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Exam 5: Principles of Endocrinology: The Central Endocrine Glands

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Question 91

True/False

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Plasma concentrations of a hormone are normally regulated by changes in secretion rate.

A) True
B) False

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Question 92

Multiple Choice

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Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.) -secretes MSHs in humans

A) applies to the posterior pituitary
B) applies to the anterior pituitary
C) applies to both the posterior and the anterior pituitary

D) A) and C)
E) All of the above

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Question 93

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The hypothalamus is the highest integrative centre in the hierarchical chain of command in endocrine control.

All hormones are synthesized by the endoplasmic reticulum-Golgi complex system.

Match the hormones, labelled a. through f., with their activities. (Options may be used more than once or not at all.) -stimulates somatomedin secretion by the liver

Which of these circumstances results in somatomedins being released from the liver

A "primary" defect in an endocrine system means that the defect is at the hypothalamus.

Match the systems, labelled a. through c. with their characteristics. (Options may be used more than once or not at all.) -Pancreas has ductless cells that secrete.

Transmission of nerve impulses from the hypothalamus to the anterior pituitary causes the stored hormones to be released.

With down regulation, one hormone induces the loss of another hormone's receptors.

Once synthesized, all hormones are stored within the endocrine cell until an appropriate signal arrives for their release.

Which of these activities happens in a short-loop, negative-feedback, control system

What does excessive growth hormone secretion in an adult lead to

The cells of Leydig secrete ICSH.

Chondrocytes are bone cells that are affected by the growth hormone.

Match the hormones, labelled a. through f., with their activities. (Options may be used more than once or not at all.) -responsible for ovulation

Estrogens, testosterone, cortisol, and aldosterone are derivatives of which molecular precursor

One of the effects of the growth hormone is the control of fat metabolism.

Compare and contrast the receptor and postreceptor events for lipophilic and hydrophilic hormones.

All the blood supply to the anterior pituitary gland must first pass through the ____________________ of the brain.