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scoray [572]
2 years ago
10

At the superior end of the esophagus, the superior esophageal sphincter is a thickened ring of ______ muscle marking the area wh

ere the esophagus and the pharynx meet.
Biology
1 answer:
Hatshy [7]2 years ago
5 0

The superior esophageal sphincter is a <u>muscular ring</u> that separates the pharynx from the esophagus, has voluntary activity and is responsible for initiating swallowing.

What is the superior esophageal sphincter?

It is located immediately after the pyriform sinuses, it is a muscular ring located in the high pressure area between the pharynx and the esophagus.

This prevents the passage of air into the digestive tract during inspiration and the reflux of gastric material into the pharynx, relaxing to open the esophagus.

In order for a muscle-building athlete to keep muscles in good shape, it is necessary to synthesize more muscle protein than is consumed, which is known as nitrogen balance..

Therefore, we can conclude that the superior esophageal sphincter is a muscular ring that separates the pharynx from the esophagus, has voluntary activity and is responsible for initiating swallowing.

Learn more about esophagus here: brainly.com/question/14762195

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Directions: Consider a pedigree that is tracking an autosomal recessive trait, where two recessive alleles (tt) result in the in
Talja [164]

Answer:

I think this should be the chart you were interested in...

Explanation:

                                          Individual             Shape in              shaded

                                          phenotype           pedigrees

Male with gen. TT             PTC taster             square                No

Male with gen. Tt              PTC taster             square                No

Male with gen. tt               Non-taster             square                Yes

Female with gen. TT        PTC taster              Circle                  No

Female with gen. Tt         PTC taster              Circle                  No

Female with gen. tt          Non-taster              Circle                 Yes

*gen- genotype

4 0
3 years ago
HELP ME!!!!
ankoles [38]

The Psalmist expresses his awe and thanksgiving to God for his affection by continually singing Him songs of praise.

The simplest way to thank God is to see Him everywhere and appreciate His presence in our life. It's important for us to remember that we are living because of Him.

The Psalms contain powerful quotes for giving thanks and finding blessings. Psalms 1 - 150 showed how the Psalmist was thanking God by singing praises to Him. The unifying theme of Psalms is praise for God.

Learn more about Psalms on:

brainly.com/question/2998438

4 0
3 years ago
How are ice caps formed?
Eva8 [605]
Ice caps form because high-latitude regions receive less energy in the form of solar radiation from the Sun than equatorial regions, resulting in lower surface temperatures.

# eazy
4 0
3 years ago
What does the small intestine do in the digestive system?
Montano1993 [528]
<span>is absorption of nutrients and minerals from food.</span>
7 0
3 years ago
Drag the pink labels onto the pink targets to identify the two main phases of the cell cycle. Then drag the blue labels onto the
zavuch27 [327]

Answer:

There is no diagram provided so I will just explain the mitotic cell cycle.

Here’s a quick basic arrangement in chronological order interphase, mitosis, and finally cytokinesis.

So first you start with interphase which consist of three phases G1 phase, S phase, G2 phase. Cellular growth occurs in G1 phase of interphase this is followed by S phase which is simply when DNA replication occurs. Final this is followed by G2 phase or further growth in preparation for mitosis and/or meiosis.  

I am only going to explain mitosis but just so I don’t confuse you meiosis can also follow interphase. So mitosis consist of four phases. Prophase, metaphase, anaphase, and telophase.

Prophase: in this phase the nuclear membrane would dissipate and the chromosomes would condense.

Metaphase: then in metaphase the chromosomes would align in the center of the cell and spindle fibers or microtubules would began growth from the centrioles.  

Anaphase: by the start of this phase spindle fibers would have attached themselves to the chromosomes kinetochores. In this phase the chromatids would separate and that’s really it as you can tell this is the shortest phase in mitosis.

Telophase: finally the chromosomes would be brought to the polar opposite ends of the cell and the nuclear membrane would reform. Also the chromosomes condensed chromosomes would unravel eventually they would be invisible.

Finally the cell would enter cytokinesis were it would split at the cleavage furrow which would have started in anaphase of telophase, all a cleavage furrow is, is microfilaments “pinching the cell” which is just them pulling on either side of the center of the cell.

3 0
3 years ago
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