Video Experimental Relacionado

Updated: Jul 9, 2026

Bladder Smooth Muscle Strip Contractility as a Method to Evaluate Lower Urinary Tract Pharmacology

Bladder Smooth Muscle Strip Contractility as a Method to Evaluate Lower Urinary Tract Pharmacology

Published on: August 18, 2014

Óxido nítrico: un mediador fisiológico de la erección del pene

A L Burnett¹, C J Lowenstein, D S Bredt

¹Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD 21205.

Science (New York, N.Y.)

|July 17, 1992

Resumen

El óxido nítrico (NO) es un actor clave en la función eréctil. La inhibición de su producción en los nervios del pene bloquea las erecciones, confirmando NO NO.

Área de la Ciencia:

Fisiología Fisiología Fisiología.
La neurociencia es la neurociencia.
Urología Urología Urología.

Sus antecedentes:

El óxido nítrico (NO) tiene diversas funciones, incluyendo la señalización neuronal y la vasodilatación.
El papel del NO en la función eréctil del pene no estaba claro hasta ahora.

Objetivo del estudio:

Investigar el papel del óxido nítrico (NO) como mediador fisiológico de la función eréctil.

Principales métodos:

Enzima NO sintasa localizada en las neuronas del pene de la rata y las arterias del pene.
Se administraron inhibidores de la NO sintasa para evaluar su efecto sobre las erecciones.

Principales resultados:

NO se encontró sintasa en las neuronas del pene y en los plexos arteriales.
Las pequeñas dosis de inhibidores de la NO sintasa inhiben significativamente las erecciones inducidas electrofisiológicamente.

Conclusiones:

El óxido nítrico (NO) se ha establecido como un mediador fisiológico de la función eréctil.
NO juega un papel crucial en los mecanismos subyacentes a la erección del pene.

Más Videos Relacionados

Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction

Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction

Published on: August 17, 2022

Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension

Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension

Published on: June 6, 2025

Videos de Conceptos Relacionados

Gas Exchange and Transport

Gas Exchange and Transport

Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.

Physiological Control of Respiration

Physiological Control of Respiration

Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...

Respiration and Gaseous Exchange

Respiration and Gaseous Exchange

The intricate interplay between the cardiovascular and respiratory systems is crucial for efficiently transporting respiratory gases throughout the body. Let us explore the cardiovascular system's multifaceted functions, emphasizing its pivotal role in gas exchange.
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves the...

Oxygen Transport in the Blood

Oxygen Transport in the Blood

Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...

Chemical Factors Affecting Respiration Centers

Chemical Factors Affecting Respiration Centers

Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated. Under...

Oxygenic Photosynthesis

Oxygenic Photosynthesis

Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate light...