Question

Blood in the pulmonary artery....

1) Hb is 100
2) Hb is 75
3) Hb is 100
4) Hb is 40
5) Hb is 75
6) Hb is 40

Answer 1

Blood in the pulmonary artery is deoxygenated. Hemoglobin (Hb) carries oxygen in red blood cells (RBCs). In the lungs, oxygen diffuses from the alveoli and binds to hemoglobin.

Step-by-step explanation:

Blood in the pulmonary artery is deoxygenated. Hemoglobin (Hb) is the respiratory pigment found in red blood cells (RBCs) that carries oxygen. In the lungs, oxygen diffuses from the alveoli into the capillaries surrounding the alveoli. Oxygen binds to hemoglobin, and oxygenated arterial blood is bright red.