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Q.16

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Biology
Found in: Page 7

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Short Answer

Which mechanism of hormonal stimulation would be

affected if signaling and hormone release from the

hypothalamus was blocked?

a. humoral and hormonal stimuli

b. hormonal and neural stimuli

c. neural and humoral stimuli

d. hormonal and negative stimuli

Hormonal and neural stimuli would be affected if signaling and hormone release from the hypothalamus were blocked. Hence, the correct option is 'b'.

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Step by Step Solution

Step 1. Introduction

The term "hormonal stimuli" describes the hormones that are released in reaction to hormones that are released by other endocrine glands. The release of hormones in response to neural stimulation is referred to as neural stimuli.

Step 2. Explanation of the correct option 

A hormone is released in response to another hormone, which is referred to as a hormonal stimulus. When activated by hormones released by other endocrine glands, certain endocrine glands release hormones. Neural stimuli are when the neurological system directly causes the release of hormones from the endocrine glands. Remember that the hormones adrenaline and norepinephrine are crucial for supplying the quick bursts of energy needed for the body to react during a short-term stress response.

Step 3. Explanation of the incorrect options 

The word "humoral" comes from "humor," which describes biological fluids like blood. A humoral stimulus is a change in the extracellular fluids, such as blood, or the ion concentration in the blood, which affects the release of hormones. For instance, a spike in blood glucose levels causes the release of insulin from the pancreas. In a negative feedback loop, as blood glucose levels fall in response to insulin, the pancreas is alerted to stop manufacturing insulin.

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