Which Organ's Smooth Muscles Need to Contract in Order to Reduce

question 12

Multiple Choice

Which organ's smooth muscles need to contract in order to reduce air movement to the mammalian respiratory surfaces?

• A)those of the epiglottis
• B)those of the large bronchi
• C)those of the bronchioles
• D)those of the trachea

---

Definitions:

Break-even Point

The point at which total cost and total revenue are equal, meaning no net loss or gain, and one has "broken even".

Mixed Cost

A type of cost that contains both fixed and variable components and changes in total with the level of activity.

Rental Cost

The expense incurred for using a property, equipment, or other asset under a lease agreement for a specified period.

Machine Hour

A unit of measure representing the operation of a machine for one hour, often used in cost accounting to allocate expenses based on machine use.