Chapter 4 Tissues

Question 1

Name and describe the 4 Types of tissues in the human body.

Answer 1

1) Epithelial Tissue - Covers body surfaces, lines body cavities, hollow organs and ducts(tubes) and forms glands.
2)Connective Tissues - Protect and supports the body and organs. Binds organs together, stores energy reserves as fat and provides immunity.
3)Muscular Tissues - generates physical force needed to make body tissues move.
4)Nervous Tissues - Detects changes inside and outside body, transmits nerve impulses and coordinates body activities.

Question 2

What is Cell Junction?

Answer 2

The point of contact between plasma membrane of tissue cells. - Tightly joins tissues.

Question 3

What are the two types of Epithelial Tissues?

Answer 3

1)Covering and Lining
2)Glandular epithelium - makes up secreting portions of glands such as sweat glands.

Question 4

What are the General Features of Epithelial Tissues?

Answer 4

• Tightly packed cells with minimal extracellular material between cells - arranged in sheets or layers.
• Multiple surfaces - Apical Surface is most superficial layer and basal layer is the deepest layer.
• I Avascular but has nerve supply
• Has a high capacity for renewal by cell division.

Question 5

How are Covering and lining Epithelium Classified?

Answer 5

It is classified by its 1) Arrangement of cells in layers and 2)Cell shapes.

Question 6

What is the types of Cell arrangement of covering and lining epithelium?

Answer 6

1)Simple Epithelium - one layer.
2)pseudostratified - appears to be multiple layers because nuclei are at different levels.
3)stratified - Multiple layers - two or more.

Question 7

What is the different Cell Shapes of Covering and lining epithelium?

Answer 7

1)squamous - is flat and thin
2)Cuboidal - cube like - tall as they are wide.
3)Columnar - Rectangular
4)Transitional - Variable - changes shape.