

Answer 1

Groups of cells with similar structure and function

Question 2

What are the four types of tissues?

Answer 2

Epithelial (epithelium), Connective, Muscle, Nervous

Question 3

What is cytology?

Answer 3

The study of cells

Question 4

What is Histology?

Answer 4

The study of tissues

Question 5

Where is Epithelial Tissue Located?

Answer 5

Body coverings, Body linings, Glandular Tissue

Question 6

What are the functions of Epithelial tissue?

Answer 6

protection, absorption, filtration, secretion

Question 7

What are the two types of cell layers in Epithelial tissue?

Answer 7

Simple- ONE Layer
Stratified- MORE than ONE Layer

Question 8

How many types of epithelial tissues are there?

Answer 8

Nine

Question 9

What are the three types of cell shapes?

Answer 9

1. Squamous (flattened)
2. Cuboidal (cube-shaped)
3. Columnar (shaped like columns)

Question 10

What is Simple Squamous Epithelial?

Answer 10

Single layer of flat cells

Question 11

Where is the simple squamous located? (they form membranes)

Answer 11

-lines air sac of lungs
-forms walls of capillaries
-forms serous membranes that line and cover organs in the ventral cavity

Question 12

What are the functions of simple squamous epithelial?

Answer 12

diffusion and filtration

Question 13

What is Simple Cuboidal Epithelial?

Answer 13

A single layer of cube-like cells

Question 14

Where is the simple Cuboidal epithelial located?

Answer 14

-common in glands
-forms walls of kidney tubules
-covers the surface of ovaries

Question 15

What is the simple columnar epithelial?

Answer 15

Single layer of tall cells

Question 16

Where is the simple columnar located?

Answer 16

Lining of the digestive tract from from stomach to anus

Question 17

What are the functions of the simple columnar?

Answer 17

1. Makes mucous (the goblet cells make the mucous)
2. helps food pass

Question 18

What is the Pseudostratified Columnar Epithelial?

Answer 18

• Appears to be stratified, but it’s not
• all cells rest on a basement membrane
• single-layered cells

Question 19

Where is the pseudostratified columnar located?

Answer 19

In the respiratory tracts

Question 20

What are the functions of the pseudostratified columnar?

Answer 20

• absorption
• secretion
• single-layered cells

Question 21

What is the stratified squamous epithelial?

Answer 21

• the most common stratified epithelium
• multi-layered
  -thicker

Question 22

Where is the Stratified Squamous located?

Answer 22

• skin (outer portion)
• mouth
• Esophagus

Question 23

What are the functions of the stratified squamous?

Answer 23

serves as a protective covering where friction is common

Question 24

What is the Stratified Cuboidal Epithelial?

Answer 24

two layers of cuboidal cells

Question 25

What is the Stratified Columnar Epithelial?

Answer 25

the surface cells are columnar, and the cells underneath vary in size and shape

Question 26

Where are both stratified columnar and cuboidal located?

Answer 26

(rare in the body) Found mainly in ducts of large glands

Question 27

What is the transitional Epithelial?

Answer 27

Composed of modified stratified squamous epithelial (the shape of cells depend upon the amount of stretching)

Question 28

Where is the transitional epithelial located?

Answer 28

the lining of the urinary system organs

Question 29

What are the functions of transitional epithelial?

Answer 29

stretching and ability to return to normal shape

Question 30

What is the Glandular Epithelial?

Answer 30

multi-functional cells with the main functions of secretion and absorption.

Question 31

What are the two types of glandular epithelial?

Answer 31

Endocrine and Exocrine Gland

Question 32

What is the endocrine gland?

Answer 32

- no ducts - regulates growth and metabolism and hormones -slow regulation -Example: thyroid, adrenals, pituitary

Question 33

What is the exocrine gland?

Answer 33

- secretions exit through ducts - has ducts - Example: sweat gland, oil gland, liver, pancreas

Question 34

What is Connective Tissue?

Answer 34

it is found everywhere in the body because it connects body parts. It includes most abundant and widely distributed tissue

Question 35

What are the functions of connective tissue?

Answer 35

Protects, Supports, Cushions, and Insulates

Question 36

What are the characteristics of connective tissue?

Answer 36

1. Variations in blood supply (some vascular, some avascular) 2. Extracellular Matrix (non-living material surrounds living cells)

Question 37

What are the two kinds of extracellular matrix?

Answer 37

1. Ground Substance (mostly water, proteins, and polysaccharides)