What is the function of myelin in the nervous system?

Myelin increases the speed of action potential conduction by enabling saltatory conduction along axons.

Which hormone is released when blood glucose is low, and what does it do?

Glucagon, released by pancreatic alpha cells, stimulates glycogen breakdown and increases blood glucose.

What is the primary role of the lymphatic system in fluid balance?

It returns excess interstitial fluid to the bloodstream, preventing edema.

What is tidal volume (TV)?

The amount of air inhaled or exhaled during a normal quiet breath (~500 mL in adults).

How does surfactant improve lung function?

Surfactant reduces alveolar surface tension, preventing alveolar collapse and improving gas exchange.

What is the major driving force for glomerular filtration in the kidneys?

Hydrostatic pressure in the glomerular capillaries pushes plasma into Bowman’s capsule.

How does antidiuretic hormone (ADH) affect water balance?

ADH increases water reabsorption in the kidney’s collecting ducts, concentrating the urine and conserving body water.

Which part of the GI tract is responsible for most nutrient absorption?

The small intestine, especially the jejunum, via villi and microvilli that maximize surface area.

How do baroreceptors help regulate blood pressure?

They detect changes in arterial stretch and send signals to adjust heart rate and vessel diameter.

Why does carbon dioxide primarily travel as bicarbonate in the blood?

CO₂ reacts with water to form carbonic acid, which dissociates into bicarbonate, allowing efficient CO₂ transport.

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Davyd B.

Final

Question	Answer
What is the function of myelin in the nervous system?	Myelin increases the speed of action potential conduction by enabling saltatory conduction along axons.
Which hormone is released when blood glucose is low, and what does it do?	Glucagon, released by pancreatic alpha cells, stimulates glycogen breakdown and increases blood glucose.
What is the primary role of the lymphatic system in fluid balance?	It returns excess interstitial fluid to the bloodstream, preventing edema.
What is tidal volume (TV)?	The amount of air inhaled or exhaled during a normal quiet breath (~500 mL in adults).
How does surfactant improve lung function?	Surfactant reduces alveolar surface tension, preventing alveolar collapse and improving gas exchange.
What is the major driving force for glomerular filtration in the kidneys?	Hydrostatic pressure in the glomerular capillaries pushes plasma into Bowman’s capsule.
How does antidiuretic hormone (ADH) affect water balance?	ADH increases water reabsorption in the kidney’s collecting ducts, concentrating the urine and conserving body water.
Which part of the GI tract is responsible for most nutrient absorption?	The small intestine, especially the jejunum, via villi and microvilli that maximize surface area.
How do baroreceptors help regulate blood pressure?	They detect changes in arterial stretch and send signals to adjust heart rate and vessel diameter.
Why does carbon dioxide primarily travel as bicarbonate in the blood?	CO₂ reacts with water to form carbonic acid, which dissociates into bicarbonate, allowing efficient CO₂ transport.

Created by: user-1988187

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