Tissue Level of Organisation: Important Questions

Tissue Level of Organisation

Evaluation

1. The main function of the cuboidal epithelium is

a. Protection

b. Secretion

c. Absorption

d. Both (b) and (c)

2. The ciliated epithelium lines the

a. Skin

b. Digestive tract

c. Gall bladder

d. Trachea

3. What type of fibres are found in connective tissue matrix?

a. Collagen

b. Areolar

c. Cartilage

d. Tubular

4. Prevention of substances from leaking across the tissue is provided by

a. Tight junction

b. Adhering junction

c. Gap junction

d. Elastic junction

5. Non-shiveringthermogenesis in neonates produces heat through

a. White fat

b. Brown fat

c. Yellow fat

d. Colourless fat

6. Some epithelia are pseudostratified. What does this mean?

7. Differentiate white adipose tissue from brown adipose tissue.

8. Why blood is considered as a typical connective tissue?

9. Differentiate between elastic fibres and elastic connective tissue.

10. Name any four important functions of epithelial tissue and provide at least one example of a tissue that exemplifies each function.

11. Write the classification of connective tissue and their functions

12. What is an epithelium? Enumerate the characteristic features of different epithelia.

Glossary

Acinus – Cells arranged into a circular secretory unit

Adipocyte – Large cell (up to 200 microns) with only a thin film of cytoplasm due to the presence of a large fat droplet.

Adipose tissue – A group of adipocytes.

Bone – Specialized connective tissue with a mineralized (hydroxyapatite) matrix.

Collagen – A triple helix protein which allows for great tensile strength.

Goblet cell – special mucus secreting columnar epithelial cell located in the respiratory tract and intestine.

Lacunae – A cavity or depression especially in the bone

Mast cells – Cells filled with basophilic granules found in numbers in connective tissue and releases histamine and other substances during inflammatory and allergic reactions.

Macrophages – Immune cells derived from monocytes; engaged in phagocytosis of microbes and debris.