The Work of Breathing Normally Requires About 3% of Total

question 221

Multiple Choice

The work of breathing normally requires about 3% of total energy expenditure; this increases under all of the following situations except when

• A)elastic recoil decreases
• B)resistance increases
• C)the partial pressure of oxygen increases in the air
• D)ventilation increases
• E)compliance decreases

Realize the complexities involved in procurement and the selection of commodities or services based on their characteristics.

Understand the applications and limitations of statistical rules (Empirical Rule, Tchebysheff's Theorem) in describing data.

Differentiate between parameters and statistics in descriptive statistics.

Calculate and interpret the proportion of data within a specific range using the mean and standard deviation.

---

Definitions:

AChE

Acetylcholinesterase, an enzyme that breaks down acetylcholine, a neurotransmitter, in the synapse, terminating the signal between nerves.

Relaxation Phase

The phase in the cardiac cycle or muscle contraction where the muscle returns to its initial state of relaxation.

Sarcoplasmic Reticulum

A network of tubules and sacs in muscle cells that store and regulate calcium ions, crucial for muscle contraction.

Depolarization

A reduction in the difference in voltage across a cell's plasma membrane, which is fundamental in the propagation of nerve impulses.