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professor190 [17]
2 years ago
9

Why does the stomach have three layers of muscle?

Biology
1 answer:
vfiekz [6]2 years ago
3 0

Answer:

The three layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles. Construction of these muscles helps mix and break the contents into a suspension of nutrients called chyme and propels it into the duodenum.

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Kicking your leg when your knee is tapped and quickly pulling your hand back when you accidently touch a hot stove are both exam
Lynna [10]
The answer is reflexes. Reflexes are usually involuntary muscle movements that happen almost instantaneously in response to stimuli. A reflex is made possible by neural pathways called reflex arcs which can act on an impulse before that impulse reaches the brain. It is a survival mechanism evolved by the body used in the objective to escape danger.
7 0
3 years ago
Read 2 more answers
In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae.
34kurt

Given our understanding of genetics, we can confirm that the gene in question is of the homeotic type.

<h3>What is a gene? </h3>
  • In biology, we refer to a gene as the most basic unit of genetic information.
  • It is a segment of DNA that encodes for a certain trait that <u>may or may not be expressed.</u>
  • A gene carries the information for a specific trait, for example:

             1) Eye color

             2) Body organization

             3) Height

<h3 /><h3 /><h3>What does it mean for a gene to be homeotic?</h3>
  • In the case of this question, the gene in question is a homeotic gene.
  • Homeotic genes are those that are in charge of the organization of the organism's body.
  • These genes control the <u>general pattern of the body</u>, such as where the arms and legs will be, and so on.
<h3 /><h3 />

Therefore, given the definition of a homeotic gene, we can confirm that this is the type that best fits the description of the mutation in the question since it affected the formation and normal organization of the body.

To learn more about homeotic genes visit:

brainly.com/question/7991651?referrer=searchResults

4 0
2 years ago
A stone is thrown upward with velocity 72 km/hr. if air resistance is neglected, find the maximum height travelled by it and the
labwork [276]

Answer:

s= 20.04m,   t=2.022s

Explanation:

4 0
3 years ago
Plant meristems produce new cells by which of these processes?
OverLord2011 [107]

Answer:

mitosis

Explanation:

because mitosis is a continuous cell division process which occur in the somatic cell

5 0
2 years ago
You are studying with a classmate, who explains that increasing the amount of nutrients in a lake helps submerged, rooted aquati
Nataly_w [17]

Answer:

E-You disagree because the resulting increase in phytoplankton at the surface would inhibit sunlight from penetrating into the water, thus inhibiting photosynthesis in the submerged plants.

Explanation:

Eutrophication is the process wherein nutrients specifically phosphorus and nitrogen are present in excess in a water body such as a lake. The increased concentration of nutrients promoter the growth of cyanobacteria and algae such as phytoplankton.

The increased population of phytoplankton in surface water reduces the oxygen availability and clarity of water for the organisms present in deeper layers.  Also, reduced clarity of water limits the amount of solar radiations penetrating the surface water to reach the deeper layers.

Increased nutrient levels of the lake would rather inhibit the growth of submerged plants due to reduced availability of sunlight as caused by presence of phytoplankton in surface water.  

5 0
3 years ago
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