3 Mixed seromucous salivary glands, structure of glandular acini The three large glands have a different composition in the type of secretory units is concerned: - The parotid glands (which represent 25% of the production of saliva) are formed by serous production units and they are compound acinar type.
How Anti-Lock Brakes Work. An anti-lock brake system (ABS) is a braking system that is made to allow a vehicle to maintain traction with the road when braking. Braking is controlled by driver input via the brake pedal, and older braking systems response to a driver braking suddenly or with intense pressure was sometimes to lock up or skid.
While the pump acts like any casual electric pump using a master cylinder and a piston, the operation of the valves is equally simple. When the ABS kicks in, it means the braking pressure the rider applies to the discs is too big, and the ECU calculates how much it should lower it to prevent the wheels from losing grip.