Principles of Anatomy and Physiology
16th Edition
ISBN: 9781119662792
Author: Tortora, Gerard J., DERRICKSON, Bryan H.
Publisher: WILEY
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Question
Chapter 27, Problem 4CP
Summary Introduction
To review:
The ways in which osmolarity of the body fluid is regulated by atrial natriuretic peptide (ANP), aldosterone, and antidiuretic hormone (ADH).
Introduction:
Sweating and exhalation are the routes through which the water and solutes are lost from the body. However, the main route for solute and water loss is in urine. The loss of water results in increased osmolarity of the blood and this is regulated by the hormones aldosterone, ANP, and ADH.
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Chapter 27 Solutions
Principles of Anatomy and Physiology
Ch. 27 - Prob. 1CPCh. 27 - Prob. 2CPCh. 27 - 3. By what mechanism does thirst help regulate...Ch. 27 - Prob. 4CPCh. 27 - What factors control the movement of water between...Ch. 27 - 6. What are the functions of electrolytes in the...Ch. 27 - Name three important extracellular electrolytes,...Ch. 27 - Prob. 8CPCh. 27 - Prob. 9CPCh. 27 - What are the principal physiological effects of...
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- A. Maintenance of fluid balance is important for the survival of humans. How does antidiuretic hormone and aldosterone contributes to the maintenance of fluid balance?(ii) High blood pressure can result from increased sodium concentration of plasma. What is the main hormone involved in regulation of sodium and how does it affect the sodium content of blood?(iii) Compare intracellular fluid to extracellular fluid in terms of their chemical composition of proteins, sodium and potassium.(b) Explain the morphological changes that will occur and the driving force when red blood cells are place in (i) 2.0 % sodium chloride solution (ii) 0.9 % sodium chloride solution (iii) 0.01 % sodium chloride solution 1. What are the 4 causes of subarachnoid hemorrhage? 2. State the factors involved in congenital berry or saccular aneurysm 3. Mention 5 specific brain tumors that you know. 4. What is dura mater, arachnoid matter and pia matter? 5. What is meningioma 6. What is acute subdural hematoma 7.…arrow_forward1. There is a medical condition called Syndrome of Inappropriate Anti-Diuretic Hormone (SIADH) secretion, which can occur as a result of head trauma. Patients with this condition retain water and present with a volume imbalance. A) Name the type of volume imbalance and accompanying direction of changes in ICF and ECF volumes and osmolality. B) Calculate the changes in osmolality and volumes of extracellular and intracellular fluid compartments if 3 liters of water are retained by a patient with SIADH. You can assume that the patient’s initial volumes were ECF=14 L, ICF=28 L. And his initial body osmolality = 290 mOsM. Remember that the total solute in the ICF compartment is kept in place by the cell membrane barrier.arrow_forwarda) What happens to plasma osmolarity when there is excessive water loss through sweating and it is not replaced? b) Describe the actions of natriuretic peptides, how is it activated and where are releasedarrow_forward
- 87. A patient develops increased thirst and urinary frequency shortly after head trauma. If ADH (vasopressin) deficiency is the cause, which of the following changes in osmolality is expected? Osmolality Plasma ↑ ↓ O O O O Urine A) ↑ B) ↑ ↓ ↓arrow_forwardWhat three major hormones affect fluid and electrolyte balance? What are the primary effects of each hormone?arrow_forward5. During an in vitro experiment studying aldosterone secretion, an isolated adrenal gland is perfused with various concentrations of potassium and angiotensin II Which of the following combinations of potassium and angiotensin II will cause the greatest increase in aldosterone secretion? Angiotensin II Potassium Increased Increased Increased Normal Normal Normal Decreased Decreased OA) OB) OC) D) DE) QF) G) H) ) Decreased increased unchanged decreased increased unchanged decreased increased unchanged decreasedarrow_forward
- Why does inhibition of ADH result in increased serum osmolarity?arrow_forwardWhat effect does atrial natriuretic hormone (ANH) haveon extracellular fluid volume?arrow_forward50. During an in vitro experiment studying aldosterone secretion, an isolated adrenal gland is perfused with various concentrations of potassium and angiotensin II. Which of the following combinations of potassium and angiotensin II will cause the greatest increase in aldosterone secretion? Angiotensin II Į ( A) B) C) D) E) F) G) H) 1) Potassium Increased Increased Increased Normal Normal Normal Decreased Decreased Decreased increased unchanged decreased increased unchanged decreased increased unchanged decreasedarrow_forward
- What is the normal osmolarity of extracellular fluid?arrow_forwardWhat is the function of sodium ion in the body?arrow_forwardSelect the best answer or answers from the choices given: Which of the following is/are true about ADH? (a) It promotes obligatory water reabsorption, (b) it is secreted in response to an increase in extracellular fluid osmolality, (c) it causes insertion of aquaporins in the PCT, (d) it promotes Na+ reabsorption.arrow_forward
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