The straight-4 is an internal combustion engine with four cylinders aligned in one row. This is the most common configuration used in cars with an engine size up to 2.0, in some cases up to 2.6 litres.
... urethra is about 8 inches (200 mm) long and opens at the end of the penis.
Medical problems of the urethra:
Hypospadias[?] is a form of abnormal development of the ...