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How is the nervous system of a flatworm more complex than the sensory cells and nerve net of a Cnidaria?
The nervous system of flatworms is more complex than the sensory cells and nerve net of Cnidaria due to the presence of a centralized structure, including a pair of cerebral ganglia and longitudinal nerve cords, which allow for more coordinated movement and processing of information. In contrast, Cnidarians possess a decentralized nerve net that lacks a central brain, resulting in less complex behavior and response to stimuli. Flatworms exhibit bilateral symmetry and more sophisticated behaviors, indicating a higher level of neural organization compared to the simpler radial symmetry of Cnidarians. This complexity enables flatworms to engage in more advanced functions such as learning and problem-solving.
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What is the adaptive advantage of a nervous system to a free-living flatworm?
1. The nervous system allows a free-living flatworm to respond to stimuli in its environment. The eyespots in the nervous system can detect the presence or absence of light and the sensory cell can detect chemicals and movement in water. These adaptions are necessary to the primary environments of flatworms.
What is the adaptive advantage of a nervous system for a free living flatworm?
1. The nervous system allows a free-living flatworm to respond to stimuli in its environment. The eyespots in the nervous system can detect the presence or absence of light and the sensory cell can detect chemicals and movement in water. These adaptions are necessary to the primary environments of flatworms.
Which system is found in a baboon but not in a flatworm?
Baboons possess a complex nervous system, including a well-developed brain and a spinal cord, which allows for advanced sensory processing and motor control. In contrast, flatworms have a simpler nervous system, characterized by a nerve net and a pair of nerve cords, lacking the centralized structures found in higher animals like baboons. This difference illustrates the evolutionary complexity and adaptations of vertebrates compared to invertebrates.
What is the major difference between simple and complex nervous systems?
simple-> doesnt coordinate activities unless there is a ganglia complex -> has a true brain with sensory structure that coordinates acitivties efficiently
What system comprises the sensory and motor neurons?
The peripheral nervous system comprises the sensory and motor neurons.
What is the name of the neurone that carries impulses to the central nervous system?
The neuron that carries impulses to the central nervous system is called a sensory neuron. Sensory neurons transmit signals from sensory receptors to the brain and spinal cord, allowing the central nervous system to process and respond to sensory information.
Which structure carries sensory information?
the dorsal horn is involved in sensory functions
What is the sensory do in your nervous system?
Sensory nerves are part of the peripheral nervous system. This is also called the PNS for short. Sensory nerves work in conjuction with the senses, to receive and transmit signals and impulses from the sensory organs.
What division of the peripheral nervous system does the autonomic nervous system belong?
sensory
What body system stimulates muscles to contract and interprets information from sensory organs?
The nervous system which also interprets information from sensory units
What type of nervous system does a mollusk have?
Mollusks have a decentralized nervous system, which is not as complex as that of vertebrates. Their nervous system typically consists of a series of interconnected nerve cords and clusters of nerve cells called ganglia. Depending on the species, some mollusks, like cephalopods, have more developed nervous systems, enabling complex behaviors and greater sensory processing. Overall, their nervous system varies significantly across different classes of mollusks.
Does the sensory afferent division conveys impulses away from the central nervous system?
No, the sensory afferent division conveys impulses towards the central nervous system. Afferent neurons transmit sensory signals from sensory receptors to the central nervous system, whereas efferent neurons carry signals away from the central nervous system to muscles and glands.
