Histology of Heart and Blood Vessels

Descrição

Degree CVS1 Mapa Mental sobre Histology of Heart and Blood Vessels, criado por Hannah Tribe em 27-04-2014.
Hannah Tribe
Mapa Mental por Hannah Tribe, atualizado more than 1 year ago
Hannah Tribe
Criado por Hannah Tribe mais de 10 anos atrás
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Resumo de Recurso

Histology of Heart and Blood Vessels
  1. Vessels
    1. Tunica adventitia
      1. connective tissue
        1. In contact with ECF
          1. Gives support

            Anotações:

            • important to maintain shape
          2. Tunica media
            1. smooth muscle
              1. allows tone

                Anotações:

                • gives elasticity and contractility
                1. regulates blood pressure
                  1. thicker in arteries

                    Anotações:

                    • thickest in aorta and pulmonary arteries - lots of elastic lamellae to stretch and recoil in response to pulse
                    1. elastic lamellae

                      Anotações:

                      • look dark under a microscope
                      1. Dissecting aneurism of aorta

                        Anotações:

                        • blood enters t. media due to wall rupture
                      2. Tunica intima
                        1. endothelium
                          1. collagen
                            1. in contact with blood
                              1. selectively permeable
                                1. makes mediators of inflammation and tone
                                  1. Regulates adhesion of platelets
                                2. Muscular artieries

                                  Anotações:

                                  • e.g. carotid, iliac,brachial
                                  1. distribute blood
                                    1. not elastic
                                      1. contractile
                                        1. regulate flow
                                          1. regulate pressure
                                          2. Lots of collagen in adventita
                                            1. layer of elastic lamina between media/intima and media/adventitia
                                            2. Arterioles
                                              1. microscopic
                                                1. regulate flow
                                                  1. regulate pressure
                                                  2. Capillaries
                                                    1. mainly endothelial cells
                                                      1. exchange
                                                        1. Continuous
                                                          1. NO gaps in walls
                                                          2. Fenestrated
                                                            1. pores
                                                            2. Sinusoids

                                                              Anotações:

                                                              • in liver and spleen
                                                              1. WIDE fenestrations
                                                            3. Veins/venules
                                                              1. thin/flexible walls
                                                                1. more prominent adventitia
                                                                  1. thin/no t.media
                                                                    1. valves
                                                                      1. longitudinal smooth muscle between valves

                                                                        Anotações:

                                                                        • assists flow against gravity
                                                                      2. Heart
                                                                        1. pumps blood
                                                                          1. regulates BP
                                                                            1. secretes ANP

                                                                              Anotações:

                                                                              • atrial natriuretic peptide
                                                                              1. stimulated by over stretched atria
                                                                                1. Increases water and sodium uptake to urine

                                                                                  Anotações:

                                                                                  • = lowers blood volume
                                                                              2. valves
                                                                                1. elastic fibres
                                                                                  1. collagen
                                                                                  2. Epicardium

                                                                                    Anotações:

                                                                                    • (visceral pericardium)
                                                                                    1. fatty, loose connective tissue
                                                                                      1. nerves
                                                                                        1. vessels
                                                                                          1. coronary arteries
                                                                                            1. mesothelium
                                                                                              1. simple cuboidal
                                                                                                1. adipose tissue
                                                                                            2. Myocardium
                                                                                              1. part which contracts
                                                                                              2. Endocardium
                                                                                                1. endothelium
                                                                                                  1. loose connective tissue
                                                                                                    1. lots of Purkinje fibres

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