Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 25, Problem 19RQ
Vasodilation of blood vessels to the kidneys is due to ________.
- more frequent action potentials
- less frequent action potentials
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Vasoconstriction of the renal arteries (arteries supplying blood to kidneys) would decrease blood flow to the kidneys. True or False
Filtration pores are characteristic of _____capillaries.
Vasodilation is a widening of the lumen of a blood vessel due to smooth muscle relaxation.
True
False
Chapter 25 Solutions
Anatomy & Physiology
Ch. 25 - Diabetes insipidus or diabetes mellitus would most...Ch. 25 - The color of urine is determined mainly by...Ch. 25 - Production of less than 50 mL/day of urine is...Ch. 25 - Peristaltic contractions occur in the ________....Ch. 25 - Somatic motor neurons must be ________ to relax...Ch. 25 - Which pan of the urinaiy system is not completely...Ch. 25 - The renal pyramids are separated from each other...Ch. 25 - The primary structure found within the medulla is...Ch. 25 - The right kidney is slightly lower because...Ch. 25 - Blood filtrate is captured in the lumen of the...
Ch. 25 - What are the names of the capillaries following...Ch. 25 - The functional unit of the kidney is called...Ch. 25 - ________ pressure must be greater on the capillary...Ch. 25 - Production of urine to modify plasma makeup is the...Ch. 25 - Systemic blood pressure must stay above 60 so that...Ch. 25 - Aquaporin channels are only found in the...Ch. 25 - Most absorption and secretion occurs in this part...Ch. 25 - The fine tuning of water recovery or disposal...Ch. 25 - Vasodilation of blood vessels to the kidneys is...Ch. 25 - When blood pressure increases, blood vessels...Ch. 25 - Which of these three paracrine chemicals cause...Ch. 25 - What hormone directly opposes the actions of...Ch. 25 - Which of these is a vasoconstrictor? nitric oxide...Ch. 25 - What signal causes the heart to secrete atrial...Ch. 25 - Which of these beverages does not have a diuretic...Ch. 25 - Progesterone can bind to receptors for which...Ch. 25 - Renin is released in response to ________....Ch. 25 - Which step in vitamin D production does the kidney...Ch. 25 - Which hormone does the kidney produce that...Ch. 25 - If there were no aquaporin channels in the...Ch. 25 - What is suggested by the presence of white blood...Ch. 25 - Both diabetes mellitus and diabetes insipidus...Ch. 25 - Why are females more likely to contract bladder...Ch. 25 - Describe how forceful urination is accomplished.Ch. 25 - What anatomical structures provide protection to...Ch. 25 - How does the renal poital system differ from the...Ch. 25 - Name the structures found in the renal hilum.Ch. 25 - Which structures make up the renal corpuscle?Ch. 25 - What are the major structures comprising the...Ch. 25 - Give the formula for net filtration pressure.Ch. 25 - Name at least five symptoms of kidney failure.Ch. 25 - Which vessels and what pail of the nephron are...Ch. 25 - Give the approximate osmolarity of fluid in the...Ch. 25 - Explain what happens to Na+ concentration in the...Ch. 25 - If you want the kidney to excrete more Na+ in the...Ch. 25 - What organs produce which hormones or enzymes in...Ch. 25 - PTH affects absorption and reabsorption of what?Ch. 25 - Why is ADH also called vasopressin?Ch. 25 - How can glucose be a diuretic?Ch. 25 - How does lack of protein in the blood cause edema?Ch. 25 - Which three electrolytes are most closely...
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- Lower-than-normal blood pressure is called _______________________.arrow_forwardVasodilation of blood vessels to the kidneys is due to________.a. more frequent action potentialsb. less frequent action potentialsarrow_forwardThe vessel layer that has a direct role in vasoconstriction is the __________. A tunica intima B tunica externa C tunica mediaarrow_forward
- Describe filtration and absorption happens in the capillary beds in relation to solute concentrations in the extracellular fluid and inside the capillaryarrow_forwardThe blood pressure gradient from the aorta to the capillaries is less than the blood pressure gradient from the arterial end of the capillary to the venous end of the capillary. True or Falsearrow_forwardSystemic vasoconstriction decreases blood pressure. True or Falsearrow_forward
- Drugs known as calcium channel blockers prevent Ca++ movement through Ca++ channels. Explain two ways that this action can lower blood pressure. Why are neurons and other cells unaffected by these drugs?arrow_forwardIf someone had a drop in their blood pressure the myogenic mechanism would respond by stimulating of the afferent arteriole. Select one: O a. vasodilation O b. vasoconstrictionarrow_forwardThe presence of __________ stabilizes the wall of arterioles and capillaries. A gap junctions B elastic fibers C valves D pericytesarrow_forward
- The ANS regulation of blood pressure is involuntary, yet biofeedback techniques enable individuals to reduce their pulse rate and blood pressure. Explain how this occurs.arrow_forwardThe greater the pulse pressure, the lower the pressure gradient driving blood from the aorta through the systemic circulation. True or Falsearrow_forwardThe release of substances by vascular endothelial cells, which act on the smooth muscle surrounding the vessel would be an example of a mechanism of action. endocrine O paracrine O autocrine exoocrinearrow_forward
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