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fomenos
3 years ago
7

During inhalation, air continues to move into the lungs until:_____

Biology
2 answers:
melamori03 [73]3 years ago
7 0

Answer:

(B) the internal pressure is less than atmospheric pressure.

Explanation:

The process of respiration is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation). During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.

Hence, as the thoracic cavity increases in volume the lungs are pulled from all sides to expand, causing a drop in the pressure (a partial vacuum) within the lung itself.  As such the internal pressure is less than atmospheric pressure.

During expiration, diaphragm contracts inferiorly and thoracic muscles pull the chest wall outwardly (the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases). As a result, the lungs contract and air is forced out.

jeka57 [31]3 years ago
6 0

Answer:

A) the internal pressure is the same is atmospheric pressure.

Explanation:

Air continues to move into the lungs until the intrapulmonary/internal pressure is the same as atmospheric pressure

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During photosynthesis, specific pigments absorb light energy, which is then used to fuel the building of sugar molecules. Which
Andreas93 [3]

Answer:

Chlorophyll a- violet blue

Chlorophyll b - orange red

Carotenoids- green yellow

Explanation:

The three major plant pigments are chlorophyll a, chlorophyll b and carotenoids.

Various pigments are identified by their specific pattern of wavelength absorption in the spectrum of visible light. Chlorophyll a absorbs light in the violet-blue region, while chlorophyll b absorbs orange-red light. Chlorophyll a and b reflects or transmits green light hence they appear green. Carotenoids absorb light in the green - yellow region hence they reflect longer yellow, red, and orange light.

5 0
3 years ago
15
s344n2d4d5 [400]

OPTIONS:

a. When there are just two other people at the party.

b. When everyone is wearing a nametag.

c. When there are more than 50 people attending the same party.

d. When the need for help from the person who is having a heart attack is very clear

Answer:

c. When there are more than 50 people attending the same party.

Explanation:

Bystander effect is a term used in social psychology to describe the tendency of an individual to intervene in the event of an emergency to offer help to the person needing it, when others are present at the scene of the emergency.

In the case of an emergency just like the scenario stated in the question, where someone develops a heart attack at a dance party, if the party has more people, the slimmer the chance of the person getting help from any of the 50 people at the party, as the presence of others would tend to discourage the any individual from attempting to help the victim having the heart attack.

The situation that would more likely show the bystander intervention effect is <em>"c. When there are more than 50 people attending the same party."</em>

5 0
3 years ago
In a DNA molecule, T pairs with _______.<br> a. A<br> b. C<br> c. G
I am Lyosha [343]
T pairs with A ( answer a.).

Hope this helps !

Photon
3 0
3 years ago
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Answer:

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Explanation:

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2 years ago
Food web stabitlity is most dependent on ____?
Harlamova29_29 [7]

Food web stability is most dependent on the number of connections among species.

5 0
3 years ago
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