Answer to Question 1
Ans:
C
Feedback:
his regulation and attempt to normalize blood pressure are an example of a negative feedback mechanism, in which physiological processes result in the maintenance of homeostasis. This process of normalization is not an example of positive feedback, and homeostasis is the goal rather than the process. This process involves adaptation, but negative feedback is a more precise characterization of the process.
Answer to Question 2
Ans:
A, C, E
Feedback:
Neuroblastomas are the second most common solid malignancy in childhood after brain tumors. Clinical manifestations vary with the primary site (usually the adrenal glands) and include large abdominal masses, fever, and possibly weight loss. Bone pain suggests metastatic disease.