Comp Vert Comparative Heart Anatomy and Mammalian Heart

  1. Fish Heart
    • Single Pass, Unidirectinal Pump
    • 4 Chambers:
    • Sinus Venosus, Atrium, Ventricle, Conus Arteriosus
  2. Fish Heart Chambers
    • Sinus Venosus-
    • thin walled sac
    • Vein like
    • Recieves deoxygenated blood-Common Cardinal and Hepatic Veins
    • Sinoatrial Value
    • Atrium -Thicker walls, Atrioventricular Valve
    • Ventricle -Major Blood Pump, Thickest Walls
    • Conus Arteriosus
    • Semilunar Valves
    • Extends Cranially as Ventral Aorta
    • IN TELOSTS=BULBOUS ARTERIOSUS
  3. Amphibian Heart Number of Atrium and Ventricle
    • Divided Atrium
    • Single Ventricle
  4. Amphibian Heart Divided Atrium
    • Divided Partially in LungFish
    • Completly in Amphibians
    • Right Atrium recieved DEOXYGENATED systemic blood
    • Left Atrium recieves OXYGENATED pulmonary blood via pulmonary veins
    • Atrial Walls have trabeculae (Muscular folds) that help to direct the blood
  5. Amphibian Heart: Single Ventricle
    • Recieves both DEOXYGENATED AND OXYGENATED blood from right atrium and
    • Trabecular arrangement of ventricular wall mostly keeps two bloods septerate
    • Blood leave Ventricle via: Trucucs Arteriosus (Subdivided spiral valve), Right ventricle sends ventrally preferentially to pulmonary arteries, Left ventricle sends blood preferentially to head and rest of body
  6. Reptilian Heart
    • Atrium:
    • Completly divided in amphibian
    • Ventricle:
    • Incompletly divided in most reptiles
    • Completly divided in cocodilians
  7. Turtle Heart- Atrium and Ventricle
    • Right atrium recieves deoxygenated systemic blood
    • Left atrium recieves oxygenated pulmonary blood
    • Single Ventricle partly subdivided into left and right chambers
    • Left side= cavum arteriosum
    • Right side=cavum venosum
    • Two sides connected by interventricular canal
    • The right side of the ventricle is further separated by a muscular septum: formes the more central cavum pulmonale
    • The Muscular flap serves as a one-way valve for the interventricular canal
  8. Turtle Heart Blood Flow
Author
brittwayb
ID
121315
Card Set
Comp Vert Comparative Heart Anatomy and Mammalian Heart
Description
Heart Anatomy and Mammalian Heart
Updated