antebrachial (or antebrachium) = the part of the arm between the brachium (upper arm) and the carpus (wrist); known as the "forearm".
axillary = armpit
The antebrachial region is distal to the axillary region. This means that the forearm (antebrachium) is situated below the arm (axilla) when the body is in the anatomical position.
Distal. Distal means farther away from the point of attachment. Antebrachial refers to your forearm and axillary refers to your armpit. So your forearm is farther away from your armpit when it comes to where it attaches to the body.
No, the body is standing in the anatomical position
In the anatomic position, the ears are superior to the shoulders.
If you are healthy and normal then you should not need to do anything to keep the uterus in its normal anatomical position, it should remain in its normal anatomical position by itself.
... the Anatomical position
If the body is upside down then it is no longer in the anatomical position. But no, it would not change.
The palm is up in the anatomical position. This is also when the forearm is supinated.
Posterior
anatomical position
Posterior and Dorsal
Dorsum Posterior
Anatomical position and fundamental position are different. Fundamental position in standing with palms facing the body. Anatomical position is standing with the palms facing forward and thumbs pointing away from the body.