define vestigial organ. write names of some vestigial organs in human body and write the names of those animals in whom same organs are functional
Answers
Answer:
These 'useless' body-parts, otherwise known as vestigial organs, are remnants of lost functions that our ancestors possessed. They once represented a function that evolved out of a necessity for survival, but over time that function became non-existent.
Appendix, sinuses, ear muscles, wisdom tooth, tonsils, and tail bone are the vestigial organs present in the human body. The appendix is vestigial for humans nut ruminant animals it is considered with digestion. Ear muscles are vestigial for us but in monkeys and cattle, they are functional.
Explanation:
Vestigial Organs are organs that have no function in human body. Some vestigial organs in human body are Vermiform Appendix (present in cows), Auricular Muscle (present in cats and dogs), Coccyx (tailed mammals).
Explanation:
- Vestigial organs have no particular function in human body. Their presence or absence would not affect the normal physiology of the body.
- Some common vestigial organs present in human body are:
- Vermiform Appendix:- It is a small organ present as an extension of the colon of large intestine in humans. It is large and functional in the gastro-intestinal tract of ruminant animals such as cow, and aids in the digestion of cellulose.
- Auricular Muscle:- These muscles are responsible for the movement of the visible parts of the ear, and are much more useful to other mammals, such as cats.
- Coccyx:- The last bone of the vertebral column that mainly forms the pubic part along with other pubic bone and sacrum. Coccyx is also known as tail bone and shows ancestral characteristics such having tail. Gradually, our ancestors evolved from having tail to being tailless and the only thing that remained was the tail bone, or the coccyx.
Final Answer
Vestigial organs are the structures that have little to no known useful function in the human body. Some Vestigial organs in human body are: Vermiform Appendix (present and functional in ruminant animals), Auricular Muscle (present and functional in feline and canine family), coccyx (functional in mammals with tails).