Histology of Heart and Blood Vessels

Beschreibung

Degree CVS1 Mindmap am Histology of Heart and Blood Vessels, erstellt von Hannah Tribe am 27/04/2014.
Hannah Tribe
Mindmap von Hannah Tribe, aktualisiert more than 1 year ago
Hannah Tribe
Erstellt von Hannah Tribe vor mehr als 10 Jahre
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Zusammenfassung der Ressource

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

            Anmerkungen:

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

                Anmerkungen:

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

                    Anmerkungen:

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

                      Anmerkungen:

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

                        Anmerkungen:

                        • 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

                                  Anmerkungen:

                                  • 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

                                                              Anmerkungen:

                                                              • 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

                                                                        Anmerkungen:

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

                                                                              Anmerkungen:

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

                                                                                  Anmerkungen:

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

                                                                                    Anmerkungen:

                                                                                    • (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
                                                                                                  Zusammenfassung anzeigen Zusammenfassung ausblenden

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