Select your answer:
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Nutrition PHE Lungs Pathogens Physiothearpy in Neurology Alzheimer Disease and Dementia Human Physiology Vision and Light Respiratory Acidosis Neuron Structure Physical Pharmacy Oral Surgery Pancreas Skin Fish Health ManagementOther quiz:
Human Body Systems › ViewWhich system detects information from the environment and directs the way your body responds to this information?
A. excretory
B. circulatory
C. respiratory
D. nervous
Circulation and Excretion › View
Water across the gills of fish and the blood in the gills does in opposite direction enhancing the diffusion of oxygen from the water into the blood. What is this flow in the opposite direction called?
A. undirectional flow
B. countercurrent exchange
C. atriventricular exchange