Perfusion

Bronchial Circulation
 * Red Infarcts

Pulmonary Circulation

Changes in Pulmonary Blood Flow Recruitment Distention


 * Active Causes
 * Cause || Effect on Resistance || Explanation
 * Cause || Effect on Resistance || Explanation


 * Increased Sympathetic Activation||increases||a-adrenergic receptors in vascular tissue
 * Increased Parasympathetic Tone||decreases|| muscarinic receptors in pulmonary arteries
 * PGF2a, PGE2||Increase||Pulmonary Vasoconstricor
 * Angiotensin||Increase||Pulmonary Vasoconstrictor
 * Histamine||Increase||Pulmonary venoconstrictor
 * Alveolar Hypoxia||Increase
 * Alveolar Hypercapnia||Increase
 * Low pH of venous blood||Increase
 * PGE1||Decrease||Pulmonary vasodilator
 * Prostacyclin (PGI2)||Decrease||Pulmonary vasodilator
 * Nitric Oxide||Decrease||NO receptors in vascular smooth muscle
 * Bradykinin||Decrease
 * }
 * Alveolar Hypercapnia||Increase
 * Low pH of venous blood||Increase
 * PGE1||Decrease||Pulmonary vasodilator
 * Prostacyclin (PGI2)||Decrease||Pulmonary vasodilator
 * Nitric Oxide||Decrease||NO receptors in vascular smooth muscle
 * Bradykinin||Decrease
 * }
 * Nitric Oxide||Decrease||NO receptors in vascular smooth muscle
 * Bradykinin||Decrease
 * }
 * Bradykinin||Decrease
 * }

Regional Distribution of Pulmonary Bloodflow

Hypoxic Pulmonary Vasoconstriction

Pulmonary Edema