Question

Which of the following statements describes how you would classify Figure 28.2 as a negative feedback loop?

a
The control center counteracts change from a set point.
b
The sensors notice an increase away from a set point.
c
Nerves and hormones carry messages to target organs.
d
A target organ receives and responds to a message.

Answer 1

the answer is a. When the heart rate is too high, the body sends hormones that continually increase the heart rate higher.

Answer 2

a) The control center counteracts change from a set point.

Because negating (opposing) the initial change is the definition of a "negative feedback loop."