Introduction:
Want to see the full answer?
Check out a sample textbook solutionChapter 23 Solutions
Anatomy and Physiology
- Blood pressure forces water and small solutes out of blood and into nephrons during ________. a. glomerular filtration c. tubular secretion b. tubular reabsorption d. both a and carrow_forwardWhich of the following does not contribute to the process of filtration? (a) active transport by epithelial cells lining renal tubules (b) large surface area for filtration (c) low permeability of glomerular capillaries (d) high hydrostatic blood pressure in glomerular capillaries (e) podocytesarrow_forwardWhich of the following does not contribute to the high salt concentration in the interstitial fluid of the kidney medulla? (a) active transport of sodium from the upper part of the ascending limb (b) diffusion of salt from the ascending limb of the loop of Henle (c) reabsorption of salt from various regions of Bowmans capsule (d) counterflow of fluid through the two limbs of the loop of Henle (e) diffusion of urea out of the collecting ductarrow_forward
- Explain how changes in the osmotic pressure of blood plasma affect the glomerular filtration rate.arrow_forwardPropose several ways to decrease the GFR.arrow_forwardWhich of the following describes why a very low GFR is not beneficial? a. Too many substances including wastes will be reabsorbed due to the reduced flow b. Filtered substances will pass by too quickly to be adequately reabsorbed c. There will be insufficient secretion of substances in the peritubular capillaries d. A low GFR is always beneficialarrow_forward
- Characterize the roles of each of the parts of the urinary system. (Kidneys, nephrons, ureters, urinary bladder, and urethra). Trace the flow of blood through the kidney and describe how blood is filtered in the kidney nephron.arrow_forwardMany systems of the body work together to achieve homeostasis. Identify ONE part of the nephron that interacts with the endocrine system, and explain how these 2 systems work together to maintain osmoregulationarrow_forwardMake a sketch of ONE complete Nephron in the kidney and label to show the blood flow (mark with red) and urine flow in this nephron (you can also use arrow to indicate flow direction). Remember only ONE nephron in your kidney. show the correct location of this nephron (Cortical vs. Juxtamedullary Nephrons) in the entire kidney. show the correct blood tubings within the nephron (I should be able to tell afferent and efferent arteriole from your sketch; also your nephron is closely associated with two capillary bed )arrow_forward
- e The excretory system regulates the volume and composition of body fluids by removing wastes and returning useful substances to the body. Some of the characteristics of the excretory organs are given below. 1. Carries urine to the bladder 2. Stores urine 3. Eliminates urine from the body 4. Composed of nephrons Put the numbers of the above characteristics in order, so they correspond to the urinary bladder, the ureters, the kidneys, and the urethra. (Your answer should look like 1234, but that isn't the right order.) Answer: Next page OFarrow_forwardpick one and say why during reabsorption:1. solutes, such as ions and molecules, travel from the distal tubule to the proximal tubule 2. solutes, such as ions and molecules, are dumped into the nephron in a “last call” before reaching the collecting duct 3. solutes, such as ions and molecules, are drawn across into the nephron by ADH increasing the poricity of the nephron 4. solutes, such as ions and molecules, are pulled into the bloodstream by various methods of transportarrow_forwardWhy can’t the kidneys just excrete the filtered plasma without adjusting it’s content?arrow_forward
- Essentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning