Which of these correctly ranks the normal pressure values in the atmosphere (atm), alveoli (alv), and intrapleural space (ip) when a person is resting at functional residual capacity (frc)?
patm = palv> pip
patm> palv> pip
patm < palv < pip
patm = palv = pip
patm = palv < píp

Correct answer is A

Explanation

This is because whenever the alveolar is at rest, it's pressure = 0 since it is measured in relation to the atmospheric P , therefore,  Patm =  Palv

However, When the intrapleural P at rest, it's pressure Pip < 0 i.e Negative

because of the competing forces on the intrapleural cavity

Patm= Palv>pip

Explanation:

The functional residual capacity is the volume of air that is in the lungs after an expiration. After an expiration there is still air in our lungs but as the atmosphere pressure (Patm) and the alveoli pressure (Palv) are balanced no air goes in or out, in order to expulse more air a forced expiration is needed where the Palv increases and  the Patm decreases. The pressure in the intrapleural space (Pip) is always negative, it will be higher than the alveoli pressure if there is a problem such as water or air in the intrapleural space.

i think the answer is g1

hope i

-lavira: )

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.