19. Which statement about the epidermis is not correct? a. The primary structura

Question

19. Which statement about the epidermis is not correct?

                  a. The primary structural and functional cell type of the integument is the keratinocyte.

                  b. Melanocytes produce the brown pigment melanin and are concentrated in the stratum

                    basale.

                  c. The stratum granulosum contains about 3 – 5 layers of melanocytes that still retain the ability

                   to divide.

                  d. Keratinocytes in stratum basale have stem cell properties.

                  e. Stratum spinosum contains a population of immune cells called Langerhan’s cells.

16. All of the following are true of hypodermis except _______.

a. The hypodermis is primarily connective tissue.

b. The hypodermis contains a large amount of adipocytes.

c. The hypodermis is inferior to the dermis, but superior to the epidermis.

d. The hypodermis is highly vascular.

e. The hypodermis functions to hold the integument in place relative to other body structures.

17. _____ is the formation of bone from hyaline cartilage.

                  a. Endochondral ossification

                  b. Osteon ossification

                  c. Intramembranous ossification

                  d. Intraosseous formation

                  e. Osteoprogenitor ossification

11.   ______ is a cytoplasmic protein that provides structure and adds to strength to the cutaneous membrane.

                  a. collagen

                  b. elastin

                  c. reticulin

                  d. Keratin

                  e. melanin

12. Osteoblasts _____.

a. are the most numerous type of the bone cell

b. are mature cells

c. convert into osteocytes when they are surrounded by matrix

d. are primarily located in the outer layer of the periosteum

Explanation / Answer

19. Statement b is false.As, The stratum granulosum (or granular layer) is a thin layer of cells in the epidermis.the main function of keratohyalin granules is to bind intermediate keratin filaments together.

16. c. The hypodermis is inferior to the dermis, but superior to the epidermis is not true, epidermis is superior to hypodermis

17. Endochondral ossificationis the formation of bone from hyaline cartilage.

11.Osteoblasts convert into osteocytes when they are surrounded by matrix.

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