I would assume it mean absent of the left renal function or kidney
It is the failure of the fetal kidneys to form
When a kidney is the size of a pea, it is typically indicative of a condition known as renal agenesis or hypoplasia. Renal agenesis refers to the complete absence of one or both kidneys, while hypoplasia indicates that the kidneys are underdeveloped. Both conditions can lead to various complications, including issues with renal function and hypertension. Further evaluation is necessary to determine the underlying causes and implications for the individual's health.
An agenesis is an imperfect development of the body, or an anomaly of organization.
I believe it is called Unilateral Renal Agenesis.
Renal veins empty into the inferior vena cava
Aplasia is the absence of the organ with only the rudiment present Agenesis is the complete lack of the organ
The left and right renal arteries and veins branch off from the abdominal aorta.
The venous drainage of the kidney primarily occurs through the renal veins, which collect deoxygenated blood from the renal cortex and medulla. Each kidney has its own renal vein that drains into the inferior vena cava on the right side and into the left renal vein on the left side. The left renal vein also receives blood from the left gonadal vein and lumbar veins before it empties into the inferior vena cava. This venous system ensures efficient return of blood to the heart after filtration in the kidneys.
agenesis
left atrium -> left ventricle -> aorta -> renal artery -> renal vein -> inferior vena cava -> right atrium -> right ventricle
left
Since the renal veins empty into the large inferior vena cava, it is more reasonable for the smaller amount of venous blood flow from the testicle to use the renal vein (rather than empty directly into the inferior vena cava).