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Y Chromosome
Chromosoma Y
The smaller of the two sex chromosomes, found only in genetic males and carrying the master switch for male sex determination.
If you've been searching for body parts that start with Y, you'll find 3 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
| Y Chromosome | Yellow Bone Marrow | Yolk Sac |
List of Body Parts That Start With Y
2
Yellow Bone Marrow
Medulla ossium flava
A fatty tissue found in the central cavities of long bones, serving as an energy reserve and a backup site for blood cell production.
3
Yolk Sac
Saccus vitellinus
An early embryonic membrane that provides nutrients and the first blood cells before the placenta takes over.
About body parts starting with Y
That's our current list of body parts starting with the letter Y. We add new entries every week — if you have a favorite body part starting with Y that isn't on this page, let us know and we'll write it up.
Looking for more? Try body parts that end with Y, or contain Y anywhere in the name.