1
Occipital Bone
Os occipitale
The single bone at the back and base of the skull that surrounds the foramen magnum where the spinal cord exits.
If you've been searching for body parts that start with O, you'll find 5 detailed body parts below. We're not interested in giving you only a list of names — every entry on this page links to a full profile with the kind of detail you'd actually want to know.
For body parts, that means body system, location, function, and scientific name.
Table of contents
| Occipital Bone | Olfactory Bulb | Optic Disc | Optic Nerve |
| Ovary |
List of Body Parts That Start With O
2
Olfactory Bulb
Bulbus olfactorius
A small forebrain structure at the front of the brain that processes incoming signals about smell.
3
Optic Disc
Discus nervi optici
A small circular area on the retina where the optic nerve fibers leave the eye and blood vessels enter.
4
Optic Nerve
Nervus opticus
The cranial nerve that carries visual information from the retina to the brain.
5
Ovary
Ovarium
A paired female reproductive gland that produces eggs and secretes the hormones estrogen and progesterone.
About body parts starting with O
That's our current list of body parts starting with the letter O. We add new entries every week — if you have a favorite body part starting with O that isn't on this page, let us know and we'll write it up.
Looking for more? Try body parts that end with O, or contain O anywhere in the name.