Dmedicina. Semana 12. Respiratorio
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UNIVERSIDAD NACIONAL DEL SANTA
CENTRO PREUNIVERSITARIO
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SISTEMA RESPIRATORIO
UNIVERSIDAD NACIONAL DEL SANTA
CEPUNS
Chimbote - Perú
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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PORCION CONDUCTORA
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Seno maxilar Está presente desde el 4º mes de vida intrauterina. Sse abre a la nariz a nivel del meato medio. Seno frontal: Es posible identificarlo como unidad anatómica a partir de los 2 años de edad. Se abre en la nariz en el meato medio Laberinto etmoidal: El etmoides anterior formado por aquellas celdillas que desembocan en el meato medio, y etmoides posterior por aquellas que desembocan en el meato superior. Seno esfenoidal: Es el más posterior de los senos, se origina del etmoides posterior e invade el hueso esfenoidal a los 3 a 4 años. Su ostium de drenaje se encuentra en el meato superior
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DIVISIÓN DEL ÁRBOL BRONQUIAL
División Situación
Bronquios Bronquio Primario Bronquio Principal Extralobulillar
Bronquio Secundario Bronquio lobar
Bronquio terciario Bronquio segmentario
Bronquiolos Bronquiolo Primario Bronquiolo Intralobulillar
Bronquiolo Secundario Bronquiolo terminal
Bronquiolo terciario Bronquiolo respiratorio
Final de la Vía Respiratoria Conducto alveolar
Saco alveolar
Alveolo pulmonar
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Bronquios primarios Características
Derecho Izquierdo
Dirección Más vertical (30) Más horizontal (45)
Longitud Más corto (2,5 cm) Más largo (4,5 cm)
Calibre Mayor (1,5 cm) Menor (1,0 cm)
Ramificaciones lobulares 3 2
Ramificaciones segmentarias
10 8
CARACTERÍSTICAS DE LOS BRONQUIOS PRIMARIOS
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UNIDAD RESPIRATORIA: LOBULILLO RESPIRATORIO
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LOBULILLO PULMONAR
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PORCION RESPIRATORIA
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BRONQUIOLO RESPIRATORIO
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ALVEOLOS
Saco alveolar
Bronquiolo respiratorio
Capilares
Célula tipo II
Célula tipo I
Capilares Fibras elásticas
Macrófago
Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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MEMBRANA RESPIRATORIA
Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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Mecánica ventilatoria
La ventilación pulmonar es el movimiento de aire que mueven los pulmones La ventilación pulmonar depende de:
1. Volumen de aire que entra en cada inspiración 2. Frecuencia respiratoria
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Diafragma contraído
el volumen torácico aumenta
Inspiración: Entra aire
Diafragma relajado el volumen torácico
disminuye
Espiración: Sale aire
La inspiración siempre es un movimiento activo
La espiración en general es un movimiento pasivo
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LOS MÚSCULOS RESPIRATORIOS MODIFICAN EL VOLUMEN DE LA CAJA TORÁCICA
Músculos inspiratorios – Diafragma
– Intercostales externos, escalenos, esternocleidomastoideo
Músculos espiratorios – Intercostales internos
– Pared abdominal
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VOLÚMENES Y CAPACIDADES PULMONARES
5800
2800
2300
Volumen (ml)
1200
Volumen corriente (500 ml)
Final inspiración normal
Final espiración normal
Volumen residual (1200
ml)
Volumen de reserva espiratoria (1100 ml)
Volumen de reserva
inspiratoria (3000 ml)
Capacidad pulmonar total
Capacidad residual funcional
Capacidad vital 4600 ml
Capacidad inspiratoria
Tiempo
Autor: Deivi More Valladares - Médico Cirujano
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Autor: Deivi More Valladares - Médico Cirujano
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