Question

part 2: homeostasis

1. give 3 examples of set points.

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1. ______________ feedback reverses the effect of a stimulus and brings an organism directly back to homeostasis.
2. ______________ feedback intensifies the effect of a stimulus and brings the body farther from homeostasis before bringing it back to homeostasis.

Explanation:

1. Set points are the normal values around which the body's internal environment fluctuates. Examples include body temperature (around 37°C or 98.6°F), blood glucose level (maintained within a certain range, e.g., 70 - 140 mg/dL depending on fasting/feeding status), and blood pressure (a typical range for systolic/diastolic is around 120/80 mmHg).
2. Negative feedback is a mechanism that reverses the effect of a stimulus. For example, when body temperature rises, negative feedback mechanisms (such as sweating to cool the body) are activated to bring the temperature back to the set point.
3. Positive feedback intensifies the effect of a stimulus. An example is during childbirth, where uterine contractions (stimulus) cause the release of oxytocin, which further intensifies the contractions (intensifying the stimulus) until the baby is born (a new state, but in the context of the body's overall homeostasis, it's a process that moves away from the non - labor state and then back to a post - partum homeostatic state).

Answer:

1. Body temperature (around 37°C), blood glucose level (e.g., 70 - 140 mg/dL), blood pressure (e.g., 120/80 mmHg).
2. Negative.
3. Positive.