★ Nervous System and Special Senses Quiz
An action potential:
A. is essential for nerve impulse propagation
B. involves the influx of negative ions to depolarize the membrane
C. involves the outflux of negative ions to depolarize the membrane
D. involves the outflux of positive ions to depolarize the membrane
Select your answer:
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Cells and Organ Systems Energy and Metabolism Environmental Biotechnology Mitosis for Mya Human Brain Macro and Micro Nutrients Surgical Vocabulary Blood Groups Properties of the Hair Dermis Virus, Bacteria, Immunity Musculoskeletal System Responses to Exercises Joints Introduction to Histology History of PsychologyOther quiz:
Respiratory System › ViewFlap of tissue that covers the opening to the windpipe during swallowing
A. Pharynx
B. Trachea
C. Epiglottis
Sensory System Anatomy and Pathology › View
Which of the following pathological conditions is due to an opaque or cloudy lens?
A. astigmatism
B. cataract
C. glaucoma
D. strabismus