JUST NEED LAST PART Oxygenated hemoglobin absorbs weakly in the red (hence its r

Question

JUST NEED LAST PART

Oxygenated hemoglobin absorbs weakly in the red (hence its red color) and strongly in the near infrared, whereas deoxygenated hemoglobin has the opposite absorption. This fact is used in a "pulse oximeter" to measure oxygen saturation in arterial blood. The device clips onto the end of a person's finger and has two light-emitting diodes --a red (665 nm) and an infrared (905 nm)-- and a photocell that detects the amount of light transmitted through the finger at each wavelength.

Explanation / Answer

a)INFRARED-(430 THz

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