Chest pain refers to pain felt anywhere in the chest area from the level of your shoulders to the bottom of your ribs. It is a common symptom. There are many causes of chest pain. This leaflet only deals with the most common.
Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production.
Simple squamous epithelium can be studied by looking at cells which line blood and lymph vessels. These flattened cells are called endothelial cells . The nuclei are frequently found protruding into the lumen of the vessel. Observe the numerous large blood vessels present in the periphery of this section.