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Osmosis and Water Proportion in the Human Body

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Osmosis and Water Proportion in the Human Body

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Questions and Answers

What is the primary mechanism by which water moves through semi-permeable membranes?

Active transport

Simple diffusion

Facilitated diffusion

Osmosis (correct)

Which body part has the lowest proportion of water content?

Intracellular fluid

Teeth (correct)

Kidney

Brain

Which fluid compartment makes up 60% of total water in humans and has a stable volume?

Plasma in blood

Intracellular fluid (correct)

Cerebrospinal fluid

Extracellular fluid

What is the main function of the sodium-potassium pump in cells?

Balancing the cell for action potential Signup and view all the answers

What occurs during diuresis?

Production of excess urine Signup and view all the answers

In a dehydrated person, how does ADH production compare to that of a person with excess water?

ADH production increases Signup and view all the answers

What is the primary cause of hyponatremia?

Excessive water accumulation Signup and view all the answers

Which condition can cause hypokalemia?

Starvation Signup and view all the answers

What is the consequence of hyperkalemia on the nervous system?

Impaired nervous system function Signup and view all the answers

Which condition is associated with hypocalcemia?

Removal of thyroid gland Signup and view all the answers

What is the role of bicarbonate in the blood?

Maintaining acid-base balance as part of the buffer system Signup and view all the answers

How does the respiratory tract regulate pH when CO2 levels rise?

By reacting with water to create carbonic acid Signup and view all the answers