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Physiology › View

The rising phase of the action potential in the pacemaker cells occurs in response to:

A. activation of long-lasting, voltage-gated Ca2+ channels

B. activation of voltage-gated Na+ channels

C. activation of voltage-gated Cl channels

D. activation of transient Ca2+ channels

E. activation of voltage-gated K+ channels

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Renal and Gastrointestinal System › View

The filtering unit of the kidneys?

A. Renin

B. Nephrons

C. Ions

D. Loop of Henly

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