Sofia's Anatomy Physiology Blog: Heart Dissection Lab

1. The pericardium is the outer most layer of the heart, it´s purpose is hold the heart and prevent that it broken when all the pressure of the blood goes inside the heart. It consists of an outer fibrous layer and a inner double layer of serous membrane.

2. The arteries looked larger than the veins. The arteries are more muscular and have more elasticity than the veins, and the veins have valves to prevent the back flow of blood.

3. The auricle is an extra each to hold the blood. The function of the auricle is to increase the capacity of the atrium and the volume of blood it can contain.

4. The ventricle is bigger and thicker than the auricle because the ventricle pump out blood from the heart. The atria receive blood from the veins so they are thinner.

5. a.Exit from the coronary sinus; empties into the right atrium (smaller side)

b. Exit from the inferior vena cava; on the flap on the right posterior side
c. Tricuspid valve; white ring between right atrium and ventricle and has three visible flaps

6. Picture of tricuspid valve, chordate tendon, papillary muscle

7. The "anchoring" of the heart valves by the chordate tendon and papillary muscles is important because they serve as wires and help connect the cusps.

8. We can see the bicuspid valve that looks as opaque pouch and is connected to the chordate tendinae and has two flaps.

9. The function of the semi-lunar valve is to make sure that there is no back flow between the atrium and the ventricle.

10. a.The blood is not able to be pushed to the heart so it would cause swelling in the ankles and feet.

b. Different parts of the body would be oxygen-deprived and the blood would be unable to delivered to every part of the body.

11. The bicuspid valve looks like a pouch that intertwines with the chordate tendinae. The chordate tendinae are attached to the papillary muscles and look like stringy fibers tissue.