Module 4: Tissues

Question 1

What does epithelial cells consist of and what does it cover?

Answer 1

Is a continuous sheet of tightly packed cells and it covers the body surface, lines body cavities and many of the organs and forms certain glands.

Question 2

What is connective tissue?

Answer 2

The most widespread and the most varied; serves to connect the body together and to support, bind and protect organs.

Question 3

What is nervous tissue?

Answer 3

Tissue with a high degree of excitability and conductivity that makes up the nervous system

Question 4

What is muscle tissue?

Answer 4

Consists of contractile cells or fibers that effect movement of an organ or body part

Question 5

What are stem cells?

Answer 5

Specialized cells that can differentiate into many different types of cells

Question 6

What is fibrosis?

Answer 6

The repair and replacement of damaged tissue with connective tissue, mainly collagen.

Question 7

What are Squamous Epithelium?

Answer 7

Epithelial tissue consisting of thin, flat cells

Question 8

What are Cuboidal epithelium?

Answer 8

Epithelial tissue consisting of cells having a cube-like shape

Question 9

What are Columnar Epithelium?

Answer 9

Epithelial tissue composed of cells having a tall columnar shape

Question 10

What are simple epithelia?

Answer 10

Every cell touches the basement membrane

Question 11

What are stratified cells?

Answer 11

Some cells stack of top of other cells and the upper layers of cells don’t touch the basement membrane.

Question 12

What are exocrine glands?

Answer 12

Secrete their products into ducts -example: tears, sweat, or gastric juices

Question 13

What are endocrine glands?

Answer 13

Secrete their products called hormones into the bloodstream

Question 14

Explain oCollagenous fiber?

Answer 14

Strong and flexible; resist stretching; are the most abundant fibers

Question 15

Explain Reticular Fiber

Answer 15

Occcur in networs and support small structures such as capillaries and never fibers

Question 16

Explain Elastic Fibers

Answer 16

Made of a protein called elastin these fibers can stretch and recoil lie a rubber band

Question 17

What does regeneration mean?

Answer 17

Damaged tissue cells are replaced with the same type of cells, resulting in functional new tissue.

Question 18

What are neurons?

Answer 18

The units that conduct nervous impulses

Question 19

What are Neuroglia?

Answer 19

Protect and assist hormones

Question 20

What is Areolar Tissue?

Answer 20

Consists of collagen and elastin fibers in a soft gel-like matrix; connects many adjacent structures of the body; lies underneath almost all epithelia; surrounds blood vessels, nerves and trachea

Question 21

Explain Adipose Tissue

Answer 21

Dominated by fat cells; forms supporting, protective pads around the kidneys; acts as storage depot for excess food; helps insulate the body to conserve body heat

Question 22

Explain Reticular Tissue

Answer 22

Consists of loose network of retiulcar fibers and cells; forms the framework of the spleen, lympth nodes, and bone marrow.

Question 23

Explain the steps in tissue repair

Answer 23

1. When a cut occurs in the skin the severed blood vessels bleed into the wound. 2. A blood clot forms and then dries to form a scab. Beneath the scab white blood cells begin to ingest bacteria and cellular debris. 3. Healthy tissue around wound sends blood, nutrients, proteins and other materials necessary for growing new tissue to the damaged area. The newly formed tissue is called Granulation Tissue. Fibroblasts in the granulation tissue secrete collagen, which forms scar tissue inside the wound. 4. The surface area around the wound generates new epithelial cells. These cells migrate beneath the scab, the scab loosens and falls off to reveal new functional tissue.

Question 24

What are membranes?

Answer 24

Thin sheets of tissue

Question 25

What is mucous membrane?

Answer 25

Lines the body surfaces that directly open to the bodys exterior such as respiratory, digestive, urinary, and reproductive.

Question 26

What is Cutaneous Membrane?

Answer 26

AKA the skin, this is the bodys largest membrane.

Question 27

What is Serous Membrane?

Answer 27

Composed to simple squamous. Lines the body cavities in one continuous sheet. There are 3 sections: Pleura, pericardium, and peritoneum.