Excretory System Functions
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Questions and Answers

What is the function of the excretory system?

  • To produce hormones
  • To transport oxygen
  • To absorb nutrients
  • To eliminate cellular wastes (correct)

What does excretion mean?

The process of eliminating or expelling waste matter.

What waste products does the skin excrete?

Excess salts.

What are kidneys?

<p>Organs that remove waste from the blood.</p> Signup and view all the answers

What do the kidneys filter and clean?

<p>Fluid from the blood.</p> Signup and view all the answers

What are ureters?

<p>Tubes that connect the kidneys to the bladder.</p> Signup and view all the answers

What is the function of the urinary bladder?

<p>To store urine.</p> Signup and view all the answers

What is the urethra?

<p>A tube through which urine exits the bladder.</p> Signup and view all the answers

What is urine?

<p>Water and wastes filtered out of the blood.</p> Signup and view all the answers

Flashcards

Excretion

The process of removing waste products from the body.

Excretory System

The organ system responsible for eliminating cellular waste.

Kidneys

Organs that filter waste products from the blood.

Ureters

Tubes that carry urine from the kidneys to the bladder.

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Urinary Bladder

The organ that stores urine before it is released from the body.

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Urethra

The tube that carries urine from the bladder to the outside of the body.

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Urine

A mixture of water and waste products filtered from the blood by the kidneys.

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Skin Excretion

The skin excretes excess salts through its pores.

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Kidney Filtration

The kidneys filter out excess water and waste products from the blood.

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Study Notes

Functions of the Excretory System

  • The excretory system is responsible for eliminating cellular waste from the body.
  • Waste is expelled through three main organs: lungs, skin, and kidneys.

Excretion

  • Excretion is the process of eliminating waste matter from living organisms and cells.

Skin's Role in Excretion

  • The skin excretes waste products, including excess salts, primarily through sweating.

Kidneys

  • The kidneys are paired organs that filter and remove waste from the blood.
  • They play a crucial role in maintaining the body's fluid and electrolyte balance.

Filtration Process in Kidneys

  • Blood is filtered in the nephrons, specifically through a structure called the glomerulus.
  • After filtration, the clean blood circulates through nephron tubes for further processing.

Ureters

  • Ureters are tubes that convey urine from the kidneys to the urinary bladder.
  • Urine is propelled through the ureters by muscular contractions.

Urinary Bladder

  • The urinary bladder is a sac-like organ that stores urine until excretion.
  • It can expand and contract to accommodate varying amounts of urine.

Urethra

  • The urethra is the tube that allows urine to exit the body from the bladder.

Composition of Urine

  • Urine is formed from water and wastes filtered from the blood, serving as the body's primary waste removal fluid.

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Description

Test your knowledge of the excretory system's functions with this quiz. Learn how the body eliminates waste through various organs such as the lungs, kidneys, and skin. Engage with definitions and key concepts related to excretion.

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