Lecture 1

1. Types of cuts

1.1. Longitudinal: going up and down

1.2. Cross Section: perpendicular cut

1.3. Oblique: cut at an angle

2. Cell Shapes

2.1. Squamous

2.2. Cuboidal

2.3. Columnar

3. Intercellular Junctions

3.1. Tight Junctions: prevents passage between cells; GI and urinary tract

3.2. Gap Junctions: Passage of small solutes; cardiac and smooth muscle

3.3. Desmosomes: used in stretch compared to a rubber band connection; uterus and heart

4. Simple Squamous

4.1. Found in intestines

5. Simple Cuboidal

5.1. Found in liver. kidney, thyroid, and salivary glands; found in absorption, secretion, and mucous membranes

6. Simple Columnar

6.1. Found in GI tract, kidneys, and uterus; absorption and secretion, mucous secretion

7. Histology: study of tissues

7.1. Epithelial tissue

7.2. connective tissue

7.3. muscular tissue

7.4. nervous tissue

8. Characteristic of tissue extracellular matrix determines characteristics of said connective tissue.

9. To prep specimen: Fix, Section, Stain

10. Tissue Organization

10.1. Epithelium (facing outside)

10.2. Connective Tissue

10.3. Muscle Tissue

11. Epithelial tissue= covering tissue

11.1. Functions include: secretion, absorption, protection, filtration

11.2. Special Characteristics: avascular, highly mitotic, apical and basal side

11.3. Simple Epithelium: one layer

11.4. Stratified Epithelium: multiple layers

12. Pseudostratified

12.1. secretes and propels mucus