(b) Explained in short about four organs of human excretory system.
Answers
Answer: Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder, and urethra.
four organs of excretory system are:-
1) Kidney:
It is the main organ for filtration of blood and formation of urine.
The structural and functional units of the kidneys are the nephrons.
There are almost 3 million nephrons in the two kidneys.
The renal arteries provide blood to the kidney , the nephrons filter them and urine is sent to the ureters.
2) Ureters:
Ureters are a pair of thin walled, muscular tubes extending from the kidney to the urinary bladder.
Their main function is to transport the urine from the kidney to the urinary bladder.
3) Urinary bladder:
The urinary bladder is a large pouch present in the pelvic cavity
It is responsible for temporary storage of the urine before getting it excreted.
The average volume of urine stored in each cycle is around 200 ml.
4) Urethra:
This part of the excretory system is involved in carrying the urine from the urinary bladder to outside via the penis