Tissues

Question 1

What are tissues?

Answer 1

Groups of cells that perform a common function

Question 2

What are the main functions of epithelial cells? What are the main types?

Answer 2

Protects body from moisture loss, bacteria, and internal injury.

• Covering and lining epithelium lines almost all external and internal surfaces.
• Glandular epithelium secretes hormones or other products such as stomach acid, sweat, saliva, milk

Question 3

What are the main functions of connective tissue?

What are the two types and where are they found?

Answer 3

Generally provides support and structure to the body.
Loose connective tissue: holds the outer layer of skin to the underlying muscle tissue (found in fat layers, lymph nodes, red bone marrow)
Fibrous connective tissue: also holds body parts together but is more rigid. Found in ligaments, tendons, cartilage, and bone

Question 4

What are the main functions of nervous tissue? What are the two types of nerve cells?

Answer 4

Forms the nervous system, which coordinates movement through nerve network.
Two types of nerve cells:
1) Neurons - basic structural unit
2) Neuroglia (glial cells) provide support functions for neurons such as insulation or anchoring to blood vessels

Question 5

What are the main functions of muscle tissue? How is it different from other tissues? What are the main types?

Answer 5

Muscle tissue is unique in that it contracts.

1) Cardiac- found in the heart
2) Smooth- lines the walls of blood vessels and certain organs such as the digestive and urogenital tracts
3) Skeletal- attached to bones and causes movements of the body

Question 6

What type of tissue is blood?

Answer 6

Connective tissue

Question 7

What type of tissue is dermis?

Answer 7

Connective tissue

Question 8

What type of tissue is apidocytes?

Answer 8

Connective tissue

Question 9

What are examples of nervous tissue?

Answer 9

Neurons, glial cells (astrocytes, microglia, Schwann cells, oligodendrocytes, ependymal cells)

Question 10

Ependymal cells are considered to be?

Answer 10

Both nervous and epithelial tissue

Question 11

Epithelial tissue is anything that ____

Answer 11

Lines a cavity or separating the body from the external environment

Question 12

What is the order of tissue organization?

Answer 12

Organ systems > Organs > Tissues > Cells