How Does The Type Of Epithelial Tissue Relate To Its Function

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Unit 3 Lecture Study Guide
Directions: Answer each of the questions below using the knowledge gained in the Lecture folder materials.
1. List the 4 primary tissue types and give the general characteristics and functions of each one.
Connective tissue is the most abundant and the most widely distributed of the tissues and its main function is to support and protect. Epithelial tissue covers the body surface and forms the lining for most internal cavities and its function is to protect, secrete, absorb, and filter. Nervous tissue includes skeletal, smooth and cardiac. They’re used in contracting skeletal parts, found in the walls of internal organs and blood vessels and also, found in the walls of the heart. Nervous tissue is made of special cells hat receive stimuli and conduct impulses between parts of the body. 2. How are epithelial tissues classified?
Epithelial tissues are classified by the cell shape and arrangement.

3. How does the type of epithelial tissue relate to its function? Give at least 1 example of where you would find each type of epithelial tissue.

4. Differentiate between exocrine and endocrine glands. Give an example of each.
The endocrine gland has no contact with the exterior of the body and the exocrine does. While the endocrine gland is ductless the exocrine opens up to the exterior body through the ducts.

5. What is the difference between apocrine, merocrine and holocrine glands? Which is the most common?
The difference between apocrine, merocrine, and holocrine glands is that they work with different kinds of gland and all of them either become part of secretion, go into the secretion or leaves by excretion. The most common gland is the holocrine.

6. Describe connective tissue’s intercellular material.
The connective tissue’s intercellular material contains collagen, elastic, and reticular fibers.

7. What are the 8 main types of connective tissue? Briefly describe each.
The Fibroblast secretes the proteins. The Adipose are the fat cells. The Mast cells release heparin, histamine, and proteolytic enzymes in response to injury. The Leukocyte responds to injury. The Plasma cell secretes antibodies. Macrophages provide protection. The Chondroblasts form blood cells and the stem cells can differentiate.

8. Order the types of connective tissue from most rigid to softest. Be sure that you understand why?

9. Describe the 3 types of cartilage? Which is the most abundant?
The 3 types of cartilage are hyaline, fibrocartilage, and elastic.

10. Differentiate between the 3 types of muscle tissue.
Cardiac muscle is around the heart, skeletal muscle is around the bones and the smooth muscle are fibers located by the wall.

11. What are the basic steps of tissue repair?
The basic steps of tissue repair are inflammation, organization, and regeneration.

12. What is the composition of DNA?
DNA is composed of deoxyribose nucleic acid.

13. How are nucleotides paired in DNA? What is different with RNA?
The nucleotides in DNA are paired by C-G and A-T (vice versa) . But with RNA the pairing is C-G and A-U,