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pashok25 [27]
2 years ago
7

Tại sao chúng ta lại bị trụt rút

Biology
1 answer:
cestrela7 [59]2 years ago
3 0

Khi bạn quỳ lâu, đứng lâu sẽ gây ép lên các cơ bắp và mạch máu. Hoặc một tình trạng khác là khi ngủ bạn thường xuyên để cong chân, cơ bắp ở bắp chân khá ngắn, không được duỗi ra, duy trì tư thế này lâu, khi cử động nhẹ bạn sẽ bị chuột rút.

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In quiet breathing (A) inspiration is passive and expiration involves muscular contractions. (B) inspiration and expiration invo
Zolol [24]

Answer:

In quiet breathing inspiration involves muscular contractions and expiration is passive.

Explanation:

Respiration process involves two different stages, inspiration - inhalation- and expiration - exhalation-.

During inspiration, the diaphragm <u>contracts</u> and goes down, while intercostal muscles also <u>contract</u> and go up. These actions enhance the size of the thoracic box and <u>reduce internal pressure</u>. As a result, air flows in and fills the lungs.

During expiration, the <u>diaphragm relaxes</u> and the volume of the thoracic box diminishes, which causes the <u>pressure inside to increase</u>. In consequence, the lungs contract and the air is expulsed outside.  

8 0
3 years ago
Why do you think the distribution of fur traits changed over time?​
drek231 [11]

Answer now it is easier for animals to adapt

Explanation:

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3 years ago
Is work done when you carry a book across the room at a constant velocity
MArishka [77]

Image result for Is work done when you carry a book across the room at a constant velocity

Work is not done when you carry an object forward. You may have learnt that carrying an object and moving horizontally at a constant velocity has no work done. The truth is, there is a slight amount of work done due to overcoming air resistance in the horizontal direction.

5 0
3 years ago
Read 2 more answers
In bullous pemphigoid the blisters result from a separation between the
Viefleur [7K]

Answer:

C

Explanation:

In BP, an autoantibody binds to a component of the skin that holds the dermis and epidermis together, causing separation of these two layers, thus forming a blister.

Hope this helps!! Brainliest?? Anyways have a great day!! :))

5 0
3 years ago
The statement "the variety and number of
enyata [817]

Answer:

Biodiversity

Explanation:

refers to all the variety of life that can be found on Earth (plants, animals, fungi and micro-organisms) as well as to the communities that they form and the habitats in which they live.

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