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masya89 [10]
3 years ago
8

The auditory, or eustachian, tube extends from the nasopharynx to theA external ear.B middle ear.C inner ear.D oropharynx.

Biology
1 answer:
Nikolay [14]3 years ago
7 0

Answer:

Option B, Middle ear

Explanation:

Nasopharynx is the upper part of throat which lies behind the nose and it connects the to middle ear. It moves the mucus produced in the middle ear to the throat which is then further drained out.

This tube is responsible for equalizing the pressure inside the ear to the pressure outside the ear. It comprises upper throat and rear side of nasal cavity.

Hence, option B is correct

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Mutations in ubiquitin lead to malfunction of what organelle in ALS that leads to buildup of mis-folded proteins?
sergiy2304 [10]

Answer:

Mitochondria.

Explanation:

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder in which the neuron died due to mutation in superoxide dismutase 1 gene. This disease is also known as Lou Gehrig's disease.

Mitochondria structure is disorganized in ALS. The ubiquitin protein mutation leads to the malfunctioning of mitochondria and misfolded proteins are made in the mitochondria.

Thus, the correct answer is option (a).

8 0
3 years ago
Why does the american robin has the most species of birds?
BARSIC [14]

Answer:

"The American Robin is the largest, most abundant and broadly distributed thrush in North America. The presence of this songster in the backyard setting, together with its loud, musical voice, make it one of the most recognizable birds in North America. Indeed, the American Robin has been described as "America's favorite songbird" (Young 2012)".

Hope this helps :)

3 0
3 years ago
One of the reasons for this is that our unconscious handwriting incorporates into it different mental, physical, and mechanical
Liula [17]

Answer:

The correct answer is: True.

Explanation:

  • The writing of a person is controlled by an region located in the left part of frontal lobe of the brain which is known as the Broca's area.
  • Writing is a motor impulse send by the brain to the hand and fingers.
  • However, no two individual can have the same hand-writing.
  • This is because hand-writing is not only dependent on the brain to hand motor co-ordination.
  • It also depends upon the psychology, mentality, thought process, state of mind, nature of the person and also the influence of the surroundings on the person.
  • It also depends on the preference of the person to keep his writing artistic or simple or illegible.
  • All these factors can never match between two persons.
  • This is the reason, no two persons can share the exactly same hand-writing.
3 0
3 years ago
The caregiver of an infant keeps removing the pulse oximetry sensor claiming it is too tight and hurting her baby. which respons
zhuklara [117]
The nurse should try to find an oximetry sensor that is not so tight so that the baby will not feel discomfort and thus respond in that way to the caregiver's concerns and alleviate the problem by taking these appropriate measures.
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2 years ago
What Best describes the advantage of using the model of a food web?
KatRina [158]
The anwser would be 1
5 0
3 years ago
Read 2 more answers
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