★ Circulation and Excretion Quiz
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
Select your answer:

Topics:
World Health Day Disease Cards Cardiovascular Physiology - Function Musculoskeletal/Endocrine Systems Bacteria & Viruses Pancreatitis Bones and Muscles Brain SCI CH2-1 Uses of Radioactive Radiation Hele Skeletal System Forensics: Blood Head and Neck Anatomy Ortho Infectious Disease ProteinsOther quiz:
Cardiology › ViewWhat is crucial for obtaining a clear and reliable ECG signal?
A. Amplifier Calibration
B. Lead Wiring
C. Electrode Placement
D. Sampling Rate
Nutrition › View
Where does most of the digestive process take place?
A. Small intestine
B. Stomach
C. Large intestine