Labeled dissected earthworm
Labeled Dissected Earthworm. Locate the clitellum which is on the anterior end of the worm. Place the specimen on the fingers of your left hand. The morphology and anatomy of the earthworm are discussed below. Some of the organs have been removed in order to visualize just the circulatory and digestive systems a.
Annelida Biology 11 Honours Animalia Labs From matt-heymen-animalia-labs.weebly.com
Earthworms have a tube like arrangement or cylindrical shaped and reddish brown segmented body. Locate the mouth of the worm on the far anterior end of the worm the openings toward the anterior of the worm are the sperm ducts the openings near the clitellum are the genital setae. The earthworms found in india are pheretima and lumbricus. The dissection can be performed in about 30 minutes and requires only scissors forceps and dissecting pins. If a worm is cut open from the anterior to the posterior end by an incision through the body wall in the mid dorsal line the internal structures may easily be studied. Identify the dorsal side which is the worm s rounded top and the ventral side which is its flattened bottom.
Lift up the skin with a pair of forceps and snip an opening with a pair of dissecting scissors.
Fetal pig anatomy video. Earthworm dissection external anatomy. If a worm is cut open from the anterior to the posterior end by an incision through the body wall in the mid dorsal line the internal structures may easily be studied. Dissection of the earthworm 5. External dorsal surface of worm 1. Locate the clitellum which is on the anterior end of the worm.
Source: klemow.wilkes.edu
Mouth takes in food from soil 2. In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened. Place earthworm in the dissecting tray rinse off the excess preservative. Locate the clitellum which is on the anterior end of the worm. Hold the scissors almost in a horizontal position keeping the lower arm just below the body wall and cut the skin anteriorly for about 2 cm.
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In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened. In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened. Class handouts earthworm dissection picture guide. Earthworms have a tube like arrangement or cylindrical shaped and reddish brown segmented body. Pharynx throat passes food from mouth to esophagus 4.
Source: biologycorner.com
See the figure below for a representation. Mouth takes in food from soil 2. Identify the dorsal side which is the worm s rounded top and the ventral side which is its flattened bottom. Locate the clitellum which is on the anterior end of the worm. Class handouts earthworm dissection picture guide.
Source: quizizz.com
The dissection can be performed in about 30 minutes and requires only scissors forceps and dissecting pins. The earthworms found in india are pheretima and lumbricus. See the figure below for a representation. It is to be noted that the body of the earthworm is essentially a double tube. Examine your earthworm and determine the dorsal and ventral sides.
Source: matt-heymen-animalia-labs.weebly.com
A hand lens may be helpful. Identify the dorsal side which is the worm s rounded top and the ventral side which is its flattened bottom. Lay the worm on your dissecting tray with its dorsal side facing up. Locate the mouth of the worm on the far anterior end of the worm the openings toward the anterior of the worm are the sperm ducts the openings near the clitellum are the genital setae. Hold the scissors almost in a horizontal position keeping the lower arm just below the body wall and cut the skin anteriorly for about 2 cm.
Source: biologyjunction.com
Examine your earthworm and determine the dorsal and ventral sides. Place earthworm in the dissecting tray rinse off the excess preservative. Pharynx throat passes food from mouth to esophagus 4. Fetal pig anatomy video. Place the specimen on the fingers of your left hand.
Source: chegg.com
The body wall is the outer tube and the alimentary canal is the. Locate the clitellum which is on the anterior end of the worm. Lay the worm on your dissecting tray with its dorsal side facing up. Hold the scissors almost in a horizontal position keeping the lower arm just below the body wall and cut the skin anteriorly for about 2 cm. It is to be noted that the body of the earthworm is essentially a double tube.
Source: andrewgarfields.blogspot.com
Examine your earthworm and determine the dorsal and ventral sides. Dissection of the earthworm 5. Lay the worm on your dissecting tray with its dorsal side facing up. Identify the dorsal side which is the worm s rounded top and the ventral side which is its flattened bottom. Insert the tip of one of the blades of a pair of fine scissors through the skin above the dorsal blood vessel at about 30th segment of the body.
Source: pinterest.com
Earthworm dissection diagram 1. Place the specimen on the fingers of your left hand. The arrow points to the worm s clitellum an organ responsible for mucus production during reproduction. Insert the scissors into the opening and cut in a straight line all the way up through the mouth. In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened.
Source: pinterest.com
Lay the worm on your dissecting tray with its dorsal side facing up. Insert the scissors into the opening and cut in a straight line all the way up through the mouth. In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened. Locate the clitellum which is on the anterior end of the worm. External dorsal surface of worm 1.
Source: quizlet.com
Insert the tip of one of the blades of a pair of fine scissors through the skin above the dorsal blood vessel at about 30th segment of the body. Lay the worm on your dissecting tray with its dorsal side facing up. Examine your earthworm and determine the dorsal and ventral sides. The dark line shows the location of the dorsal blood vessel. Pharynx throat passes food from mouth to esophagus 4.
Source: biologyjunction.com
It is to be noted that the body of the earthworm is essentially a double tube. Some of the organs have been removed in order to visualize just the circulatory and digestive systems a. Place the specimen on the fingers of your left hand. The diagram given below represents the morphological features of an earthworm. Locate the clitellum which is on the anterior end of the worm.
Source: tartrerepub.blogspot.com
For more detailed dissection instructions and information check out carolina dissection kits. Pharynx throat passes food from mouth to esophagus 4. Examine your earthworm and determine the dorsal and ventral sides. The earthworms found in india are pheretima and lumbricus. For more detailed dissection instructions and information check out carolina dissection kits.
Source: learning-center.homesciencetools.com
Earthworm dissection diagram 1. Locate the mouth of the worm on the far anterior end of the worm the openings toward the anterior of the worm are the sperm ducts the openings near the clitellum are the genital setae. Identify the dorsal side which is the worm s rounded top and the ventral side which is its flattened bottom. External dorsal surface of worm 1. In the dissection the earthworm is first cut from the clitellum to the mouth and the outer epidermis is opened.
Source: biologyjunction.com
Lift up the skin with a pair of forceps and snip an opening with a pair of dissecting scissors. Dissection of the earthworm 5. Earthworm dissection external anatomy. Insert the scissors into the opening and cut in a straight line all the way up through the mouth. It is to be noted that the body of the earthworm is essentially a double tube.
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