Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Answer:
Carbon dioxide goes with the concentration gradient across the cell membrane. It goes in the direction of the concentration gradient, from high concentration to low concentration.
Explanation:
undergoes simple diffusion, which is an example of passive transport. Passive transport diffusion goes with the concentration gradient, while on the other hand, active transport goes against the concentration gradient.
Going with the concentration gradient means that the molecules move from areas of high concentration to areas of low concentration. This is what carbon dioxide does.
Going against the concentration gradient means that the molecules move from areas of low concentration to areas of high concentration. This goes against the concentration gradient.
It typically slopes down from the base of a steeper retreating desert cliff, or escarpment, but may continue to exist after the mountain has eroded away. it is caused be erosion
Pharmacodynamics is what you think about when you consider how a medicine will affect the human body.
<h3>What can you say about pharmacodynamics?</h3>
The term "pharmacodynamics" describes the connection between drug concentration at the site of action and the effect that follows, including the progression and severity of therapeutic and unfavorable effects. The interaction of a drug with a receptor at the site of action determines the drug's impact.
<h3>What features of pharmacodynamics are there?</h3>
Pharmacodynamics: A General Overview Chemical Reactions Dose-Response Correlations Interactions between drugs and receptors
<h3>What is a pharmacodynamics example?</h3>
The simultaneous injection of an NSAID and phenprocoumon (an additive interaction) or aspirin and ibuprofen are examples of pharmacodynamic interactions (antagonistic interaction).
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