Scenario Yawning Is a Reflexive Action That Is Often Associated with with Sleepiness

question 35

Multiple Choice

Scenario
Yawning is a reflexive action that is often associated with sleepiness. When a person yawns, the mouth opens, and a longer than normal breath of air is inhaled, followed by a longer than normal exhalation. Hypothesizing that yawning has a regulatory mechanism similar to breathing, scientists conducted an experiment on college students to test the effect of existing carbon dioxide levels on yawning.
-The scientists investigated carbon dioxide levels in their experiment because high carbon dioxide levels in the ________ signal control centers in the brain to increase rate and depth of inhalations and exhalations.

• A)alveoli
• B)blood
• C)heart muscle
• D)pharynx

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Definitions:

Budgeted Purchases

The anticipated expenditures on goods and materials a company plans to buy for a specific period.

Finished Goods Inventory

The completed products that are ready for sale but have not been sold yet.

Yarn

A long continuous length of interlocked fibers used in the production of textiles, knitting, crocheting, sewing, and weaving.

Beginning Finished Goods

The stock of completed goods ready for sale at the beginning of a financial period.