A cheek cell, an epithelial cell found in the tissue on the inside lining of the mouth, continually secretes mucus to maintains a moist environment in the mouth. Together with salivary glands that secrete saliva, the cheek cells supply enough moisture in the mouth for enzymes to thrive. This moisture softens food, assists in swallowing and starts digestion.Continue Reading
The epithelial cells in the lining of the mouth are referred to as basal mucosa and divide roughly every 24 hours. They can easily be obtained through a simple swab or a mouth rinse. The cheek cell is very simple, but it contains the entire genetic makeup of the person's body. For this reason, cheek cells are frequently used to establish paternity and other investigations involving DNA. More recently, researchers have discovered that the cheek cell can be used to measure a person's likelihood of having high blood pressure.
A human cheek cell is thin, flat and irregularly shaped and has a large nucleus that contains the DNA. Its plasma membrane helps the cell to maintain suitable temperature while giving it its shape. Since it is selectively permeable, it only allows certain molecules into and out of the cell. Its cytoplasm contains water that dissolves nutrients and enzymes.Learn more about Cells
The major function of hemoglobin is to transport oxygen from the lungs to the body's tissues and then transport carbon dioxide out of the tissue back to the lungs. Each red blood cell contains approximately 280 million hemoglobin molecules.Full Answer >
A group of cells that performs a similar function is known as a tissue. Multicellular organisms such as animals all contain differentiated cells that have adapted to perform specific functions. These differentiated cells group together to form tissues. A group of tissues that perform similar functions are known as organs.Full Answer >
A group of similar cells that work together to perform a common function is known as a tissue. Four types of tissues exist: epithelial, connective, muscle and nervous. The tissues are classified based on their anatomy and function.Full Answer >
Teach PE points to bands of myosin and actin within the structural units of skeletal muscle as cause for the tissue's striated appearance. The units they are contained in are called sarcomeres, which are structurally distinct regions within individual muscle fibers.Full Answer >