Answer to Question 1
C
When decreased myocardial blood perfusion is extensive or perfusion is completely blocked, the tissue becomes necrotic and a myocardial infarction occurs. Angina or angina pectoris is the result of decreased blood flow to the myocardium as a result of coronary artery spasms or temporary constriction. When stenosis occurs in the aortic and pulmonic valves, the adjacent ventricles work harder to move the ventricular volume beyond the stenotic valve. When regurgitation occurs, there is a backflow of blood into an adjacent chamber, which causes either pulmonary or systemic congestion. A dysrhythmia is a disturbance in the electrical impulse of the heart rhythm. Any rhythm not generated at the sinoatrial node is classified as such. Dysrhythmias are primary conduction disturbances that occur as a response to ischemia, valvular abnormalities, anxiety, and drug toxicity (e.g., digoxin toxicity).
Answer to Question 2
D
Atheists search for meaning in life through their work and relationships with others. It is impor-tant for agnostics to discover meaning in what they do or how they live because they find no ul-timate meaning for the way things are. They believe that we, as people, bring meaning to what we do. A Buddhist turns inward, valuing self-control, whereas a Christian looks to the love of God to provide enlightenment and direction in life.
The oral cavity. Anterior view of the open mouth.
PET scan of the brain in a patient with Alzheimer’s disease.
A patient examination room should be simple and efficiently designed.
Amyloid plaques (stained blue) in the brain of a deceased patient who had Alzheimer’s disease.
Denture sore mouth in a patient who never removed partial dentures at night.
Lines of the anterior thorax