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Exam 17: Endocrine System

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Question 31

Multiple Choice

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-This figure shows the endocrine system.Which structure does number 4 indicate

A) Adrenal gland
B) Thyroid gland
C) Pituitary gland
D) Pancreas
E) Hypothalamus

F) A) and B)
G) A) and C)

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Question 32

Multiple Choice

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Intracellular signaling pathways within target cells are organized such that

A) each step allows for amplification of the signal where one molecule can activate many.
B) each step involves one molecule activating or synthesizing exactly one other molecule for precise control.
C) enzymes are used up and degraded after each individual reaction they catalyze.

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

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Question 33

Multiple Choice

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Growth hormone is secreted by __________ cells in the anterior pituitary.

The pancreas has both endocrine and exocrine functions.

Parathyroid hormone release depends on blood levels of calcium.Such an endocrine reflex is said to be initiated by

Modified amino acids that act as hormones are referred to as ________ amines.

Until thyroid hormone needs to be secreted,precursors to it are stored in a viscous,protein-rich fluid within the center of thyroid follicles.This viscous fluid is known as _________.

Which region of the adrenal cortex synthesizes glucocorticoids

The binding of a hormone and a carrier protein is _______;a very ______ fraction of such a hormone in the blood is bound to a carrier at any one point in time.

Within the adenylate cyclase signal transduction pathways of target cells,cAMP activates

As someone starts to develop in puberty,most cells in their reproductive organs are probably starting to express

The hormone oxytocin is synthesized in the

The pancreas is located ________ to the stomach,and it lies between the duodenum and the ________.

The liver contains endocrine cells.

Which hormone induces its target cells to take up glucose,thereby lowering blood glucose levels

When eicosanoids bring about cellular changes within the cell from which they were formed,the process is called _________ stimulation.

You are "shadowing" an endocrinologist who is examining a patient complaining of weakness,weight loss,and heat intolerance.The doctor points out the patient's obvious exophthalmos and asks for your diagnosis.What would you speculate is the patient's problem

Which of the following is false

The function of each of the regulatory hormones of the hypothalamus is to trigger the release of a tropic hormone from the pituitary.

Generally,there are two main factors that determine the levels of a hormone in the blood.Explain what those factors are and provide examples of how they might increase or decrease a hormone's level.