What's with BUTTONS on MEN'S shirts and WOMEN'S blouses?

Whats with BUTTONS on MENS shirts and WOMENS blouses?

Have ever noticed anything special about the buttons on a man's shirt compared to a woman's blouse?

What's going on?

Updates
9 mo
My mother worked in a department store when she was younger. I asked her once about the button difference. She told me that the difference in buttons made it easier for them to put blouses in the ladies department and shirts in the mens department.
What's with BUTTONS on MEN'S shirts and WOMEN'S blouses?
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