Question
I'm working on some Physiology homeworkand this question has been bothering me.
"Connective tissue with a gelatinousmatrix fibers. This tissue is found in the tracheal wall; itprovides support and prevents the trachea from collapsing." I have to figure out what type of tissuethey are talking about. I feel like this fits the exactdeffinition of Hyaline Cartilage but the answer keeps coming upwrong. If anyone has any idea I would really appreciateit. This question is not associated with any bookquestion. Thanks a lot I'm working on some Physiology homeworkand this question has been bothering me.
"Connective tissue with a gelatinousmatrix fibers. This tissue is found in the tracheal wall; itprovides support and prevents the trachea from collapsing." I have to figure out what type of tissuethey are talking about. I feel like this fits the exactdeffinition of Hyaline Cartilage but the answer keeps coming upwrong. If anyone has any idea I would really appreciateit. This question is not associated with any bookquestion. Thanks a lot
Explanation / Answer
The wall of the trachea is made up of four distinct tissuelayers. Along the luminal surface, the trachea is lined byrespiratory mucosa (mucous membrane). Goblet cells found in theepithelium produce mucus, which warms, moistens, and removesforeign particles from the air as it flows through the trachea.Deep to the mucosa is the submucosa. Like the lamina propria, thesubmucosa is primarily composed of loose (= areolar) connectivetissue. Many blood vessels, neurons, and glands are also present.The (seromucous) glands secrete a combination of water and mucus tothe luminal surface of the trachea through narrow ducts. The mucusadds to that secreted by the goblet cells. External to thesubmucosa is a layer containing sixteen to twenty hyaline cartilagerings. In back, the cartilaginous rings are incomplete, giving thema characteristic C-shape. When large food particles pass down theesophagus, the tracheal wall is able to partially collapse due tothe open rings. The opposing ends of each open ring are attached bythe trachealis muscle. This small band of smooth muscle controlsthe lumen size of the trachea. When breathing out the musclecontracts to help force the air out of the trachea, and whenbreathing in the muscle relaxes. The outer-most layer of thetrachea, the adventitia, is a band of loose connective tissue thatprimarily functions to loosely hold the trachea in place in thechest cavity. hope this helps! dont forget to rate! :)