Atrial Natriuretic Peptide (ANP) is a hormone released by the cardiac atria in response to stretching caused by increased blood volume and pressure. Its primary effect is to reduce blood volume and pressure. ANP acts on the kidneys to increase the excretion of sodium (natriuresis) and water (diuresis), thereby decreasing blood volume. It also causes vasodilation, which lowers peripheral resistance. Furthermore, ANP inhibits the Renin-Angiotensin-Aldosterone System (RAAS) by suppressing renin, aldosterone, and vasopressin (ADH) secretion—all hormones that would otherwise increase blood volume and pressure. ANP's actions are antagonistic to those of aldosterone and ADH, providing a crucial counter-regulatory mechanism to prevent volume overload and hypertension.

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Zambia

• Naomi Miselo – 31 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies