Blood volume and osmolarity are kept within normal limits by
A)effectors.
B)positive feedback loops.
C)negative feedback loops.
D)countercurrent multipliers.
E)secreting extra amounts.

Question

Quizplus · Accepted Answer

Negative feedback loops help to maintain homeostasis by detecting any changes in variables such as blood volume or osmolarity, and signaling effectors to counteract those changes and return the variables to their normal levels. The other options are not accurate: effectors are the agents of change that are signaled by feedback loops, not the loops themselves; positive feedback increases the response to a stimulus and would not help to maintain stability; countercurrent multipliers are involved in the kidney's ability to concentrate urine and are not related to blood volume or osmolarity regulation; and secreting extra amounts does not describe a specific physiological mechanism for maintaining homeostasis.

Blood Volume and Osmolarity Are Kept Within Normal Limits by