What is the function of the ventral blood vessel in an earthworm?
The ventral blood vessels are responsible for carrying blood to the back of the earthworm’s body.
How does the ventral side of a worm feel?
Notice that the earthworm has a rounded dorsal (back) surface and a flatter ventral (belly) surface. Lightly rub your finger along the ventral side toward the posterior end of the worm. You should feel a roughness caused by tiny bristles called setae. Using a magnifying glass, try to see the setae.
How are the dorsal and ventral surfaces differentiated in a preserved adult earthworm?
How are the dorsal and ventral surfaces differentiated in a preserved, adult earthworm? The dorsal surface has ridges and the ventral surface is smooth. The dorsal surface is segmented and the ventral surface is striated. The dorsal surface is darker than the ventral surface.
What is the front of a worm called?
anterior
The ‘head’ or front of the earthworm is called its anterior.
Does the brain attached to the ventral nerve cord?
The earthworm’s ‘brain’. The cerebral ganglion is connected to a ventral nerve cord that runs the length of the body. Each segment is connected to this cord, allowing earthworms to move and respond to light, touch, chemicals, vibrations and more.
What is the function of the ventral nerve cord in an earthworm?
Also, what is the function of the ventral blood vessel in an earthworm? The dorsal blood vessels are responsible for carrying blood to the front of the earthworm’s body. The ventral blood vessels are responsible for carrying blood to the back of the earthworm’s body.
What does the dorsal surface of an earthworm do?
It keeps the skin of the worm moist, and helps in the excretion of waste products. The phagocytes devour bacteria which are injurious to the earthworm, and thus protect it. Running along the dorsal surface of the alimentary canal is the dorsal blood vessels, beneath which is the supra-intestinal duct.
Where are the blood vessels in an earthworm?
Running along the dorsal surface of the alimentary canal is the dorsal blood vessels, beneath which is the supra-intestinal duct. There is a ventral blood vessel ventral to the gut and overlying the ventral nerve cord. Beneath the ventral nerve cord is a small sub-neural vessel.
What are the reproductive organs of an earthworm?
Reproductive organs: The light-colored tissue above and around the hearts are seminal vesicles. Other reproductive parts appear as small white organs on the ventral side of the hearts. Ventral Nerve Cord: With your forceps, gently push aside the intestine to view the long white nerve cord running along the length of the worm beneath it.
