Introduction to Human Disease: Pathophysiology for Health Professionals 6th Edition by Agnes Loeffler,Michael Hart

Exercise 3

A 76-year-old woman who is otherwise perfectly healthy, does not smoke, and does not have hypertension develops pneumonia. She is at greater risk of dying from this disease than a 42-year-old woman would be because of age-related changes in her
A) heart.
B) liver.
C) brain.
D) immune system.
E) endocrine system.