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Exam 13: The Endocrine System

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Question 31

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The endocrine and nervous systems function to coordinate and regulate the activities of cells and tissues throughout the body. To achieve these types of control, both systems rely on chemical agents, but the chemicals function differently at the cellular level. Describe the functional differences between hormones and neurotransmitters.

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Hormones travel through blood over long ...

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Question 32

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Nitric oxide helps regulate blood flow in many tissues and is involved in the development and control of penile erection.

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Question 33

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Somatostatin functions to inhibit both insulin and glucagon.

Match each event labeled on the graph with the description of what is occurring in relation to blood glucose levels. -adipose tissues use glucose to produce fats for storage

The alpha, beta, and delta cells located in the islets of Langerhans of the thyroid produce three different hormones that are important in the regulation of sodium and potassium levels of the blood.

Using the figure above, identify each endocrine gland (A-G). -pancreas

FSH is a hormone important to the proper functioning of the ovaries and testes. This hormone will not be released from the anterior pituitary until ________ is released from the hypothalamus.

Which one of the following parts of the brain links to the endocrine system?

The responsiveness of cells to calcitonin increases as an individual ages; maximum responsiveness occurs in elderly individuals as a mechanism to improve the stability and strength of bones.

Erythropoietin, a hormone secreted by the liver, stimulates red blood cell production in the bone marrow.

Nonsteroid hormones cannot cross the plasma membrane of cells, yet still have the ability to influence cell activity. Explain how this is possible.

Hormones from the anterior pituitary gland are secreted in response to the presence of ________ from the hypothalamus.

Which one of the following is caused by the secretion of atrial natriuretic hormone by the heart?

The ovaries of women function as endocrine organs by producing

Thyroxine is released from the thyroid gland in response to the presence of

The effect of parathyroid hormone is to ________ blood calcium levels.

Insulin helps regulate blood sugar levels by stimulating the release of glucose from glycogen stores.

Hormones important in maintaining homeostasis are generally part of a(n) ________ feedback loop.

Match each of the following hormones to its function.

Steroid hormones bind to receptors in the nucleus to activate or deactivate genes.