What Structural Modification Of Certain Tubule Cells


What Structural Modification Of Certain Tubule Cells?

Rio Salado A & P Chapt Urinary Flash
Question Answer
What structural modification of certain tubule cells enhances their ability to reabsorb substances from the filtrate? Their possession of dense microvilli (especially the PCT cells).

What structure is the site for tubular reabsorption?

Reabsorption occurs in the proximal convoluted tubule loop of Henle distal convoluted tubule and to a lesser degree the collecting ducts. Various portions of the nephron differ in their capacity to reabsorb water and specific solutes.

Which renal tubule structure is the site of tubular secretion?

In humans and other vertebrates tubular secretion occurs in the kidneys where the blood is filtered in specialized structures known as nephrons. These structures consist of a long tubule surrounded by extensive capillaries.

What change would you expect to occur in a urine sample that has been stored at a room temperature?

Changes when urine left for a longer period of time at room temperature:
Urine Substance Changes taking place
Turbidity This will increase
Odor This will be foul-smelling/increased
Cast Decreased or disappeared
Glucose It is decreased

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What structure is responsible for filtration?

The nephron is responsible for filtration excretion and resorption.

What structure connects the proximal convoluted tubule to the distal convoluted tubule?

glomerulus: A small intertwined group of capillaries within a kidney’s nephron that filters the blood to make urine. loop of Henle: A structure in a kidney’s nephron that connects the proximal convoluted tubule to the distal convoluted tubule.

What is structure of nephron?

The nephron is the minute or microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and a cup-shaped structure called Bowman’s capsule. The renal tubule extends from the capsule.

Which structure is not part of the renal tubule?

The collecting duct is not part of the renal tubule. Instead it funnels the filtrate out of the renal tubule into further structures which leads to the excretion of urine out of the body.

What is function of distal tubule?

The distal convoluted tubule (DCT) is a short nephron segment interposed between the macula densa and collecting duct. Even though it is short it plays a key role in regulating extracellular fluid volume and electrolyte homeostasis.

What structure maintains water and electrolyte balance of the blood?

One lies… read more by filtering electrolytes and water from blood returning some to the blood and excreting any excess into the urine. Thus the kidneys help maintain a balance between daily consumption and excretion of electrolytes and water.

What happens to urine when refrigerated?

Refrigeration can result in the precipitation of urates or phosphates which may obscure other pathologic constituents in the microscopic examination of the urine sediment. According to NCCLS If the urine is also to be cultured it should be refrigerated during transit and held refrigerated until cultured.

Why do urine specimens become alkaline and cloudy?

Abnormal: Cloudy urine can be caused by pus ( white blood cells) blood ( red blood cells) sperm bacteria yeast crystals mucus or a parasite infection such as trichomoniasis.

Which three structures enter exit the kidney at the hilum?

The hilum of the kidney is the site of entry and exit for renal artery renal vein and ureter.

What nephron structures are involved in filtration?

nephron structures involved in filtration are glomerular capillaries the dense layer and the filtration slits of the podocytes.

Which part of nephron structure filters the blood?

Each nephron includes a filter called the glomerulus and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood and the tubule returns needed substances to your blood and removes wastes.

What structure receives blood from the efferent Arteriole of a Juxtamedullary nephron?

Cortical nephrons are responsible for producing concentrated urine. What structure receives blood from the efferent arteriole of a juxtamedullary nephron? The efferent arteriole of a juxtamedullary nephron carries blood to the vasa recta.

Which structure is composed of a proximal convoluted tubule?

Kidneys and Ureters

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Each nephron is composed of a renal corpuscle (glomerulus within Bowman’s capsule) a proximal tubule (convoluted and straight components) an intermediate tubule (loop of Henle) a distal convoluted tubule a connecting tubule and cortical outer medullary and inner medullary collecting ducts.

What is proximal convoluted tubule?

Definition of proximal convoluted tubule

: the convoluted portion of the vertebrate nephron that lies between Bowman’s capsule and the loop of Henle and functions especially in the resorption of sugar sodium and chloride ions and water from the glomerular filtrate. — called also proximal tubule.

How is the proximal convoluted tubule different from the distal convoluted tubule?

Proximal tubule has an irregular or star shaped lumen. In contrast distal tubule has perfectly round lumen. Proximal tubule connects the Bowman’s capsule and nephron loop (loop of Henle) whereas distal tubule connects nephron loop and collecting duct.

What is the function of tubule of nephron?

The function of the proximal tubule is essentially reabsorption of filtrate in accordance with the needs of homeostasis (equilibrium) whereas the distal part of the nephron and collecting duct are mainly concerned with the detailed regulation of water electrolyte and hydrogen-ion balance.

Why nephron is called structural and functional unit of kidney?

A. 1) Each kidney is made up of more than one million microscopic and thin tubular units called nephrons or uriniferous tubules. Hence nephron is known as structural unit of kidney. … Hence it is known as functional unit of kidney.

What is a tubule in the kidney?

Listen to pronunciation. (REE-nul TOO-byool) One of millions of tiny tubes in the kidneys that returns nutrients fluids and other substances that have been filtered from the blood but the body needs back to the blood. The remaining fluid and waste in the renal tubules become urine.

Which of the following structures are part of the renal tubule?

proximal convoluted tubule (red: found in the renal cortex) loop of Henle (blue: mostly in the medulla) distal convoluted tubule (purple: found in the renal cortex) collecting tubule (black: in the medulla)

Is not a part of tubule in nephron?

The renal tubule consists of PCT DCT Henle’s loop and collecting duct. Thus out of the given options none of the option is correct. All are parts of the nephron.

What type of cells are found within the tubules?

The cells that are found within the tubules are cuboidal epithelial cells. Tubules usually refer to the kidney tubules (renal tubules) or ducts of…

Which structure does the distal convoluted lead to?

The proximal convoluted tubule leads to the loop of Henle. This then leads to the distal convoluted tubule. The distal convoluted tubule then leads to the collecting duct.

What is reabsorbed in distal convoluted tubule?

The distal convoluted tubule and collecting ducts are then largely responsible for reabsorbing water as required to produce urine at a concentration that maintains body fluid homeostasis.

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What is the function of proximal convoluted tubule?

The function of the PCT is to reabsorb most of the filtered Na+ ions in order to deliver only a small quantity of Na+ ions to downstream sites these latter sites can then adjust their rate of reabsorption of Na+ ions to achieve balance for this cation in the steady state.

Which structure is a hollow muscular sac?

The urinary bladder

The urinary bladder is a hollow muscular and elastic organ that stores urine. Urine exits the bladder and the body through the urethra. The kidneys ureters bladder and urethra make up the urinary tract the pathway through which urine flows and is eliminated from the body.

How do the kidneys assist the body in maintaining homeostasis in terms of blood pressure?

The kidneys maintain homeostasis by controlling the amount of water ions and other substances in the blood. Kidneys also secrete hormones that have other homeostatic functions.

What element regulates the amount of body fluid?

Electrolytes play a vital role in maintaining homeostasis within the body. They help regulate myocardial and neurological function fluid balance oxygen delivery acid-base balance and other biological processes.

What is a albuminuria?

What is albuminuria? Albuminuria is a sign of kidney disease and means that you have too much albumin in your urine. Albumin is a protein found in the blood. A healthy kidney doesn’t let albumin pass from the blood into the urine.

How can I pee faster?

If you do have to force yourself here are 10 strategies that may work:
  1. Run the water. Turn on the faucet in your sink. …
  2. Rinse your perineum. …
  3. Hold your hands in warm or cold water. …
  4. Go for a walk. …
  5. Sniff peppermint oil. …
  6. Bend forward. …
  7. Try the Valsalva maneuver. …
  8. Try the subrapubic tap.

What is dipstick heme?

Heme. “Blood” on the dipstick represents the reaction observed when the “peroxidase-like” activity inherent in molecules of heme (iron within a porphyrin ring) reacts with a peroxidase substrate in the pad. Heme is found within hemoglobin (free in the urine or within erythrocytes) or myoglobin.

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