Development of the Heart

Flashcards covering key concepts related to the development of the heart as discussed in the lecture notes.

The cardiovascular system is the first system to function in the embryo to ensure __.

nutrition

The cardiovascular system develops in the middle of the __ week of embryonic development.

3rd

Mesodermal angiogenic cells form clusters called __.

blood islands

The peripheral cells after canalization form the __.

endothelium

The central cells in blood islands break to form __.

primitive blood cells

The heart develops from the __ mesoderm in the cardiogenic area.

splanchnic

The developing heart tubes lie in the ventral aspect of the embryo dorsal to the __ sac.

pericardial

The mesoderm dorsal to the pericardial sac is called the __ plate.

cardiogenic

After lateral folding of the embryo, the middle parts of the two heart tubes fuse forming a single __.

heart tube

The myoepicardial mantle surrounds the heart tube, forming the __.

myocardium

The visceral layer of the pericardial sac forms the __ of the heart.

epicardium

Four chambers appear as dilatations in cranio-caudal order including Bulbus cordis, __, Atrium, and Sinus venosus.

Ventricle

The constriction between the atrium and ventricle is called the __ canal.

atrio-ventricular

At the caudal end, each horn of sinus venosus receives three veins: __ vein, Umbilical vein, and Common cardinal vein.

Vitelline

The cranial part at the arterial end dilates to form __, which divides into right and left aortic horns.

aortic sac

As the heart develops, it becomes U-shaped, then S-shaped, and eventually forms a __.

heart loop