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
il63 [147K]
2 years ago
14

Muscles that guard entrances and exits of internal passageways are ________ muscles.

Biology
1 answer:
allochka39001 [22]2 years ago
6 0

The answer to the given question will be that the muscles that guard the entrances and exits of the internal passage are known as sphincter (circular muscles).

  • Due to their structure and controllability, skeletal circular muscles differ from their smooth muscle counterparts.
  • The muscularis mucosa, which is mostly found in the stomach, is composed of smooth muscle.
  • The longitudinal layer shortens the tract while the circular muscle layer in the muscularis externa prevents food from moving backward.The human body contains at least 50 or 60 different types of sphincters.
  • Some are quite small, like the many precapillary sphincters that line the circulatory system's blood vessels.
  • Lower esophageal sphincter (LES), pyloric sphincter (PS), ileocecal sphincter (ICS), and internal sphincter are the four different smooth muscle sphincters found in the GI system (IAS).

Hence, the answer is that the muscles that guard the entrances and exits of the internal passage are known as sphincter (circular muscles).

Learn more about muscles here:

brainly.com/question/13920046

#SPJ10

You might be interested in
Which hormone released by the highlighted structure inhibits the secretion of fsh only inhibin?
qwelly [4]

Inhibin hormone released by the highlighted structure inhibits the secretion of FSH only.

<h3>What is inhibin hormone?</h3>
  • A protein called inhibin is secreted by the granulosa cells in women and the Sertoli cells in men.
  • It decreases the amount of LH-releasing hormone in the hypothalamus and prevents the pituitary gland from producing and releasing follicle-stimulating hormone.
  • Inhibin is a factor in the feedback control of FSH secretion in both males and females going through puberty.
  • Follistatin suppresses FSH-subunit expression like inhibin, whereas activin enhances it, which in turn influences FSH production and secretion.
  • Inhibin A is secreted by the corpora lutea and dominant ovarian follicles in women, which helps to explain why levels are so high during the late follicular and luteal stages.
  • During the late luteal and early follicular phases of the menstrual cycle, inhibin B is reciprocally raised.

Learn more about inhibin here:

brainly.com/question/17257108

#SPJ4

Disclaimer: The question given in the portal is incomplete. Here, The complete question.

Question: Which hormone released by the highlighted structure inhibits the secretion of FSH only?

5 0
1 year ago
Number 14 please I'm not sure if it is right
cricket20 [7]
The actual answer is, "A", an ocean trench.

You can find out more about them by researching them up on Google, it's only a few phrases and a hit on the enter key :P
8 0
3 years ago
Which is the term that describes when the fossil record shows that two groups of organisms are related?
777dan777 [17]

Answer:

common ancestor.

Explanation:

when two groups of organism are related it means they share a common ancestry but may be they are not a direct parent but can relate to there far back generation.

Evidence from fossil's records are used to study that today how much organisms have changed themselves according to the environmental changes on earth. DNA and genetic codes mainly shows the shared common ancestry.

6 0
3 years ago
Read 2 more answers
Which cell type is produced by mitosis?
rodikova [14]

Answer:

Two genetically identical daughter cells are produced from a single parent cell in mitosis

6 0
3 years ago
Why are Cells sometimes referred to as "Life's Atoms?
Marysya12 [62]

Answer:

Cells are sometimes referred to as "life's atoms" because there the basic units of life. All cells are surrounded by a structure called the cell membrane — which, serves as a clear boundary between the cell's internal and external environments.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What does "semi-permeable" mean
    5·2 answers
  • Which type of light is least useful for photosynthesis in terrestrial plants?
    7·1 answer
  • A plant is getting energy from the Sun, which helps it grow. Explain how energy is being changed from one form into another.
    5·2 answers
  • Which principle states that during hamate formation genes for different traits separate whiteout influencing each other’s inheri
    8·1 answer
  • Explain the relationship between autotrophs heterotrophs and decomposers In 4 to 5 sentences
    10·1 answer
  • A Pansy is a small flowering plant. You often see many red and many white flowers in outdoor garden beds. If the red and white c
    6·1 answer
  • NEED HELP!!!!!! QUICK PLEASE!
    12·2 answers
  • Which is a density-dependent factor?
    7·1 answer
  • Mention the effect of mosquito and write down what can be done to control it.​
    8·1 answer
  • Select all that apply.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!