The myocardium is the a. delicate lining of the atria. b. smooth lining of ventricles. c. inner lining of atria and ventricles. d. muscular wall making up the bulk of the heart.

depression is an ongoing sadness\lack of motivation. you feel and feel like its never going to get better. you're so sad to the point you think of death.

anxiety is an ongoing feeling of paranoia\ feeling like everyone is watching you and making fun of you. you get nervous easily and feel like the room is spinning.  

yes, they cause death every year. its a long, exhausting battle. only few make it through as sad as it sounds.

explanation:

b is the correct answer