What percentage of carbon dioxide carried in blood is dissolved in plasma?Multiple Choice0%1%5%7%10%

Breakdown the Problem

To find the percentage of carbon dioxide (CO₂) that is carried in the blood and is dissolved in plasma, we need to identify the common knowledge regarding the transport of CO₂ in the human body.

Relevant Concepts

Carbon dioxide in blood is transported in three main forms:

1. Dissolved in plasma
2. As bicarbonate ions (HCO₃⁻)
3. Bound to hemoglobin as carbamino compounds

Typically, about 5-10% of CO₂ is carried dissolved in the plasma.

Analysis and Detail

According to physiological data:

• It's known that around 5% to 7% of the carbon dioxide in the bloodstream is transported in dissolved form. This means that the correct option must fit within this range based on the answer choices provided.

Verify and Summarize

Reviewing the options:

• 0%: Incorrect as CO₂ is indeed dissolved in the plasma.
• 1%: Too low considering physiological data.
• 5%: Valid, as this is within the range typically noted.
• 7%: Also valid and commonly cited in some sources.
• 10%: Slightly higher than expected dissolution proportions.

Final Answer

Given the general physiological understanding, the best answer is 7%.