anatomy and physiology mcqs

Question #300

Renal blood flow:

Renal blood flow accounts for around 30% of cardiac output, though this increases in the event of volume depletion as blood is preferentially diverted towards the kidneys.

By Darcy's law, renal blood flow increases in response to dilatation of any vessel along its path.

Renal blood flow is kept relatively constant over the physiological range of blood pressures: this mechanism is termed renal autoregulation and comprises tubuloglomerular feedback and myogenic mechanisms.

See A Thinking Approach to Physiology, pages 147 - 148.

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