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olchik [2.2K]
3 years ago
5

How do you descrive the tympanic membrane?

Biology
1 answer:
kondaur [170]3 years ago
7 0

Answer:

Tym-panic membrane, also known as eardrum, is a thin layer of tissue in the human ear that absorbs sound waves from the external environment and transfer them to the small bones in the cavity of the tym-panic (middle-brain)  called auditory ossicles.

The membrane located over the outer canal end .The edges are fixed into a bone ring.

The drum membrane made up of three layers including outer layer,inner layer and a layer of radial and circular fibres between the outer and inner membrane.

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A research team finds that an experimental drug causes problems for prenatal development, but only if it is given within the fir
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Answer:

a. heart development.

Explanation:

As the third week of fetal development starts, the process of formation of blood vessels begins. Also, the splanchnic mesoderm in the head end of the embryo forms heart on days 18 and 19. Since it develops heart, this part of the mesodermal cells is called the cardiogenic area. The underlying endoderm sends the induction signals to these mesodermal cells to form a pair of endocardial tubes that gradually develop into a single primitive heart tube.

This primitive heart begins to beat by the end of the third week of development. Therefore, any drug that affects fetal development during the first 20 days of the pregnancy might affect the development of the heart.

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2 years ago
College fibers give bone their?
elixir [45]

The answer is A. Hardness

8 0
3 years ago
A fertilized egg undergoes several stages before it is successfully implanted. The
zloy xaker [14]

Answer:

it is implanted in the tissue of uterus.

Explanation:

the egg cell is usually fertilized in the oviduct and then sweeped out or moved out of the oviduct by cilia or peristaltic movements in the oviduct to the uterus. when it is moved to the uterus it is imolanted in the tissues there. give me a brainliest if i helped!♡

7 0
3 years ago
Which of the following is not a symptom of influenza?
aleksandr82 [10.1K]

Answer:Diarrhea

Explanation:

Influenza is a type of viral infection. It is commonly described as flu. Its symptoms are usually worse than normal cold.

Most of the symptoms of  flu are not observed during the starting few days and one may transfer it to another person before knowing about it.

The main symptoms of flu includes headache, dry cough, muscular aches. It does not includes diarrhea.

6 0
3 years ago
What is the role of a spinal cord in a human body​
AysviL [449]

Answer:

To transport signals to the rest of the body and to keep the body upright.

Explanation:

To protect the nerves and keep the body upright. This is because if your spine is broken, then you become paralysed therefore it's an extremely important aspect for the body.

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