Histology Exam Review Powerpoint

Question 1

Embryonic 3 germ layers and what they form

Answer 1

Ectoderm - forms epidermis and nervous sytem
Mesoderm - Muscle, bone, blood and other connective tissue
Endoderm - mucus lining of GI and respiratory tracts

Question 2

Examples of simple cuboidal epithelium

Answer 2

Found in Liver, thyroid, mammary, salivary and other glands, bronchioles, and most kidney tubules

Question 3

Examples of simple columnar epithelium

Answer 3

Inner lining of GI tract, uterus, kidney & uterine

Question 4

Pseudostratified epithelium location

Answer 4

Found in respiratory system, not all cells reach surface

Question 5

Transitional epithelium location

Answer 5

Ureters, bladder

Question 6

6 cells of connective tissue

Answer 6

1) Fibroblasts - produce fibers and ground substance
2) Macrophages - WBC phagocytose foreign material
3) Neutrophil - suicide bomber
4) Plasma cells - release antibodies
5) Mast cells - secrete histamine and heparin inhibit clotting and dilate blood vessel
6) Adipocytes - store triglycerides

Question 7

3 subtypes of loose connective tissue and their functions

Answer 7

1) Areolar - passageway for nerves and vessels, very scattered
2) Reticular - Loose networks of fibers and cells often found in immune organs
3) Adipose - Big empty looking cell with nucleus pressed against cell membrane

Question 8

Holocrine glands

Answer 8

Secretory cells that disintegrate in order to deliver accumulated product and some cell fragments, such as oil producing cells of scalp

Question 9

Simple squamous epithelium location

Answer 9

Alveoli, glomeruli, endothelium and serosa