BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 45, Problem 2U
Worms use a hydrostatic skeleton to generate movement. How do they do this?
a. Their bones are filled with water, which provides the weight of the skeleton.
b. The change in body structure is caused by contraction of muscles compressing the watery body fluid.
c. The muscles contain water vacuoles, which, when filled, provide a rigid internal structure.
d. The term hydrostatic simply refers to moist environment. They generate movement just as arthropods do.
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Contracting setae while relaxing longitudinal and circular muscles
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Contracting longitudinal muscles in anterior sections forces fluid across the septum and into segments in the posterior sections
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Contracting longitudinal muscles which puts pressure on the hydrostatic skeleton and causes it constrict and elongate
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Simultaneous contraction of longitudinal and circular muscles within a segment
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Alternating contraction of longitudinal muscle in a posterior segment with contraction of circular muscles in the neighboring anterior segment
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Chapter 45 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 45.1 - Compare hydrostatic skeletons, exoskeletons, and...Ch. 45.1 - Explain how animals with hydrostatic skeletons...Ch. 45.2 - Prob. 1LOCh. 45.2 - Prob. 2LOCh. 45.2 - Prob. 3LOCh. 45.3 - Prob. 1LOCh. 45.4 - Prob. 1LOCh. 45.4 - Prob. 2LOCh. 45.4 - Prob. 3LOCh. 45.5 - Prob. 1LO
Ch. 45.5 - Describe how friction and gravity affect...Ch. 45.5 - Prob. 3LOCh. 45 - Prob. 1IQCh. 45 - Exoskeletons and endoskeletons differ in that a....Ch. 45 - Worms use a hydrostatic skeleton to generate...Ch. 45 - Bone develops by one of two mechanisms depending...Ch. 45 - Which of the following statements best describes...Ch. 45 - Motor neurons stimulate muscle contraction via the...Ch. 45 - Prob. 6UCh. 45 - If you wanted to study the use of ATP during a...Ch. 45 - Place the following events in the correct order....Ch. 45 - You take X-rays of two individuals. Ray has been a...Ch. 45 - You have identified a calcium storage disease in...Ch. 45 - How do the muscles move your hand through space?...Ch. 45 - How can osteocytes remain alive within bone? a....Ch. 45 - Swimming underwater using forelimbs for propulsion...Ch. 45 - If a drug inhibits the release of ACh, what will...Ch. 45 - Prob. 1SCh. 45 - Prob. 2SCh. 45 - The nerve gas methylphosphonofluoridic acid...Ch. 45 - If natural selection favors the evolution of wings...
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