Foramina venarum minimarum
Encyclopedia
The foramina venarum minimarum (foramina Thebesii) are the orifices of minute veins (venae cordis minimae
), which return blood
directly from the muscular substance of the heart
.
Venae cordis minimae
The smallest cardiac veins or Thebesian veins are minute valveless veins in the walls of all four heart chambers. They are most abundant in the right atrium and least in the left ventricle. They drain the myocardium and pass through the endocardial layer to empty directly into the right atrium...
), which return blood
Blood
Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells....
directly from the muscular substance of the heart
Heart
The heart is a myogenic muscular organ found in all animals with a circulatory system , that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions...
.