Heart Derivatives

the right auricle and the part comprised by the pectinate muscles (rough wall) are derived from

the right auricle and the part comprised by the pectinate muscles (SMOOTH wall) are derived from

the left auricle and the part comprised of the pectinate muscles (rough wall) are derived from

smooth wall part of the left atrium are derived from

The trabecular part in the right ventricle is derived from the

the conus ateriousus (to pulmonary valves) in the right ventricle are derived from the

The trabecular part in the left ventricle is derived from the

the outflow tract (to aortic valves) are derived from the

the proximal part of the pulmonary trunk is derived from

the proximal part of the ascending aorta is derived from

a decrease in pulmonary resistance is due to

an increase in systemic resistance due to

the umbilical arteries close due to smooth muscle contraction in vessel walls...they become the

the umbilical vein and ductus venosus close and they become the

the ductus ateriosus is closed by muscle contractions of its wall and it becomes the

the foramen oval is closed by increased pressure in the left atrium due to pulmonary good flow and it becomes the

the transverse portion of the sinus and the proximal portion of the left sinus horn become

The right common cardinal vein becomes the

the right vitelline vein becomes the

the right umbilical vein becomes

The sinuatrial orfice is boarded by "venous valve" a part of one of these becomes the valves of the _____(2 things)_____ of the adult heart

the sinus venous of the right atrium becomes the

the membranous IV septum is derived from

the muscular IV septum is derived from the

develop from small tubercles which develop int he primitive truncus arteriosus

develop from the tissue of the outgrowths that subdivided the primitive AV canal