The membrane potential of rod and cone cells is around:
A. -70 mV in the dark, and the cells depolarize in the light.
B. -70 mV in the dark, and the cells hyperpolarize in the light.
C. -35 mV in the dark, and the cells hyperpolarize in the light.
D. -35 mV in the dark, and the cells depolarize in the light.
C
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Obstruction of the ________ will cause a more severe myocardial infarction (MI) than the obstruction of any of the others.
A. left marginal vein B. left coronary artery (LCA) C. circumflex branch D. posterior interventricular vein E. anterior interventricular branch
Which structure is filled with vitreous humor?
A) Posterior cavity B) Inner neural layer C) Anterior cavity D) Middle vascular layer
The embryonic heart actually begins working before its development is complete.
Answer the following statement true (T) or false (F)
Type AB has no antigens
Indicate whether the statement is true or false.