Science Homework Help

Sofia Martinez is a 19-year-old sophomore majoring in pre-medicine at the University of Arizona. In the past few weeks leading up to final exams, Allison has felt unusually tired despite receiving an adequate amount of sleep at night. She also has had frequent headaches, and has experienced times when her heart “felt like it was missing a beat.” She has noticed lightheadness and blurred vision at times. Friends sometimes comment that she looks “pale and tired”. Yesterday at lunch, Sofia fainted while waiting in line in the cafeteria. Initially, she attributed this episode to being unusually tired and hungry, but later in the day she fainted again while waiting to mail a package at the Post Office. Both times she collapsed to the floor but recovered spontaneously.

When Sofia informed her mother about what had happened that day, her mother immediately scheduled an appointment for Sofia to see the family physician.

1. List the common causes of fainting as pertains to Sofia’s situation and a short explanation of each.