Which Event Occurs in the Lungs

question 19

Multiple Choice

Which event occurs in the lungs?

• A) Free H⁺binds to hemoglobin.
• B) Plasma HCO₃- enters erythrocytes.
• C) CO₂and H₂O are converted into HCO₃- and H⁺in the plasma.
• D) Carbonic anhydrase converts CO₂and H₂O into HCO₃- and H⁺in erythrocytes.
• E) CO₂binds to hemoglobin.

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Definitions:

Phospholipid

Lipid with phosphorus, resulting in a molecule with a polar end and a nonpolar end; main component of the lipid bilayer.

Apocrine

A type of gland that secretes substances by breaking off a part of the cell; found in the skin and eyelids.

Compound Acinar

A type of glandular structure in which secretory cells form sac-like acini connected to ducts, found in some exocrine glands such as the pancreas and salivary glands.

Branching Ducts

Part of the ductal system in various glands, branching off to increase the area of influence or secretion within an organ.