The air pressure in the lungs can be increased by

A. increasing the volume of the lungs.
B. decreasing the volume of the lungs.
C. relaxing the diaphragm.
D. contracting the internal intercostals muscles.
E. Both relaxing the diaphragm and by decreasing the volume of the lungs.


Ans: B. decreasing the volume of the lungs.

Anatomy & Physiology

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Answer these questions about chromosome structure. What does "B" represent?

A. Chromatid B. Proteins C. Chromatin D. Chromosome E. Centromere

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Cell membranes are semipermeable

Indicate whether the statement is true or false

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Autorhythmicity in the heart is the responsibility of:

A) contractile cells. B) cardiac pacemaker cells. C) smooth muscle cells. D) skeletal muscle cells.

Anatomy & Physiology