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ratelena [41]
3 years ago
6

surgery for otosclerosis. The operation was a failure and did not im- prove her condition. What was the purpose of the surgery,

and exactly what was it trying to accomplish
Biology
1 answer:
Zanzabum3 years ago
7 0

Answer:

Otosclerosis is the abnormal growth of bone near the stapes. This abnormal growth of bone around the stapes prevents the sound waves to enter into the oval window and leads to deafness.

There are 3 bones present in the inner ear i.e. malleus, incus, and stapes. The 3 bones coordinate to convert sound waves into the mechanical wave and transmit to the oval window, then cochlea.

Due to otosclerosis, there would be a blockage in the middle ear and thus an individual can't hear.  

To cure this problem stapedectomy has done by surgery. In this process, stape has removed and the diseased bone is removed. In this place, a prosthetic device would insert to allow the sound waves to the inner ear. Sometimes this surgery is not successful. In many cases properly fitted hearing aid will help people of otosclerosis.

In the stapedectomy surgery, surgeons try to remove the ill-fitted bones of stape and insert another substitute for stape bone which can move and helps in creating the vibration of sound waves in the oval window. So that the individual can hear.  

Otosclerosis is more common in women than a man. It is also genetic.

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Classify the mutations as somatic or inherited
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On the basis of inheritance, mutations are somatic or inherited. Inherited or genetic mutations are those mutations that occur in germ cells. These cells are inherited by the offspring from their parents as they are present in gametes. All cells of a multicellular organisms are made up of a single cell zygote.

3 0
3 years ago
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A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will
Tresset [83]

Answer:

The dependent variable is the biological sex of the alligator hatchling.

Explanation:

A hypothesis is essentially a suggested explanation for a specific phenomenon. These hypotheses attempt to offer well-tested reasons for certain observations through experiments.

Experiments are usually carried out under a variety of different conditions to test various hypotheses. To ensure reproducibility, accuracy, and validity of results, several factors must be identified when planning experiments.

For instance, various independent variables are strictly altered and observed while controls are kept constant - this ensures validity and can indicate if the experiment was influenced by external factors. Here, the factor being changed or tested is the temperature, and the factor being observed is the resulting biological sex of the organism.

6 0
3 years ago
Reasons for deforestation ?<br>​
WARRIOR [948]

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Agricultural Activities

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4 0
3 years ago
During what stage does land get ready for the arrival of a new species
34kurt

Answer

           The correct option is B.

Explanation

          Ecological succession of any species is composed of following stages:

A. Migration

            The movement of species from one place to another location for the purpose of setting permanently o temporary is known as migration . Forexample

             Siberian crane (<em>Leucogeranus leucogeranus</em>) that live in the arctic tundra of eastern and western Russia. The eastern population of birds migrate to china while western population of these birds migrate to Iran, India and Nepal during winter season.

B. Ecesis

         The complete establishment of species in new habitat that was completely barren or left barren due to some catastrophe is known as Ecesion. This process is dependent upon the climatic, edaphic and biotic factors. The success of plant depend upon some of the adaptations to withstand the unfavorable conditions which includes both biotic and abiotic conditions.

Forexample

               The process of succession in xerosphere start on barren area from pioneer stage covered by crustose lichen, then foliose lichen followed by moss stage, herbaceous stage and a last by shrub stage.

C. Nudation

       The initiation of new species by major environmental disturbance such as volcano eruption is known as Nudation.

D. Reaction

            It represents the effect of established species on the habitat. Forexample plants alter habitat condition as they grow. They extract raw materials from the environment in large amounts and return metabolic wastes. The waste accumulates in large amounts and differ from the original raw materials, thus altering the environment.  

E. Competition

             The phenomenon which involves struggle for existence between two or more individuals growing in same area, that make excessive demand that are similar in nature on the soil is known as competition.

Such struggle may be in between same species or different species. The competition may be interspecific or intraspecific. Because of completion the weak individuals are eliminated as strong ones are retained.

 


8 0
2 years ago
Can someone help I don’t know
stellarik [79]

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8 0
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