![Page 1: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/1.jpg)
Chapter 4.2: Tissues
![Page 2: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/2.jpg)
Squamous Thin and flat Nucleus in the thickest part of the cell
Cell Shapes
![Page 3: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/3.jpg)
Figure 4.4
![Page 4: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/4.jpg)
Cuboidal Square
Cell Shapes cont…
![Page 5: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/5.jpg)
Figure 4.4
![Page 6: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/6.jpg)
Columnar Rectangular
Cell Shapes cont…
![Page 7: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/7.jpg)
Figure 4.4
![Page 8: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/8.jpg)
Protected regions where absorption takes place
Ex: Kidneys, Lungs, Heart
Simple Squamous Epithelium
![Page 9: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/9.jpg)
Figure 4.4a
![Page 10: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/10.jpg)
Limited protection where absorption/secretion happens
Ex: Pancreas, Salivary Glands
Simple Cuboidal Epithelium
![Page 11: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/11.jpg)
Figure 4.4b
![Page 12: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/12.jpg)
Some protection, absorb, secrete Ex: Stomach, Intestines
Simple Columnar Epithelium
![Page 13: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/13.jpg)
Figure 4.4c
![Page 14: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/14.jpg)
All cells touch basement membrane Nuclei at different places Looks layered Have cilia Ex: Nasal cavity, Trachea, Bronchi
Pseudostratified Epithelium
![Page 15: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/15.jpg)
Figure 4.5a
![Page 16: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/16.jpg)
Able to stretch Contain more than one shape of cells Ex: Bladder
Transitional Epithelium
![Page 17: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/17.jpg)
Figure 4.5b
![Page 18: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/18.jpg)
Where severe stess happens Surface of skin
Stratified Squamous Epithelium
![Page 19: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/19.jpg)
Figure 4.5c
![Page 20: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/20.jpg)
Mode of Secretion Merocrine Glands Produces mucus Lubricates, Barrier, Perspiration
Glandular Epithelium
![Page 21: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/21.jpg)
Figure 4.6a
![Page 22: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/22.jpg)
Apocrine Glands Milk production Thicker, milkier sweat
Modes of secretion cont…
![Page 23: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/23.jpg)
Figure 4.6b
![Page 24: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/24.jpg)
Holocrine Glands Skin oils Waxy coating on hair
Modes of Secretion cont…
![Page 25: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/25.jpg)
Figure 4.6c
![Page 26: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/26.jpg)
Serous—water containing enzymes Mucous—thick, slippery mucus Mixed—produces both
Types of Secretions
![Page 27: Squamous Thin and flat Nucleus in the thickest part of the cell](https://reader036.vdocuments.net/reader036/viewer/2022062422/56649f175503460f94c2e8d5/html5/thumbnails/27.jpg)
Figure 4.6aa