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- **Pseudostratified Columnar Epithelium:** Lots of cilia and lines respiration tract. - **Apical Layer** - **Basal layer** - **Two types of Stratified Squamous Epithelium:** - **Nonkeratinized:** Found on wet surfaces - oral cavity. - **Keratinized:** Sure structure made of dead cells...

- **Pseudostratified Columnar Epithelium:** Lots of cilia and lines respiration tract. - **Apical Layer** - **Basal layer** - **Two types of Stratified Squamous Epithelium:** - **Nonkeratinized:** Found on wet surfaces - oral cavity. - **Keratinized:** Sure structure made of dead cells and has the protein keratin. - **Membranes:** Sheets of tissue composed of cells, the inner of cavities. - **What are the four different types of membrane?** - **Mucous:** Herestonia affets mucous membrane - keeps area moist - open to external environment. - **Serous:** Plana membrane - Two layers - Parietal Outside - Visceral Inside - writes - **Synovial:** Lines cavity of freely moving joint - key joint - Hip Joints. - **Cutaneous** - Stratified Squamous - ontop connective tissue - Skin. - **Importance of epithelial knowledge in dentistry?** - Diagnosis, Treatment, planning, patient care. If we have a better understanding on the tissue, we can give a better diagnosis if and when we ever see any abnormals. - **Importance of membrane knowledge in dentistry?** - Membranes act as barriers to pathogens and toxins. Understanding roles of mucous membranes help build strategies for infection control.