Please enable JavaScript.

Coggle requires JavaScript to display documents.

Introduction to CV (Atria and ventricle (Valves (Atrioventricular…

- - - - Mitral/bicuspid in left
      - Tricuspid in right
    - - Aortic in left
      - Semiluna
- - - - Invests lungs
    - - (Mediastinal pleura + diaphragmatic pleura + costal pleura)
- - - - When muscles relax before valves open, and volume of ventricle unaltered
    - - Muscles contract before valves open and volume of ventricle unaltered
- - - - Dorsal
        
        Thoracic vertebrae
      - Ventral
        
        Sternum
        
        1st = Manubrium
        
        Last = Xiphoid process w/ xiphoid cartilage
      - Laterally
        
        Rib cage
        
        Bone for 2/3 dorsally
        Cartillage for 1/3 ventrally
        Junction = Costochondral
        
        Costal arch w/ floating last rib ((10-12 form arch in dogs, 13 is floating)
        
        Heart between ribs 3 and 6
      - Cranial
        
        Thoracic inlet
      - Caudal
        
        Diaphragm
- - - - 2 lobes - Cranial and caudal
    - - 4 lobes - Cranial, middle, caudal, accessory (horse lacks middle lobe)
- - - - Bundle of His
        
        Passes through annulus fibrosus and divides into 2 limbs, left bundle branch and right bundle branch
        
        Left bundle
        
        Divides into anterior and posterior fasicles
        
        Right bundle
        
        Septomarginal band crosses to free wall of right ventricle
        
        Purkinje fibres
      - Atria and ventricles separated by annuus fibrosus.
        Conducts slowly allowing atria to contract first
- - - - S1 ('lup')
        
        AV vales close and blood rebounds within ventricles and accelerates within aorta (start of systole)
      - S2 ('dup')
        
        Semilunar valves close and blood decelerates in the great vessels (end of systole)
    - - S3 - Blood turbulence in left ventricle
      - S4 - Stiff ventricular wall, increased force of atrial contraction. Normal in horse