Within the Iris Are Three Sets of Antagonistic Smooth Muscles

question 6

True/False

Within the iris are three sets of antagonistic smooth muscles.

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Definitions:

Vehicle Retarder

Auxiliary braking device used to supplement the service brakes; in most cases these convert chassis kinetic energy into hydraulic or electrical energy and are located in the driveline. Distinct from engine or transmission retarders.

Kingpin Lock

A security device that locks the kingpin of a semi-trailer to prevent unauthorized coupling or theft of the trailer.

Drive Axle

The axle specifically responsible for transmitting power from the transmission to the wheels, propelling the vehicle forward or backward.

Truck Configurations

The specific arrangement or setup of parts and systems on a truck designed for particular purposes.