Pharmacology and the Nursing Process, 8e
Pharmacology and the Nursing Process, 8e
8th Edition
ISBN: 9780323358286
Author: Linda Lane Lilley PhD RN, Shelly Rainforth Collins PharmD, Julie S. Snyder MSN RN-BC
Publisher: Elsevier Science
Question
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Chapter 33, Problem 1O
Summary Introduction

To discuss:

The normal physiology, anatomy, and related functions of the adrenal glands, including the specific hormones that are released from the glands.

Introduction:

The adrenal glands are the endocrine glands that synthesize a variety of hormones. It is located above each kidney like a cap. It is also called suprarenal glands.

Expert Solution & Answer
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Explanation of Solution

The adrenal gland is made up of two distinct parts, namely the adrenal medulla and adrenal cortex. They functionally and structurally differ from each other. The adrenal cortex is the outer layer and is made up of endocrine tissues. The adrenal medulla is the inner layer and is made up of both the endocrine and neurosecretory tissues. Each adrenal gland secretes two different hormones.

The hormones secreted by the adrenal cortex are also referred to as corticosteroids as it has the chemical structure of steroids. The corticosteroids are of two types, namely glucocorticoids and mineralocorticoids. The regulation of electrolytes in the body is carried out by the mineralocorticoids. It maintains the sodium homeostasis in the blood. It also influences the potassium and pH levels of the blood. It controls the blood pressure. The glucocorticoids affect the metabolism of proteins, fats, and carbohydrates. The natural glucocorticoid that was secreted by the adrenal gland is the cortisol. It regulates the anti-inflammatory actions, stress effects, and blood pressure.

The hormones secreted by the adrenal medulla are epinephrine and norepinephrine. They are referred to as catecholamines. Epinephrine is also known as adrenaline. It is an emotion causing hormone. It increases the muscle strength, heart rate, blood pressure, and sugar metabolism. Norepinephrine is also known as noradrenaline. During rest, it increases the blood pressure and heart rate of the body, increases the blood flow to the muscles, and decreases the blood flow the GI system.

Conclusion

The anatomy, functions, and physiology including the hormones secreted by the adrenal glands are discussed.

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