What Anatomic Regions Are Considered Physiologic Dead Space

question 4

Multiple Choice

What anatomic regions are considered physiologic dead space?

• A) Respiratory bronchiole and unperfused alveoli
• B) Trachea and perfused alveoli
• C) Trachea and unperfused alveoli
• D) Trachea and mainstem bronchi

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Definitions:

Xylem

The tissue in plants that transports water and some nutrients from the roots to the leaves.

Bundle Scars

Marks left on the stem of a plant where vascular bundles or leaf traces have broken off or been removed.

Leaf Scar

Marks on a stem left when the petiole of a leaf breaks during abscission.

Guttation

The exudation of drops of water from the pores of plants, occurring when soil moisture levels are high, and root pressure forces water up through the plant vascular system.