How does Othello abuse Desdemona? How does she respond to the abuse?

After Iago is able to convince Othello that Cassio and Desdemona are sleeping together, even fabricating some false details of their lovemaking, Othello becomes increasingly upset. All his worst fears that he is not really lovable and that his beloved will betray him seem to be coming to life. Egged on by Iago, Othello's behavior becomes increasingly irrational and violent. As he says to Iago:

I'll tear her all to pieces.

Desdemona suffers verbal abuse from her husband, including derogatory name calling, as well as physical abuse when Othello hits her. She is confused and upset, but she responds to this abuse calmly. She is baffled about her husband's behavior and doesn't think to defend herself properly because she hasn't done anything wrong.
Finally, convinced that Desdemona has been unfaithful to him, Othello kills her. After Othello realizes what has really happened, he kills himself.

Othello's abuse of Desdemona escalates quickly after Iago informs him that she has been sleeping with Michael Cassio in act three, scene three. After believing Iago, Othello acts rudely toward Desdemona and raises his voice to her in act three, scene four. Desdemona excuses her husband's behavior and blames herself for losing his precious handkerchief. In act four, scene one, Desdemona attempts to explain to Lodovico that her husband has fallen out of favor with Michael Cassio. Othello once again reveals his anger toward Desdemona by calling her the devil and hitting in her public. Desdemona keeps her composure and obediently leaves the scene out of fear that she will upset Othello even more.
Othello continues to verbally abuse Desdemona in act four, scene two by comparing her to a weed that pretends to be a flower and calling her an "Impudent strumpet!" Othello continues referring to Desdemona as a whore and rudely leaves when Emilia enters the scene. Desdemona once again refuses to curse Othello and becomes increasingly depressed about her difficult situation. She is concerned about her safety but refuses to challenge her husband's aggressive behavior. In act five, scene two, Othello is driven to the point of madness and ends up murdering Desdemona in her bed by smothering her to death. Overall, Othello verbally and physically abuses Desdemona before finally ending her life.