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1

What types of tissue are normally found in skin?

All 4 types of tissue:

2

Why would burn damage to the skin represent such a serious challenge to a person's health?

Skin burns affect homeostasis of fluid levels and pH levels in the body

3

Why would it be more difficult to produce new dermis in the laboratory than new epidermis?

The dermis contains blood vessels, nerves, and glands, whereas the epidermis does not.

4

What is tissue?

Tissue is composed of specialized cells of the same type that perform a common function in the body. There are 4 types of tissue in the body.

5

What are the 4 types of tissue?

• Connective tissue
• Muscular tissue
• Nervous tissue
• Epithelial tissue

6

Connective tissue

Type of tissue that binds structures together, provides support and protection, fills spaces, stores fat, and forms blood cells; adipose tissue, cartilage, bone, and blood are types of connective tissue.

7

Muscular tissue

Moves the body and its parts

8

Nervous tissue

Receives stimuli and conducts nerve impulses

9

Epithelial tissue

Covers body surfaces and lines body cavities

10

How are cancers classified?

According to the type of tissue from which they arise.

11

How does cell division affect the chances of developing cancer?

The rate of cell division affects the chances of developing cancer. The higher the rate of cell division, the greater the chances. Because epithelial and blood cells reproduce at a high rate, carcinomas and leukemias are common.

12

What three components do connective tissues have in common?

• Specialized cells
• Ground substance
• Protein fibers

13

Ground Substance

A noncellular material that separates the cells. It varies in consistency from solid (bone) to semifluid (cartilage) to fluid (blood)

14

What are the three possible typed of fibers?

• Collagen fibers
• Reticular fibers
• Elastic fibers

15

Collagen fiber

A white fiber in the matrix of connective tissue; gives flexibility and strength

16

Reticular fibers

Very thin collagen fibers in the matrix of connective tissue, highly branched and forming delicate supporting networks

17

Elastic Fibers

Yellow fiber in the matrix of connective tissue, providing flexibility

18

In which two forms do fibrous tissues exist?

-Loose fibrous tissue
-Dense fibrous tissue

19

What is a fibroblast?

A cell in connective tissue that produces fibers and other substances

20

What is a Matrix?

Unstructured semifluid substance that fills the space between cells in connective tissues or inside organelles

21

Loose fibrous connective tissue

Areolar tissue; Tissue composed mainly of fibroblasts widely separated by a matrix containing collagen and elastic fibers

22

Adipose tissue

Connective tissue in which fat is stored

23

Adipocytes

The cells of Adipose tissue. Adipocytes are crowded and are filled with liquid fat.

24

Dense fibrous connective tissue

Type of connective tissue containing many collagen fibers packed together; found in tendons and ligaments

25

Tendon

A strap of fibrous connective tissue that connects skeletal muscle to the bone.

26

Ligament

A tough cord or band of dense fibrous connective tissue that joins bone to bone at a joint

27

What are the two main supportive connective tissues?

-Cartilage
-Bone

28

Cartilage

Connective tissue in which the cells lie within lacunae separated by a flexible proteinaceous matrix

29

What purpose to cartilage and bone serve to the body?

They provide structure, shape, protection, and leverage for movement. Cartilage is more flexible than bone because it lacks mineralization of the matrix.

30

Lacunae

(sing., lacuna); A small pit or hollow cavity, as in bone or cartilage, where a cell or cells are located.