Describe the challenges of using animal models to research chronic diseases in humans. name causes of cardiovascular disease and discuss what determines the presence or absence of these risk factors in individuals. explain how mutations in dna lead to cancer and identify what causes these mutations. demonstrate public health approaches to primary prevention of cancer, diabetes, and other chronic diseases.

The heart and lung are located in which cavity ? thoracic

An 80-year-old woman comes to the urgent care clinic with dyspnoea on exertion. on physical examination, her blood pressure is 100/70, and her pulse is 75. she has no pulsus paradoxus. her jugular veins are distended, and she has distant heart sounds. in addition, she has extra third and fourth heart sounds. her liver is enlarged, and she has pedal oedema. she has occasional premature ventricular contractions on her electrocardiogram. a chest x-ray reveals clear lung fields with a dilated cardiac silhouette. her echocardiogram reveals ventricular walls with a "speckled pattern". which of the following is the most likely diagnosis? - alcoholic cardiomyopathy- amyloidosis- haemochromatosis- tuberculosis- viral myocarditis

When planning a menu for children, what are the best food items to consider? a. white bread and only white flour products b. canned and processed foods c. whole-grain bread and fresh fruit and vegetables d. frozen fruits and vegetables