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The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs. They are at several places continuous with skin: at the nostrils, the lips, the ears, the genital area, and the anus. The sticky, thick fluid secreted by the mucous membranes and glands is termed mucus. The term mucous membrane refers to where they are found in the bodyand not every mucous membrane secretes mucus.Body cavities featuring mucous membrane include most of the respiratory system. The glans penis (head of the penis) and glans clitoridis, along with the inside of the prepuce (foreskin) and the clitoral hood, are mucous membranes. The urethra is also a mucous membrane. The secreted mucus traps the pathogens in the body, preventing any further activities of diseases.
Interstellar dust
The word therosis appears to be a slang word with unknown origin. This word apparently is a disease that men can get in eight different ways.
Yes. The outer membrane is similar to modern eukaryotic membranes, such as the plasma membranes of animals and plants. The inner membrane is similar to modern prokaryotic membranes, found in bacteria. This difference has been taken as one piece of evidence to support the theory of the endosymbiotic origin of these two organelles, i.e. the idea that each of these organelles formed originally from the engulfing of a prokaryotic cell by a eukaryotic one.
Answer is not exactly known, as origin of first unicellular organisms is unknown. First multicellular organisms appeared in late Precambrian. Look up Burgess Shale for details.
mucous membranes
The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs. They are at several places continuous with skin: at the nostrils, the lips, the ears, the genital area, and the anus. The sticky, thick fluid secreted by the mucous membranes and glands is termed mucus. The term mucous membrane refers to where they are found in the bodyand not every mucous membrane secretes mucus.Body cavities featuring mucous membrane include most of the respiratory system. The glans penis (head of the penis) and glans clitoridis, along with the inside of the prepuce (foreskin) and the clitoral hood, are mucous membranes. The urethra is also a mucous membrane. The secreted mucus traps the pathogens in the body, preventing any further activities of diseases.
The duration of Of Unknown Origin is 1.47 hours.
Fire of Unknown Origin was created in 1981.
Of Unknown Origin was created on 1983-11-24.
It is a motherless calf. Origin unknown.
Believe it or not, its origin (etymology) is unknown.
The cast of Unknown Origin - 2008 includes: Jared Liebenau as Alien
Agnogenic
The Jedi Way.
Origin unknown but the meaning is saints or sanctified in spanish.
Hetrick is a name of unknown origin.