Answer: The basic tissue structure of the mucosa layer of the alimentary canal consists of:
--> mucous membrane
--> lamina propria
--> muscularis mucosa
Explanation:
The MUCOUS MEMBRANE forms the innermost layer of the alimentary canals which includes the stomach and the duodenum (small intestine) . It's major functions is protection, secretions and absorption. The type of mucous membrane found in the stomach and duodenum is the Columnar epithelial cells. Not numerous gastric glands are situated below the surface in the mucous membrane of the stomach. They consist of specialised cells that secrete gastric juice that aids in the digestion of food. While the duodenal mucosa consists of mucous producing goblet cells. These cells produce a viscous, alkaline mucus that protects against the acidic gastric juices and pepsin. The folding of these mucosal cells (microvilli) provides a large surface area to optimize nutrient absorption.
The LAMINA PROPRIA: This layer separates the mucous membrane and the muscularis mucosa. It is made up of connective tissues which supports the blood vessels that nourishes the inner epithelial layer. In both the stomach and duodenum, digested nutrients are absorbed into the capillaries.
MUSCULARIS MUCOSA: This is made up of thin layer of smooth involuntary muscles. The contraction and relaxation of these muscle layers occurs in waves, which push the contents of the tract onwards. This type of contraction is called peristalsis which occurs in the duodenum. While in the stomach, these muscles allows for the churning motion characteristic of gastric activities.
The mucosa layer in the alimentary canal comes into direct contact with food and consists of three layers: epithelium, lamina propria, and muscularis mucosae. The stomach mucosa secretes mucus, hydrochloric acid, and digestive enzymes, while the duodenum's mucosa contains glands that neutralize stomach acid, protecting the intestinal wall and enabling absorption.
The mucosa layer in the alimentary canal is the innermost layer that comes into direct contact with food. This layer consists of three sublayers: epithelium, lamina propria, and muscularis mucosae. The epithelium is made up of simple columnar cells responsible for secretion and absorption. The lamina propria is composed of loose connective tissue supporting the epithelium, and the muscularis mucosae is a thin layer of muscle that causes local movement of the mucosa.
The mucosa in the stomach has a special epithelium that secrets mucus, hydrochloric acid, and digestive enzymes, aiding in both protection and the breakdown of food. Its unique feature is the presence of gastric pits and parietal cells that secrete hydrochloric acid.
In contrast, the mucosa in the duodenum, part of the small intestine, contains Brunner's glands which produce an alkaline secretion rich in bicarbonate and mucus. The purpose of this is to neutralize stomach acid and protect the intestinal wall, enabling absorption to take place.
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Answer:
would increase, population, and chances of getting more food for survival.
Explanation:
By the increase in secondary consumers, that would give more food and energy and the ease of finding food for the tertiary consumers, which will give more energy for activities and therefore sexual activity can no longer be lacking the energy barrier, and due to that the population of tertiary consumers increases, eventually leading to the same effect and increase in Quaternary consumers.
Answer:
Explanation:
Viruses are a limitation to cell theory.
According to cell theory, all cells arise from pre - existing cells. But viruses lack any membranes and do not show the characteristics of life unless they enter a living body and use its cell machinery to multiply.
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Answer:
- Gray-bodied with long wings: 56.25%.
- Gray bodied with vestigial wings: 18.75%.
- Black-bodied with long wings: 18.75%.
- Black-bodied with vestigial wings: 6.25%.
Explanation:
Hello,
In this case, we can write the involved two-factor Punnet square as:
GL Gl gL gl
GL GGLL GGLl GgLL GgLl
Gl GGLl GGll GgLl Ggll
gL GgLL GgLl ggLL ggLl
gl GgLl Ggll ggLl ggll
Thus, we can find the following phenotypes:
- Gray-bodied with long wings: 9.
- Gray bodied with vestigial wings: 3.
- Black-bodied with long wings: 3.
- Black-bodied with vestigial wings: 1.
In such a way, considering each square having a 6.25% percent, the resulting offspring has the following percentages:
- Gray-bodied with long wings: 56.25%.
- Gray bodied with vestigial wings: 18.75%.
- Black-bodied with long wings: 18.75%.
- Black-bodied with vestigial wings: 6.25%.
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The correct answer is the option (A) heparin.
DVT refers to a condition called the deep vein thrombosis when a blood clot occurs in the deep veins of the legs in the body. PE refers to the Pulmonary embolism when a blood clot is observed in the artery of the lungs.
The drugs used in the treatment of DVT and PE are called the anticogulants which interfere with the process of blood clot formation. Heparin and warfarin are the two older anticoagulants used in the prevention and treatment and prevention of DVT and PE. Heparin is given intravenously to treat DVT and PE whereas, warfarin is taken as a tablet or pill through the mouth. Heparin allows the body's clot lysis mechanism to break down the existing clots and it is also a natural anticoagulant produced by the basophils and the mast cells of the blood.
Thus, heparin is the old drug that is used subcutaneously to prevent DVT in high-risk patients and intravenously to treat DVT and PE.