SQL to Show Custom Tables Microsoft SQL Server

Question

I created a table type in SQL Server so I could pass a data table into a stored procedure using c#. Is there a SQL Statement I can use to see all the custom table types that were created.

CREATE TYPE myTable AS TABLE
(
    intMyTableID int identity(1,1) Not NULL,
    [columnName] varchar(50),
    [valueWas] varchar(50),
    [valueNow] varchar(50)
)

In the stored procedure I use it this way:

@mytable myTable READONLY

There is no way I can see from Object Explorer to see custom created Types so I am asking if there is a SQL Statement I can use to see it.