Deep is the medical term meaning far from the surface.
Inferior is the medical term meaning below; the medical terminology combining form is infra-.
Submandibular is the medical term meaning below the lower jaw, or mandible.
infrapulmonary
"Sub-" is the prefix in the medical term that means below the skin.
Antarctica is situated below the equator at the South Pole.
to go naked,especially below the waist
Bladder is not situated below the kidney. It was situated posterior to the kidney. You have adapted the erect posture and so bladder came below the kidney. Actually it was posterior because it was convenient to have it near the outlet.
It is in the mantle, consisting of the upper and lower mantle, which measures about 2855 km. It is situated below the Earth's crust, about 35km from Earth's surface.
hypochondriac
Hypothalamic means under or below the thalamus.
Anticoagulant ~ see related link below .
Hyperparathyroidism. You can read more at the link below