1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Agata [3.3K]
3 years ago
9

The first sphincter encountered in the alimentary canal is the: The first sphincter encountered in the alimentary canal is the:

pyloric sphincter. ileocecal sphincter. gastroesophageal sphincter. upper esophageal sphincter.
Biology
1 answer:
Arte-miy333 [17]3 years ago
4 0

Answer:

The correct answer is: upper esophageal sphincter.

Explanation:

The alimentary canal is a very long tract responsible for the digestion of the food. It is composed of several organs with many different and important functions. The alimentary canal also has a few sphincters, which are muscular valves that open and close when needed for the food to pass or be retained.

The first sphincter is the upper esophageal sphincter. One particularity of this sphincter is that is one of the few sphincters in the body that opens and closes under our conscious control, which happens when we decide to swallow our food.

From the first to the last, the order of the sphincters in the gastrointestinal tract is: upper esophageal sphincter, lower esophageal sphincter or gastroesophageal sphincter, pyloric sphincter, ileocecal sphincter, and anus.

You might be interested in
Cual es la teoria mas acertada de la creación del universo​
notka56 [123]
La tierra nose la verdad
4 0
2 years ago
Epigenetics may be defined as changes in the expression of a gene or set of genes by _______ and _______.
nataly862011 [7]

Epigenetics is the study of how DNA methylation and alterations to chromosomal proteins affect a gene or group of genes express themselves. For changes in a gene's expression, both of these are need.

In a biological process called DNA methylation, methyl groups are added to the DNA molecule. A DNA segment's activity can be altered by methylation without the sequence changing. DNA methylation usually inhibits transcription of genes when it occurs in a gene promoter.

Epigenetics literally translates to "along with changes in genetic sequence." Any procedure that modifies gene activity without altering DNA sequence and results in modifications that can be passed on to daughter cells is now included in the term. Is called Epigenetics.

Learn more about Epigenetics here

brainly.com/question/2670031

#SPJ4

5 0
1 year ago
Why is it important for something to satisfy all six characteristics of life in order to be considered a living thing?
Paraphin [41]
We all know that all living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
6 0
2 years ago
What is the full form of ATP ?
Katyanochek1 [597]
The full form of ATP is ANANTAPUR Indian Railway Station ATP Ambient Temperature Pressure Chemistry ATP All Trace Particles Chemistry ATP Adenosine Tri-phosphate. But there are alot more :)
8 0
2 years ago
In the alternation of generations life cycle fertilization requires two A. sporophytes. B. gametophytes. C. gametes. D. spores.
Harrizon [31]
The correct answer is C. Gametes
8 0
3 years ago
Read 2 more answers
Other questions:
  • What type of investigation to plant height if the amount of available light is reduced due to global dimming
    11·1 answer
  • A good conclusion restates the hypothesis so that the reader
    7·1 answer
  • Lab work. Which rna nucleotide can pair with the thymine at the beginning of the strand? Drag it into the DNA antisense strand t
    7·2 answers
  • T
    6·2 answers
  • The disappearance of a species from all or some of its geographical range is called _____. A. extinction B. deforestation C. bio
    11·2 answers
  • Too much socializing in a work place can ?
    13·1 answer
  • if a cell displays a great amount of activity one possible reason for this could be that it has large quantities of???? 3 answer
    14·1 answer
  • I need help ); anyone please
    8·1 answer
  • The process of counting a portion of a population of a species in a particular area and using that number to estimate the total
    8·2 answers
  • The attraction of water to other polar substances is called.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!