Topics: 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:
Germs & Diseases Musculoskeletal Diseases Health-Wellness-Illness EM Spectrum Blood & Blood Vessels Circulatory and Nervous System Immunisation Cholera Lipids -ology Shoulder Hospitality Virus Surgical & Complementary Terms Wellness & InfluencesOther quiz:
Pathology Endocrine › ViewAdult onset disease in female and cause masculinizationذكوره including facial hair and thicker jaw
A. Cushing’s syndrome
B. Hashimoto’s
Nervous System: Diseases/Problems/Illnesses › View
A stroke may cause
A. brain cells to die
B. paralysis
C. loss of normal functions
D. all of the above can be caused by a stroke