Cockroach Dissection 1:2.MPG

Cockroach Dissection by Dr. Arlene Bertuso, PH177 UPM-CPH

Part 1 of 2: Includes Digestive System (Foregut & Midgut)

Notes:
elongated portion is the esophagus
→ crop
→ gizzard or proventriculus (thickened portion after the crop; with teeth-like structure that helps in the grinding of food, in cockroach there are 28 teeth, according to the net there are 6 ☺)
→ gastric ceca (yellowish pouch-like/tube-like structure; contains bacteria; first part of the midgut)
→ stomach or ventriculus (elongated portion; short);
malphighian tubules (thread-like structure; not part of digestive system);
hindgut (you won't be able to differentiate the colon, pylorus and ileum; grayish material sometimes seen is the developing feces)

Category:

Science & Technology

Tags:

• Cockroach
• Dissection
• 1:2

[thefriedchickenguy]

But they were moving and squirming. Do cockroaches bite? or sting?

[angelianneph]

@thefriedchickenguy they're not, they were killed right before dissection. haha. they bite.

[thefriedchickenguy]

But they were alive when you dosected them. haha

[angelianneph]

@thefriedchickenguy nope, they're not. :)

[thefriedchickenguy]

Dont you ever feel scared or disgusted or freaked out around those things? if i ever see them around my house i scream and slam Textbooks at them! >:l they are nasty. but the video is cool. good job :)

[angelianneph]

@thefriedchickenguy i'm actually very scared of roaches. i can't even go near them, unless they're dead. haha

[Coldheart61595]

yup Filipinos my kababayan :))) good thing we didn't encounter that dissection :))

[cutieyet09]

are you filipino?i hear you speak in filipino.if you are im filipino too galing mo din pala mag dissect!:D

[Mayurmalkhede]

Thanks for this video it helped me in my biology exams

[1996cutekimberly]

nice cockroach :D

[headbangaboogie1]

in some labs you do need them alive to see the nerves, in most they are already dead, im gonna have a marked dissection today :/

[macrrii]

filipino?

[Selina642]

she made it seem so easy :(

[thefriedchickenguy]

Do they bite? But if they were dead why were they kind of moving?