Question

predict whether each condition would increase or decrease the delivery of oxygen to the tissues.
labels
bohr effect
decreased alveolar
po₂
decreased blood
ph
increased tissue
po₂
increased
hematocrit
left shift in the o₂-
hb dissociation
curve
drop zones
reset all
increased o₂ delivery
to tissues (1/2)
decreased o₂
delivery to tissues
(2/2)

Explanation:

• Bohr Effect: It causes hemoglobin to release more oxygen in tissues (increased \(O_2\) delivery).
• Decreased alveolar \(Po_2\): Reduces oxygen uptake in lungs, less oxygen to deliver (decreased \(O_2\) delivery).
• Decreased blood pH: Related to Bohr Effect (more \(H^+\) promotes \(O_2\) release, increased \(O_2\) delivery).
• Increased tissue \(Po_2\): Less gradient for \(O_2\) release (decreased \(O_2\) delivery).
• Increased hematocrit: More red - blood cells (more \(Hb\) to carry \(O_2\), increased \(O_2\) delivery).
• Left shift in the \(O_2 - Hb\) dissociation curve: Hemoglobin holds \(O_2\) more tightly (decreased \(O_2\) delivery).

Answer:

• Increased \(O_2\) Delivery to Tissues: Bohr Effect, Decreased blood pH, Increased hematocrit.
• Decreased \(O_2\) Delivery to Tissues: Decreased alveolar \(Po_2\), Increased tissue \(Po_2\), Left shift in the \(O_2 - Hb\) dissociation curve.