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Science 3RD QUARTER > SCIENCE 3RD QUARTER: EXCRETORY SYSTEM (UNFINISHED = DISCUSSION) > Flashcards

SCIENCE 3RD QUARTER: EXCRETORY SYSTEM (UNFINISHED = DISCUSSION) Flashcards

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1
Q

What are the main functions of the excretory system?

A
  1. removes toxins and wastes from the body
  2. regulates the amount of fluid and salts in the body
  3. maintains the pH of the blood
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2
Q

What does the excretory system help with?

A
  • Homeostasis
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3
Q

What is the Urea?

A
  • a waste product of many living organisms
  • the major organic component of human urine
  • the liver converts ammonia to the less toxic urea.
  • the circulatory system carries urea to the kidneys, where it is excreted.
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4
Q

How does Urea formulate?

A
  • excess protein from food goes to the liver where it is converted to Urea
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5
Q

What are the parts of the Excretory System?

A
  1. Kidneys
  2. Ureter
  3. Urinary Bladder
  4. Urethra
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6
Q

What are the kidneys?

A
  • important to the excretory system
  • include nephrons
  • eliminate:
    1. Nitrogenous Waste Products
    2. Excess quantities of salts and water
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7
Q

What are Nephrons?

A
  • filtering units in the kidneys
  • clean and balance blood to produce urine
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8
Q

What are examples of Nitrogenous Waste Products?

A

~ ammonia
~ uric acid
~ urea
~ creatine
~ creatinine
~ amino acids

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9
Q

What is the Ureter?

A
  • move the waste and urine from the kidneys to the bladder
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10
Q

What is the Urinary Bladder?

A
  • a single sac that holds urine
  • highly distensible and expands superiorly
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11
Q

What is the Urethra?

A
  • where the urine travels out
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12
Q

What is the first step of the Excretory System?

A
  • blood carries waste to the kidney
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13
Q

What is the second step of the Excretory System?

A
  • urea is filtered out of the blood
  • filtered blood leaves the kidney and returns to heart
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14
Q

What is the first step of the Excretory System?

A
  • ureter carries waste and urine to the bladder
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15
Q

What is the first step of the Excretory System?

A
  • urine exits via urethra
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16
Q

What are the diseases of the excretory system?

A
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Science 3RD QUARTER (8 decks)

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