2. • This presentation was made for class 11 & 12
students and was explained in detailed during the
Seminar (SCIEN-CON).
• This approach was taken by the medical students of
MIDNAPORE MEDICAL COLLEGE, WEST
BENGAL, INDIA for motivating the students
interested in medical field.
• This was guided by professors of all dept.
SURAJ DHARA, MMCH 2
3. • These are the organs which are
getting reduced in there size &
have lost total or partial
ancestral function or have
evolved to take a new function
in relation to the evolutionary
history.
• Charles Darwin listed a number
of rudimentary human organs.
SURAJ DHARA, MMCH 3
5. Transparent 3rd eyelid
Present in birds, reptiles
Drawn across the eye from the medial canthus of the eye
Protection & moisturizing
SURAJ DHARA, MMCH 5
6. We can’t move our pinna.
But few can do that.
SURAJ DHARA, MMCH 6
7. Tail was useful for the balance.
When humans learned to walk the tail became useless.
Fused to vertebrae as Coccyx.
SURAJ DHARA, MMCH 7
8. Remote ancestors ate raw diet, hunted animals.
Needed more space & power for chewing.
But as time went, our diet became softer.
We developed ways to cook food to make easier to eat.
SURAJ DHARA, MMCH 8
10. Shrunken remnant of cecum.
Functionally active in remote ancestors of human.
Foliage rich diet pattern.
People began to eat more easily digested foods &
became less reliant on cellulose rich diet for energy.
The cecum became less necessary for digestion &
continued to shrink.
SURAJ DHARA, MMCH 10