Share Excretory system
Save to Folder
What is the function of the excretory system?
To facilitate the elimination of waste products produced by cells after cell metabolism.
What are the main waste products that expell to the exterior the excretory system?
Carbon dioxide,urea,uric acid,and toxic substances.
What elements does the excretory system form?
Respiratory system,sweat glands,liver and urinary system.
What waste products are eliminated by the liver in the excretory system?
The liver eliminates products resulting from the destruction of haemoglobin found in old red blood cells.
What elements do the urinary system form?
The urinary system is formed by two organs:the kidneys,and two types of urinary tracts:the ureters and urethra.
Name the three parts of the kidney.
Renal cortex,renal medulla and renal pelvis.
What are the nephrons?
Nephrons are structural and functional units of the kidneys.They are tubes with one closed end and are surrounded by blood capilaries.
What waste products are eliminated by the respiratory system in the excretory system?
The respiratory system removes CO2 from blood and releases it to the exterior.
What waste products are eliminated by the sweat glands in the excretory system?
The sweat glands releases certain waste products to the exterior through sweat.
What waste products are eliminated by the urinary system in the excretory system?
The urinary system eliminates waste products through the urine.
What is the function of neuthrons?
Function:filter blood and form urine,as well as regulating water and mineral content in the blood.
Say the function of ureters.
Ureters:they transport urine from each kidney to the bladder.
Say the function of the bladder .
Bladder:it accumulates urine.
Say the function of urethra.
Urethra:it carries urine to the exterior.
What is the difference between urethra in men and in women?
That women’s urethras are independent from their reproductive system and man’s urethra is connected with a duct of reproductive system which carries urine.
What is the composition of urine?
Urine is a liquid obtained from blood composed of water,minerals and diverse waste products(mostly urea and uric acid).
