Epithelial Tissue Flashcards
Function of Squamous Epithelial Tissue
Function: One cell thick, form thin,
smooth, flat layers. Ideal for rapid diffusion
E.g. alveoli in lungs - rapid diffusion of oxygen
Function of Ciliated Columnar Epithelial Tissue
Function: Protect the lungs from infection by sweeping away pathogens and secreting mucus to trap pathogens
Function of Endothelial Tissue
Function: The cells provide a short diffusion pathway for the movement of various substances, such as:
Products of digestion into the blood capillaries
Blood plasma and tissue fluid in and out of blood capillaries.
Location of Squamous Epithelial Tissue
Location: Lines organs and surfaces
Location of Ciliated Columnar Epithelial Tissue
Location: Line the trachea in the respiratory system, column-shaped ciliated cells with hair-like structures called cilia covering the exposed cell surface
Location of Endothelial Tissue
Location: Found lining the heart, blood vessels and lymphatic vessels
What does damage does smoking cause to the squamous epithelial tissue
Damage caused by smoking: Smoking irritates and causes inflammation and scarring in the epithelium tissue of the lungs.
The alveoli walls become thicker due to scarring and produce more mucus. The damage to the air sacs causes emphysema, and the lungs lose their natural elasticity
How do the ciliated columnar epithelial tissue protect the lungs
How the lungs are protected:
They secrete mucus to help trap any unwanted particles that are present in the air that you breathe in. This protects your lungs because it prevents bacteria from reaching the
alveoli
How does arteriosclerosis develop in the endothelial tissue
How arteriosclerosis develops: Carbon monoxide and high blood pressure can damage the inner lining of the arteries. White blood cells repair the damage and
encourage the growth of smooth muscle and the deposition of fatty substances, such as cholesterol, under the endothelium lining of arteries, not on the surface. This
process of deposition is called atherosclerosis
