chpt 3 all partials

Animal Histology: Chapter 3 Notes

1. Brown Adipocyte (Partial 2019-2020)

  • Has a flattened nucleus

  • Rich in mitochondria

  • Widespread in adults

  • Unilocular

2. White and Brown Adipocytes

  • Share the same number of lipid droplets

  • Equally distributed in adults

  • Lack a basement membrane

  • Derive from mesenchymal cells (Partial 2018-2019)

3. Brown Adipose Tissue

  • Non-specialized connective tissue

  • Found in adult humans

  • Involved in thermogenesis (fight against cold)

  • Formed by cells with a peripheral nucleus

4. Adipose Tissue

  • Poor in cells

  • Weakly vascularized

  • Composed of equal proportions of collagen and elastin

  • Derived from embryonic mesoderm

5. White Adipocytes

  • Surrounded by a basal lamina

  • Have long cytoplasmic prolongations

  • Mobile cells

  • Rich in regular elastic fibers (REG)

Partial Information (2017-2018)

6. Concerning Adipose Tissue

  • Adipocytes are surrounded by reticular fibers

  • White adipocytes are multilocular (incorrect)

  • White adipose tissue is more vascularized than brown adipose tissue (incorrect)

  • Equally distributed between males and females

  • All the statements are correct (incorrect)

7. Brown Adipocytes

  • Unique lipid droplet

  • Abundant in adults

  • Rich in mitochondria

  • May divide

  • Statements b and c are correct

8. Locations of Brown Adipose Tissue

  • Found in:

    • Newborns

    • Soles of the feet

    • Around the eyeballs

    • All answers (D)

9. White Adipocytes

  • Have a central nucleus

  • Lack mitochondria (incorrect)

  • Have a large lipid vacuole

  • Derive from mesenchyme cells

Partial Information (2015-2016)

10. White Adipose Tissue

  • Uniformly distributed in adult males and females

  • Richly supplied with blood capillaries

  • Has intense mitotic activity

  • Contains myelinated nerve fibers (incorrect)

11. Incorrect Statements

  • (A) Brown adipocytes do derive from mesenchymal cells (correct)

  • (B) Brown adipocyte has a flattened nucleus (correct)

  • (C) Brown adipocyte has large size due to one large lipid vacuole (incorrect)

  • (D) Brown adipose tissue is involved in heat generation (correct)

Partial Information (2013-2014)

12. Immature Form of Adipocyte

  • Question about immature form of adipocyte (not answered)

13. Brown Adipocyte

  • Has a flattened nucleus

  • Derives from mesenchymal cells

  • Darker than white adipocyte

  • Widely distributed in adults

14. Functions of White Adipose Tissue

  • Storing energy

  • Protecting organs

  • Producing heat (incorrect)

  • Providing elasticity (incorrect)

Partial Information (2012-2013)

15. Derivation of Brown Adipocytes

  • True (Brown adipocyte does derive from mesenchymal cells)

  • False

16. White Adipose Cells

  • Have many lipid droplets (correct)

  • Are smaller than brown adipocytes (incorrect)

  • Are metabolically active

  • Surrounded by reticular fibers