What Are the Middle Three Layers (4-5-6) That an Oxygen

question 38

Multiple Choice

What are the middle three layers (4-5-6) that an oxygen molecule must cross when moving from the alveoli into the blood?

• A) interstitial space, basement membrane of the capillary endothelium, and the capillary endothelium.
• B) interstitial space, basement membrane of the capillary endothelium, and the capillary endothelium
• C) plasma of the capillary blood, the erythrocyte membrane, and the intracellular fluid in the erythrocyte
• D) the liquid lining the intra-alveolar membrane, alveolar epithelial cell, and the basement membrane of the alveolar epithelial cell.

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Definitions:

Levator Veli Palatine

A muscle in the oral cavity that elevates the soft palate during swallowing and speaking to prevent food from entering the nasal passages.

Soft Palate

The soft tissue constituting the back of the roof of the mouth, separating the mouth from the nasopharynx.

Middle Constrictor

A muscle that encircles the pharynx, responsible for constriction during swallowing to push food into the esophagus.

Hyoid Bone

A U-shaped bone in the neck that supports the tongue and is connected to muscles of the jaw, larynx, and pharynx.