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This is part of the classification for a complex animal like a reptile, fish, amphibian, bird or mammal: Kingdom: Animalia --- animal life
Subkingdom: Metazoa --- animals with a digestive tract
Phylum: Chordata --- animals with a nerve cord So a simple animal without a nerve cord cannot belong to the phylum Chordata, which comprises basically everything from insect and upwards in complexity. Examples:
Coral polyp
Sponge
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What are the longitudinal bundles of nerve fibers within the spinal cord compise major nerve pathways called?
The longitudinal bundles of nerve fibers within the spinal cord that comprise major nerve pathways are called tracts. These tracts are organized based on their function and transmit information to and from different regions of the body to the brain.
What is the cord at the back of the eyeball?
The optic nerve is the cord at the back of the eyeball, it also carries impulses from the eye to the brain.
The association nerve cells are special nerve cells in the brain and?
Spinal Cord
How does the location of the nerve cord in the crayfish differ from the location of the nerve cord in humans?
In crayfish, the nerve cord is located ventrally (on the belly side) and consists of a series of ganglia linked by nerve fibers, forming a ladder-like structure. In contrast, humans have a dorsal nerve cord, which is part of the central nervous system, encased within the vertebral column. This structural difference reflects the distinct evolutionary adaptations and body plans of these two groups of animals.
What is the nerve which innervates the vas deferens?
The testicular nerve and the nerve to the cremaster innervate the vas deferens in the spermatic cord.
What to call an animal without nerve cord?
non cordata
What runs the length of an animal's spine and is found in all chordates?
Nerve cord
Are spinal cord cells eukaryotic?
yes. spinal cord cells are eukaryotic and contain nerve tissues. they are of the animal kingdom.
What is a nerve cord for a reptile?
In reptiles, the nerve cord is part of the central nervous system that runs along the length of the animal's body. It consists of a chain of nerve cells that extends from the brain and helps in transmitting nerve impulses to control various bodily functions like movement and coordination.
Do dolphins have a dorsal nerve cord?
Yes, dolphins have a dorsal nerve cord. The dorsal nerve cord is an embryonic feature unique to chordates. Is it hollow and most mammals have one.
The notochord of vertebrates is replaced by a nerve cord when the animal becomes an adult?
No, the notochord and the nerve cord arise from different germ layers. The notochord is replaced by an ossified backbone, though there are still remnants between the vertebrae. The nerve cord, however, is protected by the ossified vertebral column.
What is the swellinglike portion of the nerve cord called in a crayfish'?
ganglia
Do pigs have a dorsal nerve cord?
Yes, pigs, like all mammals, possess a dorsal nerve cord, which is a characteristic feature of chordates. This nerve cord, known as the spinal cord, runs along the back of the animal and is part of the central nervous system, playing a crucial role in transmitting signals between the brain and the rest of the body.
How does the position of the worms nerve cord compare with your nerve cord?
The position of the worms nerve cord compare with your nerve cord is it placement along the ventral surface of the body. Our spinal cord is protected by vertebra were the worms is unprotected.
Afferent nerve fibers enter the part of the spinal cord called?
Afferent nerve fibers enter the spinal cord through the dorsal roots.
What are the swollen portions of the nerve cord called in a crayfish?
The swollen portions of the nerve cord in a crayfish are called ganglia. These ganglia serve as clusters of nerve cell bodies that process information and coordinate responses in the crayfish's nervous system. The largest ganglia, located in the head, function similarly to a brain, while others are distributed along the nerve cord throughout the body.
What does the ventral nerve cord do in a earthworm?
there is not a ventral nerve cord
