Concept explainers
Introduction:
Hormones are chemical messengers secreted by glands into the extracellular fluids. The secreted hormones reach the target cells through the bloodstream and they stimulate the response of other tissues or cells. Hormones bind only to specific cells based on their corresponding receptors present on cells and they act through chemical signals. They regulate growth, development, blood pressure,
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Chapter 17 Solutions
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- is it true that neurotransmitters can act as hormones as well as stimulate the release of hormones as well as stimulate the release of hormones?arrow_forwardWhat are the major functional differences between the endocrine and the nervous system?arrow_forwardIf the pituitary is so important, and if Eric is not getting replacements of hormones the pituitary makes (except for adh), why isn’t he dead? To answer this question, think through the cascade of events from hypothalamus to effect Is it because the hypotalamus secretes it to the blood stream directly? May I have an explanation? I'm trying to understand so that I can answer this question properlyarrow_forward
- The hypothalamic-pituitary portal is categorized as the "local bloodstream." How does this compare to the "general bloodstream" of the posterior pituitary? a) The local bloodstream connects the hypothalamus and the posterior pituitary whereas the general bloodstream connects the pituitary and the rest of the body. b) The local bloodstream connects the hypothalamus and the anterior pituitary whereas the general bloodstream connects the pituitary and the rest of the body. c) There is no distinction between the two.arrow_forwardWhich part of the pituitary—anterior or posterior—is neural tissue, similar to the hypothalamus? Which part is glandular tissue and produces hormones that control the secretions by other endocrine organs?arrow_forwardWhich of the following correctly describes a difference between the posterior and anterior pituitary? a the hypothalamus influences the activity of the posterior pituitary but not the anterior pituitary b anterior pituitary hormones are released into blood, the posterior pituitary hormones are not c the anterior pituitary consists of endocrine cells, while the posterior pituitary consists of neural cells d the posterior pituitary relies on a portal system of blood circulation, the anterior does notarrow_forward
- What is the key difference between the way the hypothalamus communicates with the anterior pituitary and the way it communicates with the posterior pituitary?arrow_forwardIn what respect is the pituitary gland actually two glands?arrow_forwardWhat do the pituitary, thyroid and adrenal glands all have in common?arrow_forward
- Which statement best describes the relationship between the Endocrine and Nervous Systems? Both systems work with the Urinary System to maintain acid-base balance in the blood Both systems regulate hair growth, temperature regulation, and hydration Both systems modulate the stress response, sleep/wake cycles, and metabolism Both systems work with the Urinary System to activate Vitamin Darrow_forwardThere is a significant difference between the lobes of the pituitary gland. Select ALL that apply, The neurohypophysis is significantly larger than the adenohypophysis The adenohypophysis is glandular and ductless. The neurophypophysis is not. The neurohypophysis is an elongation of the hypothalamus. The adenohypophysis produces prolactin which is stimulated by dopamine. The adenohypophysis produces prolactin which is inhibited by dopamine.arrow_forwardAlthough the pituitary gland is often referred to as the master gland of the body, the hypothalamus exerts some control over the pituitary gland. How does the hypothalamus control both anterior and posterior pituitary functioning?arrow_forward
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