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arterias do coração com rascunho

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ARTERIA AORTA
 Principal arteria del cuerpo.
 Distribuye la sangre a todo el 
organismo.
ORIGEN:
 A la derecha y detrás del 
tronco pulmonar
 Su origen está marcado por 
las valvas semilunares y 
senos aórticos de Valsalva. 
Ventrículo izquierdo
Aorta
Valvas semilunares 
 
 
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Slide 3 
 
3
El origen de la aorta 
está situado:
 Detrás, debajo y a la 
derecha del orificio 
del tronco pulmonar
 Delante y a la 
derecha del orificio 
auriculoventricular 
izquierdo y en el 
mismo plano que éste
TC 
P
M
Ao 
 
 
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TRAYECTO: Nace en el tórax y termina en el abdomen. 
 Asciende oblicua adelante, 
arriba y a la derecha 
(porción ascendente)
 Se curva hacia la izquierda y 
atrás describiendo un arco de 
concavidad inferior (arco aórtico)
 Alcanza la VT4 y desciende 
verticalmente delante de la columna 
vertebral (porción torácica)
 Atraviesa el diafragma y 
llega al abdomen donde 
termina (porción abdominal)
Ao ascendente
Arco aórtico
Ao torácica
Ao abdominal
 
 
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TERMINACIÓN:
 La bifurcación de la 
aorta se encuentra a 
nivel de la VL4 o el 
disco L4 – L5 (a la 
izquierda de la línea 
media)
 Termina por 
bifurcación en dos 
arterias ilíacas 
comunes (derecha e 
izquierda)
Ao abdominal
Arteria ilíaca 
común derecha Arteria ilíaca 
común izquierda
VCI
 
 
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6
Entre la salida de la arteria 
subclavia izquierda y el 
ligamento arterioso presenta 
un estrechamiento: istmo 
aórtico
En su origen, la aorta 
presenta una dilatación: 
bulbo aórtico
Bulbo aórtico
Istmo aórtico
 
 
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7
 Aorta ascendente
 Arco aórtico 
(cayado)
 Aorta descendente 
(porción torácica y 
porción abdominal)
SEGMENTOS:
 
 
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AORTA ASCENDENTE
 Es totalmente intrapericárdica
 Originalas dos arterias coronarias
 Constituye la pared anterior del 
seno transverso de Theile
A la derecha se relaciona con: 
 VCS
 Borde superior de la orejuela 
derecha
 Limita el orificio derecho del 
seno transverso
A la izquierda se relaciona con: 
 Tronco pulmonar
VCS
TPAorta
Orejuela 
derecha
 
 
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9
ARCO AÓRTICO CAYADO DE LA AORTA
Se dirige atrás y a la izquierda
 Curvatura principal: 
concavidad inferior, por 
encima de la raíz pulmonar 
izquierda
 Curvatura accesoria: 
concavidad derecha, sobre 
la tráquea y el esófago
Describe una curva de 
doble concavidad:
 
 
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RELACIONES:
VCS
A la derecha
Tráquea
Esófago
NLRI
Atrás y a la derecha se relaciona con:
También se relaciona con:
 Conducto torácico
 Nervios cardíacos posteriores
 
 
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11
RELACIONES: Adelante y a la izquierda se relaciona con:
Nervio vago izquierdo
Nervio frénico izquierdo y 
vasos pericardiofrénicos
También se relaciona con:
 Nervios cardíacos anteriores
 Pleura mediastínica
 
 
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12
RELACIONES: Abajo se relaciona con:
Raíz pulmonar izquierda
Ligamento arterioso
NLRI
 
 
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Cuadrilátero de 
Wrisberg
 Arco aórtico
 Ligamento 
arterioso
 Arteria pulmonar 
derecha
Contiene al ganglio 
cardíaco superior 
de WrisbergArteria 
pulmonar 
derecha
Ligamento 
arterioso
Arco aórtico
13
 
 
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RAMAS DEL ARCO AÓRTICO: 3 ramas
Tronco arterial 
braquiocefálico
Arteria carótida 
primitiva izquierda
Arteria subclavia 
izquierda
ARCO AÓRTICO(+ voluminosa)
 
 
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Cuadrilátero de 
Bourgery
 Arco aórtico
 CPI
 SI
 VBCI
Contiene al nervio 
vago izquierdo
CPI
SI
Arco aórtico
VBCI
15
 
 
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AORTA TORÁCICA
2 segmentos:
Desde la VT4 hasta el diafragma
 Superior o 
laterovertebral
 Inferior o 
prevertebral
Superior 
(laterovertebral)
Inferior 
(prevertebral)
 
 
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17
Segmento superior 
(laterovertebral)
Adelante: 
Raíz pulmonar izquierda
Pericardio
Nervio vago izquierdo
Atrás: 
Cadena simpática
VHAA
 
 
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18
Segmento superior 
(laterovertebral)
A la derecha: 
A la izquierda: 
Esófago
Conducto torácico
Pleura mediastínica
 
 
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19
Segmento inferior 
(prevertebral)
En el centro del mediastino posterior
Adelante: 
Pericardio
Esófago
Atrás: 
Conducto torácico
 
 
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20
Segmento inferior 
(prevertebral)
A la derecha: 
VHA
Vena ácigos
A la izquierda: 
Cadena simpática
 
 
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21
RAMAS COLATERALES:
 Ramas mediastínicas
 Arterias intercostales 
posteriores (9 últimas)
 Ramas esofágicas medias
 Ramas bronquiales
 Ramas pericárdicas
“ME INTERESAN ESOS 
BRONQUIOS PERIFERICOS”
 
 
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TRONCO ARTERIAL BRAQUIOCEFÁLICO
ORIGEN: Arco aórtico 
Delante de tráquea 
TRAYECTO:
 Se dirige arriba, a la 
derecha y algo atrás
TERMINACIÓN:
 Detrás de articulación 
esternoclavicular derecha
 Por bifurcación en 2 ramas:
 Carótida primitiva derecha 
(anterior y medial)
 Subclavia derecha 
(posterior y lateral)
TBC
CPD
SD
3 cm
 
 
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23
RELACIONES:
VBCD
VBCI
CPI
TráqueaNervio vago derecho
Atrás Atrás
Adelante
A la izquierda
A la derecha
NO DA RAMAS COLATERALES.
Puede originar a la arteria tiroidea ima y a la arteria tímica.
 
 
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24
CARÓTIDA PRIMITIVA IZQUIERDA
CARÓTIDA COMÚN IZQUIERDA
ORIGEN:
TRAYECTO:
TERMINACIÓN:
Arco aórtico 
 Borde superior del cartílago tiroides 
(borde inferior de la VC4)
 Por bifurcación en 2 ramas:
En el cuello
 Arteria carótida interna
 Arteria carótida externa
 Torácico
 Cervical 
CPI
 
 
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25
RELACIONES INTRATORÁCICAS:
Arteria subclavia izquierda
NLRI
Nervio vago izquierdo
Tráquea A la derecha
Atrás
Atrás
Atrás
TBC
Adelante
 
 
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26
RELACIONES INTRATORÁCICAS:
Nervio frénico 
izquierdo
VBCI Adelante
A la izquierda
NO DA RAMAS COLATERALES.
 
 
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ARTERIA SUBCLAVIA IZQUIERDA
ORIGEN:
TRAYECTO:
TERMINACIÓN:
Arco aórtico 
 Torácico
 Cervical 
SI
 Debajo de la parte media de la 
clavícula (borde lateral de la 1ª 
costilla)
 Se continúa como arteria axilar
 
 
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28
RELACIONES INTRATORÁCICAS:
Nervio vago izquierdo
CPI
Conducto torácico
Esófago
NLRI
Pleura mediastínica
Adelante
Adelante
Atrás
A la izquierda
A la derecha
A la derecha
 
 
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RAMAS COLATERALES:
 Arteria vertebral
 Arteria torácica interna 
(mamaria interna)
 Tronco tirocervical
 Tronco costocervical
Arteria torácica interna 
SISD
 
 
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ARTERIA TORÁCICA INTERNA
ORIGEN:
TRAYECTO:
TERMINACIÓN:
Arteria subclavia 
 Penetra en tórax detrás del CC1 Desciende paralela al borde lateral 
del esternón (a 1,5 cm).
 Pasa delante del músculo transverso 
del tórax
 Está acompañada por 2 venas 
torácicas internas
 A nivel del 6º espacio intercostal
 Por bifurcación en 2 ramas:
 arteria epigástrica superior 
(rama abdominal)
 arteria musculofrénica 
(toracofrénica)
 
 
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31
RAMAS COLATERALES:
 Ramas mediastínicas
 Ramas tímicas
 Ramas esternales
 Arteria pericardiofrénica 
(diafragmática superior)
 6 primeras arterias 
intercostales anteriores 
Acompaña al 
nervio frénico
Arteria 
pericardiofrénica 
 
 
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32
Arteria epigástrica superior 
 Atraviesa el triángulo 
esternocostal del diafragma 
(∆ de Larrey)
 Llega al abdomen donde se 
une con la arteria 
epigástrica inferior a nivel 
del ombligo
Arteria musculofrénica
 Sigue las inserciones del 
diafragma
 Origina las 6 últimas 
arterias intercostales 
anteriores
 
 
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33
ARTERIAS INTERCOSTALES
Anteriores:
 6 primeras: torácica 
interna
 6 últimas: 
musculofrénica
Posteriores:
 3 primeras: arteria 
intercostal suprema
 9 últimas: aorta torácica
(del tronco costocervical de la subclavia) Las arterias intercostales 
posteriores son los elementos más 
posteriores del mediastino.
 
 
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34
Arteria torácica interna
Aorta torácica
Arteria intercostal 
posterior
Arteria intercostal 
anterior
 
 
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35
Casos particulares:
 3ª arteria intercostal posterior 
derecha: origina a la arteria 
bronquial derecha 
 4 últimas: irrigan a los músculos 
anchos del abdomen
 Uno de las últimas puede 
originar la arteria medular 
segmentaria de Adamkiewicz
 A partir de la 5ª por delante y 
la 8ª por detrás irrigan al 
diafragma
 Arteria subcostal: es la última 
intercostal posterior
Tronco broncointercostal
3ª intercostal 
posterior derecha
Arteria bronquial 
derecha
 
 
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36
Relaciones con los músculos intercostales:
Delante del músculo 
intercostal externo
Entre los músculos 
intercostales externo 
e íntimo
Atrás:
Lateralmente:
Entre los músculos 
intercostales interno 
e íntimo
Detrás del músculo 
intercostal interno
Adelante:
 
 
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ARTERIA AORTA
Aorta ascendente
Arco aórtico
Aorta descendente
(porción torácica)
 Arteria coronaria derecha
 Arteria coronaria izquierda
 Tronco braquiocefálico
 Arteria carótida primitiva izquierda
 Arteria subclavia izquierda
 Arterias mediastínicas
 Arterias intercostales posteriores 
 Arterias esofágicas medias
 Arterias bronquiales
 Arterias pericárdicas
37
 
 
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Slide 38 
RAMAS AURICULARES
 RAMA DEL NSA
 RAMA DEL NAV
RAMAS VENTRICULARES
 ARTERIA DEL CONO 
ARTERIOSO
 RAMA MARGINAL DERECHA
ARTERIA INTERVENTRICULAR 
POSTERIOR
 RAMAS SEPTALES
38
Aorta ascendente
Arteria coronaria derecha
Arteria coronaria izquierda
Arteria circunflejaArteria interventricular anterior
 Rama lateral (para el VI)
 Rama del cono arterioso
 Rama anastomótica para la 
marginal derecha
 Ramas septales
 Ramas auriculares
 Rama marginal izquierda
 Rama posterior del 
ventrículo izquierdo
 
Slide 39 
Arco aórtico
Tronco braquiocefálico
Arteria carótida primitiva izquierda
Arteria subclavia izquierda
 Arteria pericardiofrénica
 Arterias intercostales 
anteriores (6 primeras)
 Arteria epigástrica superior
 Arteria musculofrénica
Arteria 
vertebral
Arteria torácica interna
Tronco 
tirocervical
Tronco 
costocervical
 Arteria intercostal 
suprema
6 últimas intercostales 
anteriores
3 primeras intercostales 
posteriores
39
 Arteria carótida primitiva derecha
 Arteria subclavia derecha
 
 
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Slide 40 
Aorta descendente
(porción torácica)
Arterias mediastínicas
9 últimas arterias intercostales posteriores
Arterias esofágicas medias
Arterias bronquiales
Arterias pericárdicas
40
 
 
Slide 41 
 
41
Arterias intercostales anteriores
Arterias intercostales posteriores
6 primeras
6 últimas
3 primeras
9 últimas
Arteria torácica interna
Arteria musculofrénica
Arteria intercostal suprema
del tronco costocervical de la subclavia
Aorta torácica
 
 
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