Answer:
Lower esophageal sphincter
Explanation:
The biological valves are the muscular structures composed of the smooth muscles which form thick tubular structure to allow the controlled movement of any material through it. The valves in the digestive system are known as the sphincters.
The sphincters control the unidirectional movement of the eaten food, chyme and the bolus in the digestive tract.
A sphincter is present at the lower portion of the oesophagus (food pipe) which contracts to prevent the backflow of the food from the stomach and since the sphincter is present at the lower side of the oesophagus, therefore, is known as the lower esophagal sphincter.
Thus, Lower esophageal sphincter is correct.
Many think that birds evolved from dinosaurs, they both have hollow bones, recent studies show that some Dinosaurs had feathers. if you were to compare the form of a Dinosaur to a chicken you would see that they walk and stand like each other. Also, the Genes show that they might have a distant relative. I hope this helps
Answer:
Considering the organization of the body the level of organization in which proteins like collagen are found is the molecular level, and this level of organization allows the construction of the structure and functions of the whole body.
Explanation:
Collagen is a protein molecule that belongs to the molecular organization level, like all biomolecules.
Proteins have multiple functions in the body:
- <em>They participate in the construction or structure of the body.
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- <em>They form specialized proteins, the enzymes, to facilitate organic chemical reactions.
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- <em>They are part of the structure of cell membranes, allowing cellular recognition and transmembrane transport.
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In this way <u>the protein molecules, belonging to the molecular level, contribute to the organization of the whole body</u>.
Answer:
so if one dies the other doesn't as well, then the other can find another cell to reproduce more cells.
Explanation:
