Do pathologists take blood from the heart to check for bacteria in the blood ?

Yes

Explanation:

Blood and pathology tests leave many people squeamish, but they’re an important part of detecting, diagnosing and treating disease. In fact, if you’re sick, many decisions about your care will come down to the results of your blood and pathology tests.

Pathology means the study of disease and its causes and progression. Pathology tests cover blood tests, and tests on urine, stools (faeces) and bodily tissues.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.