HK 3401 Lecture 19: Thorax 3

• School: University of Guelph
• Department: Human Kinetics
• Course: HK 3401
• Professor: Lorraine Jadeski

Document Summary

4 chambers of the heart: right and left atria, right and left ventricles. Right atria: forms right border of the heart and receives blood from svc, ivc and coronary sinus. Right auricle is a small conical muscular pouch projecting from the right atrium and increases the capacity of the atrium as it overlaps the ascending aorta. Smooth, thin walled posterior part on which svc, ivc and coronary sinus open, bringing poorly oxygenated blood into the heart. Rough, muscular wall made of pectinate muscles. Opening of the svc into its superior part, at the level of the 3rd costal cartilage. Opening of the ivc into the inferior part, almost in line with the svc at approximately the level of the 5th costal cartilage. The opening of the coronary sinus between the right av orifice and the ivc orifice. A right av orifice through which the right atrium discharges poorly oxygenated blood into the right ventricle during relaxation.