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Excretory Products and their Elimination Test 26

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Excretory Products and their Elimination Test 26
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  • Question 1
    1 / -0
    Uriniferous tubules are mainly concerned with
    Solution
    In humans, the Kidney is the excretory organ. Nephron or uriniferous tubule is the structural and functional unit of the kidney. On an average, 25-30 gm of urea is excreted out per day through urine. Hence uriniferous tubules are mainly concerned with removal of urea from the blood.
    So, the correct answer is 'Removal of urea from blood'.
  • Question 2
    1 / -0
    Uriniferous/nephrons tubules occur in
    Solution
    The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into renal corpuscle, proximal convoluted tubule (PCT), Henle's loop and distal convoluted tubule( DCT). The nephrons along with collecting ducts are called as uriniferous tubules. Hence uriniferous/nephrons tubules occur in Kidney,
    So, the correct answer is 'Kidney'.
  • Question 3
    1 / -0
    Which of the following is  present in the kidney?
    Solution
    Glomerulus is present in the nephrons of the kidney. Nephrons are the cells of kidney which are composed of a renal corpuscle and a renal tubule.  The renal corpuscle is also known Malpighian body. It consists of cup like double walled structure known as Bowman’s capsule and the bunch of capillaries present in the Bowman’s capsule is known as glomerulus. So, the correct answer is 'Glomerulus'.
  • Question 4
    1 / -0
    The mechanism of urine formation in nephron involves
    Solution
    The glomerular blood is filtered through the minute pores called filtration slits present in the wall of Bowman's capsule. The filtrate is collected by Bowman's capsule and passed to the proximal convoluted tubule. This phenomenon of filtration of glomerular blood through the filtration slits is called as glomerular filtration. It is also called as ultrafiltration because relatively larger molecules like proteins can not pass through filtration slits. Hence the mechanism of urine formation in nephron involves 'Ultrafiltration'.
    So, the correct answer is 'Ultrafiltration'.
  • Question 5
    1 / -0
    Reabsorption of chloride ions from glomerular filtrate in kidney tubule occurs by
    Solution
    Glomerular filtration is the first step in urine formation. Glomerular blood is filtered through filtration slits present in Bowman's capsule. The Bowman's capsule collects the filtrate and it enters the tubules of the nephron. From the tubules, the chloride ions from the glomerular filtrate are reabsorbed by diffusion. 
    So, the correct answer is 'Diffusion'.
  • Question 6
    1 / -0
    If kidneys fail to reabsorb water, the effect on tissue would
    Solution
    If kidneys fail to reabsorb water, the blood volume is decreased. The concentration of plasma increases and the concentration of urine is decreased. It leads to frequent urination as a result due to dehydration the tissues would shrink and shrivel.
    So, the correct answer is 'Shrink and shrivel'.
  • Question 7
    1 / -0
    Glomerular filtrate contains glucose in comparison to plasma
    Solution
    The glomerular filtrate contains less glucose in comparison to plasma because most of the glucose is actively reabsorbed in the proximal convolutes tubule (PCT) part of the nephron.
    So, the correct answer is 'Less'
  • Question 8
    1 / -0
    Henle's loop is found in
    Solution
    The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into Bowman's capsule, proximal convoluted tubule (PCT), Henle's loop and Distal convoluted tubule( DCT). Hence Henle's loop is found in the Kidney.
    So, the correct answer is 'Kidney'
  • Question 9
    1 / -0
    Nephrons are connected with
    Solution
    Kidney is the major excretory organ in humans. Nephrons are the cells of kidney which are considered as smallest functional unit because it is microscopic structure which actively participates in functions of kidney like blood filtration and osmoregulation. A healthy adult has 0.8 to 1.5 million nephrons in each kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle filters the blood components. The filtrate is transferred to renal tubule for process of tubular secretion and tubular reabsorption which further forms the urine by maintaining its concentration. So the correct answer is 'excretory system'.
  • Question 10
    1 / -0
    Part not belonging to uriniferous tubule is
    Solution
    The nephrons along with collecting ducts are called as uriniferous tubule. The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into  Bowman's capsule, PCT, Henle's loop and DCT. Hence glomerulus does not belong to the uriniferous tubule. Glomerulus are the tuft of capillaries present in the Bowman's capsule.
    So, the correct answer is 'Glomerulus'.
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