Answer:
I say the correct answer is the 3rd one.
Explanation:
Answer is number 3
Answer:
c. tinnitus
Explanation:
Tinnitus (a hearing impairment) is a form of hearing of sound when no external sound is present Which is often described as a Ringing,Tinnitus may also sound like a clicking or roaring. i.e usually unclear voices or music are heard. The sound may be soft or loud, low or high pitched, and appear to be coming from one or both ears. Ranging from one person to another, the sound may causes depression or anxiety and can interfere with concentration.
Otitis externa is a condition that causes inflammation , the inflammation also covers (redness and swelling) of the external ear canal, i.e the tube between the outer ear and eardrum.
Meniere's disease popularly called (MD), is a disorder of the inner ear that is characterized by episodes of feeling like the world is spinning (vertigo), hearing loss, and a fullness in the ear. The cause of MD involves both genetic and environmental factors. Some of the factors include constrictions in blood vessels, viral infections, and autoimmune reactions.
Otosclerosis is a condition where one or more foci of irregularly laid spongy bone replace part of normally dense enchondral layer of bony otic capsule in the bony labyrinth. This condition affects one of the ossicles (the stapes) resulting in hearing loss, vertigo or a combination of symptoms.
Therefore from the foregoing we can conclude that Tinnitus is the correct anwser.
Answer:
Migration
Explanation:
Migration refers to the movement from one region to another
Neuronal Migration refers to the movement of the neurons from their origin (brain center) to their final positions.
Example Neuron 4591 migrated to the part of brain that con trols logic whereas Neuron 4592 migrated to the region of the brain that controls emotions.
The migration can be radial or tangential.
Using a slow- and fast-growing variant of bamboo, Wei and colleagues looked at cell division, growth, and gene expression (through transcriptomics, which measures all the genes being expressed by an individual) to discover which genes may be responsible for fast growth in bamboo. They found that the slow-growing variant had reduced expression of genes relating to cell wall construction, the plant hormone auxin (important for cell growth and cell division), and had irregular cell growth and cell walls. Wei and colleagues suggest that a reduced ability to produce and perceive auxin, combined with a weakened cell wall, are responsible for the slow growth seen in the bamboo variant.
