Systemic arterial $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ is greater than tissue $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ .

Question

Quizplus · Accepted Answer

Systemic arterial $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ (the partial pressure of oxygen in arterial blood leaving the heart) is typically higher than tissue $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ (the partial pressure of oxygen in the interstitial fluid surrounding cells). This gradient allows for oxygen to diffuse from the bloodstream into the tissues where it is needed for cellular respiration.

Systemic Arterial PO2\mathrm { P } _ { \mathrm { O } _ { 2 } }PO2​​

Systemic Arterial $\mathrm { P } _ { \mathrm { O } _ { 2 } }$