2º Secundaria CyT
- Las arterias vs. las venas, ¿cuál es la diferencia?
- El sistema circulatorio y el corazón
- El flujo a través del corazón
- ¡Conoce al corazón!
- Dos circulaciones en el cuerpo
- Lub dub
- Componentes de la sangre
- Glóbulos rojos
- Repaso del sistema circulatorio
- Cuestionario introductorio sobre el sistema circulatorio
- ¿Por qué necesitamos un sistema linfático?
¿Quieres unirte a la conversación?
- and we'll use those valves to kind of talk through where those sounds are coming from. so let's start by labeling our heart. so we've got at the top, blood is coming into the right atrium and going to the right ventricle it goes off to the lungs, comes back in to the left atrium and the left ventricle. So these are the chambers of your heart. Now keep your eye on the valves. And we'll actually tall about them as the blood moves through. So let's start with blood going from the right atrium this way into the right ventricle. Now, at the same moment that blood is actually going from the right atrium to the right ventricle, blood is actually also going from the left atrium to the left ventricle. Now, you might think, well, how's that possible? how can blood be in two places at one time? but now remember that blood is constantly moving through the heart. So in a previous cycle, you actually had some blood that was coming back from the lungs, ans that's what's dumping into the left ventricle. and in now cycle, you have a bit of blood that's going from the right atrium to the right ventricle. so you have simultaneously two chambers that are full of blood the right and left ventricle. the valves had to open. And specifically, let's labell all the valves now. so here you have our tricuspid valve, and i'm going to label thas as just a T. and then up here you have the pulmonary valve, and this'll be just a P.(2 votos)
- ¿porque el corazon es la bomba funcional del ser humano?(1 voto)
- por que expulsa la sangre que necesitamos, sin el seria imposible que podamos vivir(1 voto)