Sexed means "having sexual characteristics" - which itself could lead to a discussion because a person like COMV would define a "sexual characteristic" is different to how I would define it.

Medicine (run by males) used to assume that only the reproductive organs that we call sex organs like the testes, ovaries, prostate, penis, vagina, uterus etc were sexed or had sexual characteristics. All the other organs they assumed were identical in the two sexes. But of course, all organs are made up of cells, and all the nucleated cells in our bodies (meaning all cells in our bodies except mature red blood cells, and one kind of cell in a part of the eye) contain sex chromosomes. Now that research is being done by scientists open to the idea that the sex of cells might lead to different characteristics in the organs that those cells make up, a vast number of differences are being found and proven to exist. It turns out that organs that outwardly look the same in the two sexes, and which perform the same tasks, are often different in innumerable ways and they go about performing the same tasks in different ways too.

Differences in placental cells of XY and XX zygotes have been found 5-6 days after fertilization, when the zygotes are implanting themselves in the uterine lining and the placenta is just starting to grow.

There's a big body of scientific research showing vast differences in the respiratory tracts and respiratory function of male and female humans. I've posted a lot of links before. I don't have time to pull them all out now, but they're in my posting history in convo with Fleurista especially. I know about these differences because of my interest in sports & sex differences that affect male and female sports performance, but even more because I had a brother and sister with cystic fibrosis - which is a disease that's been observed since it was first identified in the 1950s to affect boys & girls very differently from a very early age. The same exact disease caused by the same genetic mutation has a different trajectory in the two sexes, even in families where the children live in the same physical environment & have access to the same level of medical care, home care, nutrition, etc. This is turning out to be the case with a lot of inherited diseases, in fact.