ANP 1105 Chapter Notes - Chapter 4: Basal Lamina, Respiratory Tract, Epithelial Polarity

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Tissues: groups of cells that are similar in structure and perform a common or related function. There are four primary tissues: epithelia: covering, connective: support, muscle: movement, nervous: control. Histology: the study of tissues and their cellular organizations. A sheet of cells that covers a body surface or line a body cavity. Two forms occur: covering and lining epithelium: Outer layer of the skin; dips into and lines the open cavities of the urongential, digestive, and respiratory systems; covers walls and organs of the closed ventral body: glandular epithelium: Functions: protection: skin, absorption: digestive tract, fileration: kidney, excretion: kidney, secretion: glands, sensory reception: taste buds. Special characteristics: polarity: a) apical surface: upper free surface exposed to the body exterior b) basal surface: the cavity of an internal organ and lower attached. Apical have microvilli that increase the surface area for absorption or secretion. Basal have a basal lamina which is adjacent to the basal suface.