In the term orthopnea, the combining form orth/o means:

A) straight.
B) difficult.
C) flow.
D) imperfect.


A
Explanation: A) Correct.
B) The suffix -pnea means difficult.
C) The suffix -rrhea means flow.
D) The combining form atel/o means imperfect.

Health & Biomechanics

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