Select your answer:
Topics:
Understanding Psychology Nervous System Protozoan Diseases Cell Injury Immunity & Cancer Microorganism - Diseases Thyroid Gland Hospital Departments Health Systems Balanced Diet Anatomy of the Eye Dementia Nutritional Trivia Cell Psychiatry Muscular System MovementsOther quiz:
Muscular System Movements › ViewRaising head away from chest is an example of?
A. flexion
B. extension
C. abduction
D. adduction
Respiratory System › View
Which part of the human respiratory system is a thin, moist membranous structure where gas exchange occurs?
A. trachea
B. bronchus
C. epiglottis
D. alveolus