Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 26, Problem 1WIO
Describe some invertebrate nervous systems. Why do animals with simple nervous systems still exist, even after the more complex vertebrate nervous system evolved?
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Chapter 26 Solutions
Biology: Concepts and Investigations
Ch. 26.1 - Prob. 1MCCh. 26.1 - Prob. 2MCCh. 26.1 - Prob. 3MCCh. 26.2 - Prob. 1MCCh. 26.2 - Where is the myelin sheath located?Ch. 26.2 - Prob. 3MCCh. 26.2 - What are the functions of each of the three...Ch. 26.3 - Describe the forces that maintain the distribution...Ch. 26.3 - Prob. 2MCCh. 26.3 - Prob. 3MC
Ch. 26.3 - Prob. 4MCCh. 26.3 - What prevents action potentials from spreading in...Ch. 26.3 - Prob. 6MCCh. 26.3 - How do myelin and the nodes of Ranvier speed...Ch. 26.4 - Describe the structure of a synapse.Ch. 26.4 - Prob. 2MCCh. 26.4 - Prob. 3MCCh. 26.4 - Prob. 4MCCh. 26.5 - Prob. 1MCCh. 26.5 - Prob. 2MCCh. 26.5 - Prob. 3MCCh. 26.5 - Prob. 4MCCh. 26.6 - Prob. 1MCCh. 26.6 - Prob. 2MCCh. 26.6 - Prob. 3MCCh. 26.6 - List some structures that protect the central...Ch. 26.6 - Prob. 5MCCh. 26.7 - The researchers conducted a behavioral experiment...Ch. 26.7 - Prob. 2MCCh. 26 - Some cells of the central nervous system are...Ch. 26 - Prob. 2MCQCh. 26 - What event triggers an action potential? a....Ch. 26 - Prob. 4MCQCh. 26 - Prob. 5MCQCh. 26 - Prob. 6MCQCh. 26 - Prob. 7MCQCh. 26 - Damage to the surface tissue of the spinal cord...Ch. 26 - Prob. 9MCQCh. 26 - Describe some invertebrate nervous systems. Why do...Ch. 26 - Prob. 2WIOCh. 26 - Prob. 3WIOCh. 26 - Prob. 4WIOCh. 26 - What is the connection between the threshold...Ch. 26 - Write a nonbiological analogy for resting...Ch. 26 - Prob. 7WIOCh. 26 - Sketch a synapse: label the axon and synaptic...Ch. 26 - Describe the events that occur at a synapse when a...Ch. 26 - Prob. 10WIOCh. 26 - Prob. 11WIOCh. 26 - Cerebral palsy is a nervous system disorder that...Ch. 26 - Traumatic brain injury can occur when a person...Ch. 26 - Prob. 14WIOCh. 26 - Prob. 15WIOCh. 26 - Prob. 16WIOCh. 26 - Prob. 1PITCh. 26 - Prob. 2PITCh. 26 - PULL IT TOGETHER 4. Acid the somatic, autonomic,...
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- What structures play a role in protecting vertebrate central nervous tissue?arrow_forwardDescribe the roles of and differentiate between the divisions of the vertebrate nervous system (afferent, efferent, somatic, autonomic, sympathetic, parasympathetic).arrow_forwardWhich of the following are NOT trends that have occurred during the evolution of the central nervous system in invertebrates? A)none of the above – all are trends B)The positioning of nerve chords at the ventral end of the animal C)The development of sensory structures for the detection of gravity, sound and light D)Increasing the size of cerebral ganglia and formation of a “brain” E)The processing of sensory information by neural ganglia and the generation of motor commandsarrow_forward
- Why leeches and not other animals are used in studying nervous system functions?arrow_forwardCan an organ system function correctly when one of its organ does not? Explain. How do the different organ systems work together in ensuring animal survival?arrow_forwardWhat are the noteworthy features of the nervous system of arthropods?arrow_forward
- How do body structures and functions of a flatworm compare with those of a cnidarian for a. sensory responses to the environment? b. arrangement of the nervous system? c. obtaining food? d. movement? e. excretion of body wastes?arrow_forwardDescribe the Nervous organization of the following invertebrate organisms. Which organisms show cephalization? Hydra Planarian Annelids Arthropods Mollusksarrow_forwardWhy is the development of a central processing center for impulse conduction vital to the evolution of more complex animals?arrow_forward
- Annelids have a nervous system that includes: O a. Adorsal brain connected to a nerve net. O b. Adorsal nerve connected to a dorsal brain. A ventral nerve with ganglia (mini brains) in each segment. O C. O d. Adorsal nerve with ganglia in each segnment. O e. Aventral brain and ventral nerve cord.arrow_forwardWhat are the roles of Hox genes in the development of Nervous System?arrow_forwardHow is the nervous system characterized in beings of the phylum Annelida? How can one compare cephalization in annelids to cephalization in nematodes and platyhelminthes?arrow_forward
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