All bones have foramen in them. These are canals or openings through which nerves and blood vessels go.
The hilum is the part of the organ where vessels and nerves enter and leave.For most organs vessels and nerves enter an leave all over the place and not always near each other. However in the kidneys and lungs the major blood vessels enter at an area called the hilum.
foramen
FORAMEN - Opening or passage in bones where blood vessels and nerves enter and leave. The foramen magnum is the opening of the occipital bone through which the spinal cord passes.
AOrta
The Aorta and the Vena Cava
on the concave side of the kidney , which faces the vertebral column, lies a depressin called Hilus. it provides a placefr the renal vessels, nerves and the ureter to enter or leave the kidney.
on the concave side of the kidney , which faces the vertebral column, lies a depressin called Hilus. it provides a placefr the renal vessels, nerves and the ureter to enter or leave the kidney.
on the concave side of the kidney , which faces the vertebral column, lies a depressin called Hilus. it provides a placefr the renal vessels, nerves and the ureter to enter or leave the kidney.
They enter and leave on the or at the superior border.
hilum.
Capillaries. they have such thin walls that substances can easily diffuse through them.
Splanchnic nerves