1
blood flow stops in a vein
2
toward the midline
3
toward the head
4
mouth: any body cavity
5
a cavity, as within a bone
6
the base or body of a hollow organ
7
opposite of prone
8
a circular muscle that regulates an opening
9
the central opening within a tube or hollow organ
10
cavity with the brain in it.
11
the opening of a cavity
12
a passage or opening
13
a wall dividing two cavities
14
a finger or toe
