Bio Part 2

Topic of the day: Motor Neurons

Mr.Foo: It is good to have very thick axons. It has large surface area for the polarization mar. So, the nerve transmission is faster lor... For example, earthworms have very thick axon. If you touch it, it will only move a little. But if you put it inside boiling water, it will flicker vigorously...
Prisca: Then why we cut the earthworm into two it wont die?
Mr.Foo: Because it seems ah, insects are like no brain one. They only have ganglion. So, they wont die lor...

Mr.Foo suddenly pause and think...

Mr.Foo: You know the mantis? The insect with two pincers?

Everyone trying to describe the insect.

Mr.Foo: The female mantis is much bigger than the male mantis... Male mantis can only mate one time, you know why?
Someone at the back row: Because it will die after mating?
Another person: Why they so stupid?
Mr.Foo: Yes, and they are insect mar. No brain mar... So, they still do it. Just like man ar... They give money to the woman and then the woman run away...
Marquez: Must be personal experience lar...
Prisca: How the mantis die?
Mr.Foo: The male mantis are cautious, they will dance and distract the female mantis. Then the female mantis will act like distracted to let the male "grab" her... Then the female quickly turn and "grab" him... The female will cut the male's head off...

Everyone laughed...

Marquez: Sir, if the male's head is already cut, how they mate?
Mr.Foo: Because the male doesn't need the head to mate mar. They have no brain, so, the body can still function mar...

Everyone laughed...

Syed (the American guy): I cant believe it man... That's crazy yo... (In thick American accent)
Marquez: What the heck man... Its like doing "that" with a dead body... So sick man...
The front row, including Marquez, Syed, Tze Jian, Larry and I laughed...
Mr.Foo: After they mate, the female mantis will eat the male. From head to tale, nothing is wasted.
Joel: What a great dad! He give everything for his next generation...

Back to the lecture...