Breathing air through the nose provides multiple functions. What function would be most impacted while breathing dry air?

A. Warming of the air
B. Delivering the air to the lungs
C. Providing a resonance chamber for speech
D. Humidifying the air


Answer: D. Humidifying the air

Anatomy & Physiology

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The partial pressure of oxygen in arterial blood is approximately ________ mm Hg.

A) 45 B) 100 C) 50 D) 40 E) 70

Anatomy & Physiology

The function of upper motor neurons is to

A.  directly excite skeletal muscle cells. B.  excite or inhibit skeletal muscle cells. C.  excite or inhibit lower motor neurons. D.  excite motor portions of the thalamus. E.  excite or inhibit motor portions of the cerebral cortex.

Anatomy & Physiology

If a muscle that acts on the hand also has both of its attachment points in the hand, it is considered a/an ________ muscle.

A. convergent B. antagonistic C. intrinsic D. extrinsic E. synergistic

Anatomy & Physiology

Which of the following parts of the nephron has two limbs with thick segments and thin segments?

A. proximal convoluted tubule B. nephron loop C. distal convoluted tubule `D. collecting system

Anatomy & Physiology