Urban diseases and causes of mortality are more likely to be those spread by

During respiration, 3) Air enters the nostrils. 1) Air passes from the trachea to the bronchi. 4) Air diffuses from the alveoli to the blood cells. 2) Oxygen enters the blood cells. 5) Blood transports oxygen to other cells.

<h3>What is respiration?</h3>

During respiration process occurs gas interchange between the body and the environment.

There are two types of respiration,

1) External respiration involves two different stages, inspiration - inhalation- and expiration -exhalation-.

• During inspiration, the diaphragm and intercostal muscles contractions enhance the size of the thoracic box and reduce internal pressure. As a result, air flows in and fills the lungs.

• During expiration, the diaphragm relaxes, and the volume of the thoracic box diminishes, increasing the internal pressure and making the lungs contract, which results in air expulsion.

2) Internal respiration, during which blood and cells interchange oxygen and carbon dioxide.

Steps:

1) External respiration - Inhalation

Air passes from the environment to the lungs through the nose or mouth.

Oxygenated air moves

• From the nose or mouth to the pharynx.

• From the pharynx to the larynx.

• From the larynx to the trachea.

• From the trachea to the bronchia.

• From bronchia to bronchiole.

• Finally, from the bronchiole to alveoli.

Gas interchange with blood occurs in alveoli.

2) Internal respiration - Systemic circulation

The oxygenated blood moves from the lungs to the heart and the rest of the body.

Gases interchange occurs during this step. Cells take oxygen and release carbon dioxide.

Deoxygenated blood moves from tissues to the heart and from the heart to the lungs, releasing carbon dioxide there.

3) External respiration - Exhalation

Carbon dioxide is released by expiration.

Correct order of steps

3) Air enters the nostrils.

1) Air passes from the trachea to the bronchi.

4) Air diffuses from the alveoli to the blood cells.

2) Oxygen enters the blood cells.

5) Blood transports oxygen to other cells.

You can learn more about the respiration at

brainly.com/question/10862677

brainly.com/question/4190530

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<u>Complete question</u>

Place the steps of the respiration process in the correct order.

1) Air passes from the trachea to the bronchi.

2)Oxygen enters the blood cells.

3)Air enters the nostrils.

4)Air diffuses from the alveoli to the blood cells.

5)Blood transports oxygen to other cells.

7 0

8 months ago

Describe two integumentary system mechanisms that help regulate body temperature.

Basile [38]

Answer:

dilation of vessels and sweating

Explanation:

The vast blood supply of the skin aids in temperature regulation: dilated vessels enable heat to escape, while constricted vessels retain heat. The blood supply of the skin regulates body temperature. The skin aids in the maintenance of homeostasis. Humidity has an effect on thermoregulation because it reduces perspiration evaporation and, as a result, heat loss.

6 0

2 years ago

Your science teacher asks you to build a model of a cell. The model should look like a city, and buildings in the city should re

Mariulka [41]

Answer: The correct answer is B) city hall:control center.

As per the question, model of cell looks like a city where different buildings correspond to different organelles ( membrane bound subcellular compartments like nucleus, golgi complex, vacuole, endoplasmic reticulum).

Nucleus is a specialized membrane bound compartment that possesses the genetic material ( DNA) of the Eukaryotes ( like plants and animals).

Nucleus controls all the essential activities of the cell by regulating the expression of gene ( segment of DNA corresponding to a particular protein).

Therefore, in the model of cell, city hall;control center represents the nucleus of the cell.

5 0

2 years ago

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