Chapter 4.2: Tissues
Squamous Thin and flat Nucleus in the thickest part of the cell
Cell Shapes
Figure 4.4
Cuboidal Square
Cell Shapes cont…
Figure 4.4
Columnar Rectangular
Cell Shapes cont…
Figure 4.4
Protected regions where absorption takes place
Ex: Kidneys, Lungs, Heart
Simple Squamous Epithelium
Figure 4.4a
Limited protection where absorption/secretion happens
Ex: Pancreas, Salivary Glands
Simple Cuboidal Epithelium
Figure 4.4b
Some protection, absorb, secrete Ex: Stomach, Intestines
Simple Columnar Epithelium
Figure 4.4c
All cells touch basement membrane Nuclei at different places Looks layered Have cilia Ex: Nasal cavity, Trachea, Bronchi
Pseudostratified Epithelium
Figure 4.5a
Able to stretch Contain more than one shape of cells Ex: Bladder
Transitional Epithelium
Figure 4.5b
Where severe stess happens Surface of skin
Stratified Squamous Epithelium
Figure 4.5c
Mode of Secretion Merocrine Glands Produces mucus Lubricates, Barrier, Perspiration
Glandular Epithelium
Figure 4.6a
Apocrine Glands Milk production Thicker, milkier sweat
Modes of secretion cont…
Figure 4.6b
Holocrine Glands Skin oils Waxy coating on hair
Modes of Secretion cont…
Figure 4.6c
Serous—water containing enzymes Mucous—thick, slippery mucus Mixed—produces both
Types of Secretions
Figure 4.6aa
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