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Multiple Choice
Which of the following is not a category of endocrine gland stimulus?
A
Chemical
B
Neural
C
Humoral
D
Hormonal
Verified step by step guidance
1
Begin by understanding the types of stimuli that can trigger endocrine glands to release hormones. These stimuli are generally categorized into three main types: humoral, neural, and hormonal.
Humoral stimuli refer to changes in the blood levels of certain ions and nutrients that can directly stimulate hormone release. For example, a decrease in calcium levels in the blood can stimulate the parathyroid glands to release parathyroid hormone.
Neural stimuli involve the nervous system directly stimulating endocrine glands. An example is the adrenal medulla being stimulated by the sympathetic nervous system to release adrenaline during stress.
Hormonal stimuli occur when hormones from one gland stimulate another gland to release its hormones. For instance, the hypothalamus releases hormones that stimulate the pituitary gland to release other hormones.
Review the options given: Chemical, Neural, Humoral, Hormonal. Recognize that 'Chemical' is not a standard category of endocrine gland stimulus, as the correct categories are humoral, neural, and hormonal.