PDE5 Inhibitors: Mechanism, Clinical Uses & Safety Overview
PDE5 inhibitors (Phosphodiesterase Type 5 inhibitors) are a class of medications primarily used to treat erectile dysfunction (ED) and certain cardiovascular conditions such as pulmonary arterial hypertension (PAH). These agents enhance vasodilation by inhibiting the PDE5 enzyme, which regulates cyclic guanosine monophosphate (cGMP) levels in smooth muscle cells.
Mechanism of Action
By blocking PDE5, these drugs increase cGMP concentrations, promoting smooth muscle relaxation and improved blood flow—particularly in the corpus cavernosum during sexual stimulation.
Common PDE5 Inhibitors
Viagra (sildenafil)
Cialis (tadalafil)
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The "On Deaf Ears" quest in Arc Raiders is widely considered one of the most challenging missions introduced in the latest update-not because of combat difficulty, but because of navigation and information scarcity. The objective sounds simple on paper: interact with four different computers scattered across Stella Montis. In practice, however, the game provides no map markers, no directional hints, and places the quest entirely within one of ARC Raiders BluePrints the most dangerous zones in the game.
To make matters worse, Stella Montis is packed with high-level ARC threats and frequent player encounters. The good news is that "On Deaf Ears" does not need to be completed in a single run. Progress is saved after each interaction, meaning you can extract or get eliminated and resume from the next step in a future raid.
This guide breaks down every step of the quest and explains exactly where to go, how to get there safely, and what to look for so you can send all the required data back to Lance without unnecessary trial and error. The right ARC Raiders Items can be very helpful to you.
"On Deaf Ears" Quest Objectives
The quest consists of four distinct objectives, each tied to a specific location within Stella Montis:
Locate the researcher's guest logs on the Reception computers
Find where the researcher held their lecture and access their lecture notes
Retrieve prototype information from the Medical Research computers
Collect the printed shipping logs from the Assembly Workshops
Each objective requires interacting with a specific computer or physical document. Any qualifying terminal will work for the steps involving computers, but the final step requires finding a specific item in the environment.
Finding the Reception Computers
Your first destination is the Business Center Reception area. This location is fairly central and can be reached from multiple routes, making it a good starting point.
The easiest ways to reach the Reception are:
Entering from the west through the Lobby
Traveling north from the Cultural Archives and Auditorium
Once inside, look for the massive "Reception Business Center" signage on the wall. This confirms you're in the correct area. Behind the main reception desk, you'll find a computer terminal. Interact with it to ARC Raiders Bp for sale retrieve the researcher's guest logs and complete the first quest step.