Exam 18: Principles of Endocrinology - the Central Endocrine Glands

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Primary hyposecretion takes place when an endocrine gland is normal but is secreting too little hormone because of a deficiency of its tropic hormone.​

(True/False)
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The axons of the neurosecretory neurons that produce the hypothalamic regulatory hormones terminate on the __________ at the origin of the portal system.​

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Sex steroids are potent growth stimulators and contribute to the pubertal growth spurt,but they ultimately stop further growth by closing the epiphyseal plates.​

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Growth hormone promotes growth of soft tissues by __________ and hyperplasia.

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What are the bone cells that dissolve the bony tissue?​

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What is the most abundant hormone produced by the anterior pituitary?

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A tropic hormone's actions aimed at maintaining the structural integrity of its target gland are specifically known as __________ actions.

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Growth hormone uses up fat stores and promotes synthesis of body proteins,so it encourages a change in body composition away from adipose deposition toward an increase in muscle.​

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Norepinephrine is classified as a(n):​

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In a growing bone,the diaphysis is separated at each end from the epiphysis by a layer of cartilage known as the __________.​

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The two biggest self-prescribed uses of melatonin are as prevention for the common cold and as a reproductive aid.​

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The master biological clock that serves as the pacemaker for the body's circadian rhythms is the suprachiasmatic nucleus (SCN).​

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What is the shape of the pineal gland?​

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What endocrine gland secretes melatonin?​

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Lactotropes secrete prolactin (PRL),which enhances breast development and lactation in females.​

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Figure 18-3 Use the figure above (Figure 18-3)to answer the corresponding questions.​ Figure 18-3 Use the figure above (Figure 18-3)to answer the corresponding questions.​    -Which number in the figure represents the optic chiasm?​ -Which number in the figure represents the optic chiasm?​

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Unlike other regions of the brain,portions of the hypothalamus are not guarded by the blood-brain barrier,so the hypothalamus can easily monitor chemical changes in the blood.​

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Some endocrine control systems include both feedback control (which maintains a constant basal level of the hormone)and neuroendocrine reflexes (which cause sudden bursts in secretion in response to a sudden increased need for the hormone).

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Where are indoleamines produced?​

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What is the main nutrient needed in order to synthesize thyroid hormone?​

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