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SISTEMA CARDIOVASCULAR
ARTÉRIAS E VEIAS
Profa. Ma. Adalmira B. Lima Ramos
2.2 ARTÉRIAS
1. CONCEITO
VASOS QUE CONDUZEM O SANGUE DO CORAÇÃO P/ OS TECIDOS
POSSUI PULSAÇÃO – CONTRAÇÃO DAS PAREDES
2. ESTRUTURA
CAMADA EXTERNA – ADVENTÍCIA (TEC. CONJUNTIVO)
CAMADA MÉDIA – MUSCULAR (MÚSC. LISO + TEC. ELÁSTICO)
ARTÉRIAS DE GRANDE CALIBRE SÃO MAIS ELÁSTICAS
(A. AORTA)
ARTÉRIAS DE MÉDIO E PEQUENO CALIBRES SÃO MUSCULARES
CAMADA INTERNA – ÍNTIMA (ENDOTÉLIO)
ARTÉRIAS
ARTÉRIAS
2.3 VEIAS
2.3.1 CONCEITO
VASOS QUE CONDUZEM O SANGUE DOS TECIDOS P/ O CORAÇÃO
NÃO POSSUI PULSAÇÃO
2.3.2 ESTRUTURA
APRESENTAM AS MESMAS CAMADAS DAS ARTÉRIAS, PORÉM
PRINCIPALMENTE
SÃO MAIS FINAS
A TÚNICA INTERNA APRESENTA VÁLVULAS,
NAS VEIAS DOS MEMBROS INFERIORES
Valva
VEIAS
2.4 CAPILARES
2.4.1 CONCEITO
SÃO VASOS MICROSCÓPICOS, DE PAREDES FINAS FORMADAS
POR APENAS UMA CAMADA ENDOTELIAL
ESTÃO SITUADOS ENTRE UMA ARTERÍOLA E UMA VÊNULA
REALIZAM AS TROCAS ENTRE O TECIDO E O SANGUE
ARTÉRIAS
CAPILARES
VEIAS
TÚNICAÍNTIMA
TÚNICAMÉDIA
TÚNICAEXTERNA
2.5 CIRCULAÇÃO SANGUÌNEA
OU
2.5.1 PEQUENA CIRCULAÇÃO
CIRCULAÇÃO PULMONAR
VENT. DIREITO (CO2) > TRONCO PULMONAR (CO2) > ARTÉRIAS
PULMONARES (CO2) > NOS PULMÕES OCORRE A HEMATOSE
ENTRE CAPILARES E ALVÉOLOS (CO2 > O2) > VEIAS
PULMONARES (O2) > ÁTRIO ESQUERDO (O2)
2.5.2 GRANDE CIRCULAÇÃO OU CIRCULAÇÃO
SISTÊMICA
VENT. ESQUERDO (O2) > A. AORTA (O2) > ARTÉRIAS
SISTÊMICAS (O2) > OCORRE A HEMATOSE ENTRE OS
CAPILARES E OS TECIDOS (O2 > CO2) > VEIAS SISTÊMICAS
(CO2) > VEIAS CAVAS (CO2) > ÁTRIO DIREITO
2.5.3 CIRCULAÇÃO PORTAL
UMA VEIA INTERPOSTA ENTRE DUAS REDES DE
CAPILARES, SEM PASSAR POR UM TECIDO INTERMEDIÁRIO
EX.: CIRCULAÇÃO PORTA-HEPÁTICA
CAPILARES INTESTINAIS >VÊNULAS INTESTINAIS > VEIAS
INTESTINAIS > VEIA PORTA > VÊNULAS HEPÁTICAS >
CAPILARES HEPÁTICOS > VÊNULAS HEPÁTICAS > VEIAS
HEPÁTICAS > VEIA CAVA INFERIOR
Sistema.Circulatório/Sistema cardiovascular

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Sistema.Circulatório/Sistema cardiovascular

  • 1. SISTEMA CARDIOVASCULAR ARTÉRIAS E VEIAS Profa. Ma. Adalmira B. Lima Ramos
  • 2. 2.2 ARTÉRIAS 1. CONCEITO VASOS QUE CONDUZEM O SANGUE DO CORAÇÃO P/ OS TECIDOS POSSUI PULSAÇÃO – CONTRAÇÃO DAS PAREDES 2. ESTRUTURA CAMADA EXTERNA – ADVENTÍCIA (TEC. CONJUNTIVO) CAMADA MÉDIA – MUSCULAR (MÚSC. LISO + TEC. ELÁSTICO) ARTÉRIAS DE GRANDE CALIBRE SÃO MAIS ELÁSTICAS (A. AORTA) ARTÉRIAS DE MÉDIO E PEQUENO CALIBRES SÃO MUSCULARES CAMADA INTERNA – ÍNTIMA (ENDOTÉLIO)
  • 3.
  • 4.
  • 6.
  • 7.
  • 8.
  • 9.
  • 11. 2.3 VEIAS 2.3.1 CONCEITO VASOS QUE CONDUZEM O SANGUE DOS TECIDOS P/ O CORAÇÃO NÃO POSSUI PULSAÇÃO 2.3.2 ESTRUTURA APRESENTAM AS MESMAS CAMADAS DAS ARTÉRIAS, PORÉM PRINCIPALMENTE SÃO MAIS FINAS A TÚNICA INTERNA APRESENTA VÁLVULAS, NAS VEIAS DOS MEMBROS INFERIORES
  • 12. Valva
  • 13.
  • 14.
  • 15.
  • 16.
  • 17. VEIAS
  • 18.
  • 19. 2.4 CAPILARES 2.4.1 CONCEITO SÃO VASOS MICROSCÓPICOS, DE PAREDES FINAS FORMADAS POR APENAS UMA CAMADA ENDOTELIAL ESTÃO SITUADOS ENTRE UMA ARTERÍOLA E UMA VÊNULA REALIZAM AS TROCAS ENTRE O TECIDO E O SANGUE
  • 21. 2.5 CIRCULAÇÃO SANGUÌNEA OU 2.5.1 PEQUENA CIRCULAÇÃO CIRCULAÇÃO PULMONAR VENT. DIREITO (CO2) > TRONCO PULMONAR (CO2) > ARTÉRIAS PULMONARES (CO2) > NOS PULMÕES OCORRE A HEMATOSE ENTRE CAPILARES E ALVÉOLOS (CO2 > O2) > VEIAS PULMONARES (O2) > ÁTRIO ESQUERDO (O2) 2.5.2 GRANDE CIRCULAÇÃO OU CIRCULAÇÃO SISTÊMICA VENT. ESQUERDO (O2) > A. AORTA (O2) > ARTÉRIAS SISTÊMICAS (O2) > OCORRE A HEMATOSE ENTRE OS CAPILARES E OS TECIDOS (O2 > CO2) > VEIAS SISTÊMICAS (CO2) > VEIAS CAVAS (CO2) > ÁTRIO DIREITO
  • 22.
  • 23. 2.5.3 CIRCULAÇÃO PORTAL UMA VEIA INTERPOSTA ENTRE DUAS REDES DE CAPILARES, SEM PASSAR POR UM TECIDO INTERMEDIÁRIO EX.: CIRCULAÇÃO PORTA-HEPÁTICA CAPILARES INTESTINAIS >VÊNULAS INTESTINAIS > VEIAS INTESTINAIS > VEIA PORTA > VÊNULAS HEPÁTICAS > CAPILARES HEPÁTICOS > VÊNULAS HEPÁTICAS > VEIAS HEPÁTICAS > VEIA CAVA INFERIOR