Bio 202 Exam 4 Other Parts That Were Unhighlighted

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  • 1/22 Questions

    The activity of the thist center will be increased if

    • The heart releases atrial natriuretic factor ANF
    • Calcium ions are less concentrated in the blood
    • Blood volume is increase
    • Blood osmolarity is increased
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About This Quiz


changed the answers to what im pretty sure is right

Bio 202 Exam 4 Other Parts That Were Unhighlighted - Quiz

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  • 2. 

    Most nutrients are absorbed in the

    • Large intenstine

    • Mouth

    • Stomach

    • Small intestine

    Correct Answer
    A. Small intestine
    Explanation
    The small intestine is responsible for the majority of nutrient absorption in the body. It has a large surface area due to the presence of villi and microvilli, which increase the absorption capacity. The small intestine also produces enzymes and releases bile to break down food into smaller molecules that can be absorbed into the bloodstream. The large intestine mainly absorbs water and electrolytes, while the mouth and stomach primarily play a role in the initial digestion of food.

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  • 3. 

    The counter- current system is composed of

    • The nephron loop and collecting

    • The peritubular capillaries and the collecting duct

    • The collecting duct and the nephron loop

    • The vasa recta and the nephron loop

    Correct Answer
    A. The vasa recta and the nephron loop
    Explanation
    The counter-current system in the kidney refers to the flow of fluid in opposite directions in the nephron loop and the vasa recta. This system allows for efficient reabsorption of water and solutes from the filtrate. The nephron loop creates a concentration gradient in the medulla, which is maintained by the vasa recta. The vasa recta, a network of blood vessels, helps to exchange water and solutes with the medullary interstitial fluid, ensuring the concentration gradient is maintained. Therefore, the correct answer is the vasa recta and the nephron loop.

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  • 4. 

    Glucose is reabsorbed in the proximal tubule BY:

    • Primary active transport

    • Osmosis

    • Secondary active transport

    • Facilitated diffusion

    Correct Answer
    A. Secondary active transport
    Explanation
    Glucose is reabsorbed in the proximal tubule by secondary active transport. Secondary active transport involves the use of a concentration gradient established by primary active transport to drive the movement of glucose across the tubule cells. This process requires the use of carrier proteins that transport glucose against its concentration gradient, using the energy from the movement of another molecule down its concentration gradient. Therefore, glucose reabsorption in the proximal tubule is an example of secondary active transport.

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  • 5. 

    Antidiuretic hormone

    • Is secreted when water intake is too low

    • Regulates acid- base balance

    • Increases bone formation

    • Stimulates the production of large amoounts of urine

    Correct Answer
    A. Is secreted when water intake is too low
    Explanation
    Antidiuretic hormone is secreted when water intake is too low in order to conserve water in the body. This hormone acts on the kidneys to decrease urine production and increase water reabsorption, helping to maintain the body's fluid balance.

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  • 6. 

    Materials are driven out of the glomerulus into the glomerular capsule because of

    • Concentration gradients

    • Osmotic pressure

    • Blood pressure

    • Active transport

    Correct Answer
    A. Blood pressure
    Explanation
    Materials are driven out of the glomerulus into the glomerular capsule because of blood pressure. The glomerulus is a network of capillaries that filters waste products, water, and other substances from the blood. Blood pressure plays a crucial role in this process as it forces the blood through the glomerulus, pushing the filtered materials into the glomerular capsule. This pressure helps to maintain the flow of blood and ensure the filtration of waste products and excess fluids from the bloodstream.

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  • 7. 

    The tube that leads from the kidney to the bladder is the

    • Renal pelvis

    • Urethra

    • Seminal vesicle

    • Ureter

    Correct Answer
    A. Ureter
    Explanation
    The correct answer is ureter. The ureter is the tube that connects the kidney to the bladder. It carries urine from the kidney to the bladder for storage and eventual elimination. The renal pelvis is a part of the kidney where urine collects before entering the ureter. The urethra is the tube that carries urine from the bladder out of the body. The seminal vesicle is a gland that produces semen in males.

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  • 8. 

    The waste product of protein metabolism that is synthesized in the liver is

    • Bile

    • Bilirubin

    • Urea

    • Glycogen

    Correct Answer
    A. Urea
    Explanation
    Urea is the waste product of protein metabolism that is synthesized in the liver. It is formed from the breakdown of amino acids, which are the building blocks of proteins. The liver plays a crucial role in converting ammonia, a toxic byproduct of protein metabolism, into urea. Urea is then transported to the kidneys and excreted in urine. Bile is a substance produced by the liver that aids in digestion. Bilirubin is a yellow pigment formed from the breakdown of red blood cells and is excreted in bile. Glycogen is a storage form of glucose in the liver and muscles.

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  • 9. 

    The ultimate goal of carbohydrate catabolism is to break it down into

    • Lactose

    • Sucrose

    • Glucose

    • Glycogen

    Correct Answer
    A. Glucose
    Explanation
    Carbohydrate catabolism refers to the process of breaking down carbohydrates into smaller molecules to release energy. The ultimate goal of this process is to convert carbohydrates into glucose. Glucose is a simple sugar that can be readily used by cells for energy production through cellular respiration. Lactose and sucrose are complex carbohydrates that need to be further broken down into glucose and other simple sugars before they can be utilized. Glycogen, on the other hand, is a storage form of glucose in animals and is not the end product of carbohydrate catabolism.

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  • 10. 

    The juxtaglomerular apparatus synthesizes

    • Epinephrine

    • Renin

    • Aldosterone

    Correct Answer
    A. Renin
    Explanation
    The juxtaglomerular apparatus is a specialized structure found in the kidney that plays a crucial role in regulating blood pressure and fluid balance. One of its main functions is to synthesize and release renin. Renin is an enzyme that helps control blood pressure by initiating a series of reactions that ultimately lead to the production of angiotensin II, a hormone that constricts blood vessels and stimulates the release of aldosterone. Epinephrine is primarily synthesized in the adrenal glands, while aldosterone is produced by the adrenal cortex. Therefore, the correct answer is renin.

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  • 11. 

    Which of the following functions is accomplished by bile?

    • Emulsification of fats

    • Conversion of fats into glycerol and fatty acids

    • Emulsification of proteins

    • All of the answers are correct

    Correct Answer
    A. Emulsification of fats
    Explanation
    Bile is a substance produced by the liver and stored in the gallbladder, and its main function is to emulsify fats. Emulsification is the process of breaking down large fat globules into smaller droplets, allowing for better digestion and absorption of fats in the small intestine. Bile contains bile salts that act as emulsifying agents, helping to increase the surface area of fat particles and enabling the action of pancreatic enzymes to break down fats into smaller molecules. Therefore, the correct answer is emulsification of fats.

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  • 12. 

    A mystery solute can be detected in fluid in the glomerulus, but not in urine. the solut must be

    • Filtered and reabsorbed

    • Secreted only

    • Reabsorbed but not filters

    • Filtered only

    Correct Answer
    A. Filtered and reabsorbed
    Explanation
    The correct answer is filtered and reabsorbed. This is because the glomerulus is responsible for filtering substances from the blood into the urine. If a mystery solute is detected in the fluid in the glomerulus but not in the urine, it means that the solute has been filtered by the glomerulus but then reabsorbed by the renal tubules before it reaches the urine. This process of filtration and reabsorption allows the body to regulate the balance of substances and maintain homeostasis.

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  • 13. 

    The external uretrhal sphincter is composed of skeletal muscle

    • True

    • False

    • Maybe

    Correct Answer
    A. True
    Explanation
    The external urethral sphincter is composed of skeletal muscle. This is true because the external urethral sphincter is responsible for voluntary control over the release of urine. Skeletal muscles are under conscious control, allowing individuals to contract or relax this sphincter as needed to either hold or release urine.

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  • 14. 

    Aldosterone

    • Stimulates the production of large amounts of urine

    • Is secreted from the pituitary gland

    • Increases sodium retention by the kidney

    • Stimulates first

    Correct Answer
    A. Increases sodium retention by the kidney
    Explanation
    Aldosterone is a hormone that is secreted by the adrenal glands, not the pituitary gland. It plays a crucial role in regulating the balance of sodium and potassium in the body. One of its main functions is to increase sodium retention by the kidney, which helps to maintain proper fluid and electrolyte balance. This ultimately leads to a decrease in urine production.

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  • 15. 

    Filtration of urine takes place in the

    • Calyx

    • Glomerulus

    • Nephron loop

    • Ascending tubule

    Correct Answer
    A. Glomerulus
    Explanation
    The filtration of urine takes place in the glomerulus. The glomerulus is a network of tiny blood vessels called capillaries located in the kidney. It is responsible for the initial filtration of blood, where waste products, excess water, and other substances are filtered out of the bloodstream and into the renal tubules to eventually form urine.

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  • 16. 

    The term specifically describes the fluid that occupies the spaces between cells

    • Filtrate

    • Synovial

    • Intersitial

    • Intracellular

    Correct Answer
    A. Intracellular
    Explanation
    The term "intracellular" specifically describes the fluid that occupies the spaces within cells. It refers to the fluid that is contained within the cell membrane and is separate from the fluid that exists outside of the cells. This fluid plays a crucial role in various cellular processes and is involved in maintaining cell structure and function.

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  • 17. 

    Blood calcium levels are increased by

    • Calcitonin

    • Parathyroid hormone

    • Aldosterone

    Correct Answer
    A. Parathyroid hormone
    Explanation
    Parathyroid hormone increases blood calcium levels by stimulating the release of calcium from bones, increasing the absorption of calcium from the intestines, and reducing the excretion of calcium by the kidneys. This hormone is released by the parathyroid glands in response to low blood calcium levels, and its actions help to maintain the balance of calcium in the body.

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  • 18. 

    Glucose and amino acids are reabsorbed from the glomerular filtrate by

    • The proximal convoluted tubule

    • The collecting duct

    • The glomerular capillaries

    • The distal convoluted tubule

    Correct Answer
    A. The proximal convoluted tubule
    Explanation
    The proximal convoluted tubule is responsible for reabsorbing glucose and amino acids from the glomerular filtrate. This tubule is located in the kidney and plays a vital role in the reabsorption of important substances back into the bloodstream. It has specialized cells that actively transport glucose and amino acids from the tubular fluid back into the blood, preventing their loss in urine. This reabsorption process helps maintain the body's balance of these essential molecules and ensures that they are not wasted.

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  • 19. 

    Urine concentration occurs in the

    • Collecting duct and nephron loop

    • Glomerular space and the filtration membrane

    • Nephron loop and peritubular capilaries

    • Glomerular capsule and proximal tube

    Correct Answer
    A. Collecting duct and nephron loop
    Explanation
    Urine concentration occurs in the collecting duct and nephron loop. The collecting duct plays a crucial role in reabsorbing water from the filtrate, which helps in concentrating the urine. The nephron loop, also known as the loop of Henle, creates a concentration gradient in the medulla of the kidney, allowing for further reabsorption of water and solutes. Together, the collecting duct and nephron loop work to concentrate urine by reabsorbing water and solutes back into the bloodstream.

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  • 20. 

    Substances are reabsorbed from the distal tubule into the

    • Collecting duct

    • Glomerulus

    • Peritubular capillaires

    • Nephron loop

    Correct Answer
    A. Peritubular capillaires
    Explanation
    The correct answer is peritubular capillaries. The peritubular capillaries are a network of tiny blood vessels that surround the renal tubules in the kidney. They play a crucial role in reabsorption, which is the process of reclaiming useful substances from the filtrate and returning them to the bloodstream. As the filtrate travels through the distal tubule, the peritubular capillaries absorb important substances such as water, glucose, amino acids, and ions, ensuring their retention in the body. This reabsorption helps maintain the balance of fluids and electrolytes in the body.

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  • 21. 

    The part of the nephron that drains into the nephron loop is the

    • Proximal convoluted tubule

    • Glomerular capsule

    • Collecting duct

    • Afferent arteriole

    Correct Answer
    A. Proximal convoluted tubule
    Explanation
    The correct answer is the proximal convoluted tubule. The proximal convoluted tubule is the first part of the nephron and is responsible for reabsorbing most of the filtered water and solutes back into the bloodstream. It is located immediately after the glomerular capsule and before the nephron loop. The collecting duct and afferent arteriole are not directly connected to the nephron loop.

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  • 22. 

    An active process that moves substances from the blood into the nephron is

    • Osmosis

    • Tubular secretion

    • Tubular reabsorption

    • Tubular filtration

    Correct Answer
    A. Tubular secretion
    Explanation
    Tubular secretion is the correct answer because it is the process by which substances are actively transported from the blood into the nephron. This process allows for the elimination of waste products, drugs, and excess ions from the body. Tubular secretion occurs in the renal tubules of the nephron, where specific transporters actively move substances from the blood into the tubular fluid. This process is essential for maintaining the balance of ions and regulating the pH of the body fluids.

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  • Current Version
  • Feb 02, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 03, 2011
    Quiz Created by
    Laurayalim

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