Glomerular filtration, tubular reabsorption, and tubular secretion Complete the following paragraph to describe the role of glomerular filtration, tubular reabsorption, and tubular secretion in urine formation. During ___________ , blood enters the glomerulus and small molecules move from the blood to the ___________ . These molecules include ___________ , which together are know as the glomerular ___________ . Because ___________ are too large, they remain in the blood. During ___________ , sodium ions are ___________ transported into the peritubular capillary and chloride ions are ___________ transported behind them. This creates a difference in concentration so that ___________ passively diffuses from the peritubular capillary into the blood. During ___________ , more substances are removed from blood and added to tubular fluid. These substances include ___________ and they are secreted ___________ . glomerular capsule water, salt, and nutrients serum actively water passively glomerular filtration tubular reabsorption tubular secretion filtrate uric acid, ammonia, creatine, and histamine ureter plasma proteins and blood cells Reset
Added by Randy A.
Close
Step 1
Glomerular filtration is the first step in urine formation where blood enters the glomerulus within the glomerular capsule. Here, small molecules such as water, salt, and nutrients move from the blood into the tubular fluid. This process filters out wastes while Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 58 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
is dependent on which causes interstitial fluid to be hypertonic to the filtrate. is a process in which useful, dissolved substances are moved from the filtrate into peritubular capillaries. takes place along all renal tubule locations, but most takes place in the proximal convoluted tubules. adds additional nitrogen-containing waste solutes, such as urea, into the filtrate. depends on the secretion of antidiuretic hormone (ADH). takes place across the walls of the glomeruli. may be controlled, in part, by the finger-like extensions of podocytes. is a process in which blood pressure forces water and some dissolved substances out of the blood into the glomerular capsule.
Madhur L.
4. The kidneys are made of hundreds of structures called, __________ that filter the blood and form__________, which is waste water and waste solutes. A nephron consists of __________ and associated __________ vessels. The process of urine formation begins with __________ filtration, which filters protein-free filtrate from the __________ capillaries into the glomerular __________. During tubular __________, 100% of the filtered __________, amino acids, and bicarbonate and 50% of __________ is reabsorbed from the __________ tubule back into the __________ capillaries. Lastly, during tubular __________, ions such as H+, and __________ are secreted from the peritubular __________ into the __________. 5. Match the following structures with the correct definition/description. 1. Afferent arteriole ___ 1. Leaky capillary network of a nephron 2. Efferent arteriole ___ 2. The outer portion of the kidney 3. Glomerulus ___ 3. Arterioles that exit the glomerulus 4. Loop of Henle ___ 4. Area of a kidney where newly formed urine collects 5. Renal cortex ___ 5. Arterioles that enter the glomerulus 6. Renal medulla ___ 6. U-shaped portion of a nephron 7. Renal pelvis ___ 7. Inner portion of the kidney made up of renal pyramids
Sri K.
Kidney Dialysis Hemodialysis, a method of removing waste products from the blood if the kidneys have failed, uses a tube made of a cellulose membrane that is immersed in a large volume of aqueous solution. Blood is pumped through the tube and is then returned to the patient's vein. The membrane does not allow passage of large protein molecules and cells but does allow small ions, urea, and water to pass through it. Assume that a physician wants to decrease the concentration of sodium ion and urea in a patient's blood while maintaining the concentration of potassium ion and chloride ion in the blood. What materials must be dissolved in the aqueous solution in which the dialysis tube is immersed? How must the concentrations of ions in the immersion fluid compare with those in blood?
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD