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sergij07 [2.7K]
2 years ago
5

The lower esophageal sphincter surrounds the upper opening into the stomach. If this sphincter failed to properly constrict, the

re might be a problem with _____.
Biology
1 answer:
seropon [69]2 years ago
5 0

Answer:

Regurgitation of acidic stomach contents into the esophagus, commonly called "heartburn"

Explanation: Esophagus is the part of the alimentary canal,which is a tube that transports food and water substance from the mouth to the stomach. Esophagus has an upper Esophagus sphincter and and the lower Esophagus sphincter. The lower Esophagus sphincter contains muscles that connects the Esophagus and the stomach. When the lower Esophagus sphincter is closed it prevents the movement of Acids and contents in the stomach from traveling backwards from the stomach. When it fails to effectively constrict it causes what is called "HEARTBURN".

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It is of paramount importance to use primary, secondary, and tertiary sources in research.
Anestetic [448]

<span>The correct answer is (a) True, it is of paramount importance to use primary, secondary, and tertiary sources in research. Researching includes using primary sources as they contain original materials on which research is based, but also using second sources as interpretations and evaluations as other researcher’s point of view. That also apply for tertiary sources that  represent distillated and collected information of primary and secondary sources.</span>

5 0
2 years ago
The events listed below generally take place during meiosis.I. Synapsis occurs. II. Crossing-over is completed. III. Condensatio
pickupchik [31]

Answer:

III. Condensation of chromosomes begins.

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II. Crossing-over is completed.

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Explanation:

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Leptotene is followed by zygotene of prophase I during which the homologous chromosomes are paired together. The process is mediated by the synaptonemal complex. As the homologous chromosomes are paired, each pair is visible as a tetrad as each of the chromosomes of a pair has two sister chromatids.

The exchange of part of chromatids occurs during crossing over. Crossing over is the event of the pachytene stage of prophase I. After crossing over, the homologous chromosomes begin to separate from each other during diplotene but stay paired at the points of crossing over. These points are called chiasmata. Diakinesis of prophase I is marked by the dissolution of chiasmata.

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What exactly do white blood cells inspect to be sure a cell belongs and is not infected ?
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Here's the answer in picture form

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In physics a players natural resistance to an unbalanced force is called?
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