Figure 7- 1 Floor of the Cranial Cavity

question 71

Multiple Choice

Figure 7- 1 Floor of the Cranial Cavity
Use Figure 7- 1 to answer the following questions:
-If there were no paranasal sinuses, all of the following would be true, except

• A) the skull would be heavier.
• B) the ability to sneeze would be impaired.
• C) stronger neck muscles would be required.
• D) less mucus in the nasal cavity.
• E) reduced ability to trap dust and particles.

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Definitions:

Countercurrent Mechanism

A process by which fluids flow in opposite directions in adjacent tubes, exchanging properties (such as heat or concentration) to facilitate efficient transfer.

Uric Acid

A waste product formed from the breakdown of purines, excreted in urine.

Kidney Size

Refers to the physical dimensions of the kidneys, which can vary due to factors such as age, sex, body size, and health conditions.

Blood Flow

The movement of blood through the circulatory system, delivering oxygen and nutrients to tissues and removing carbon dioxide and other wastes.