Which structure (or structures) acts (or act) as a protective surface agains the outside environment, AND a place for muscle attachment? (mark all that apply) nematode spicules molluscan coelom nematode cuticle the platyhelminthine pneumocoel arthropod exoskeleton platyhelminthine exoskeleton molluscan valve
Which structure (or structures) acts (or act) as a protective surface agains the outside environment, AND a place for muscle attachment? (mark all that apply) nematode spicules molluscan coelom nematode cuticle the platyhelminthine pneumocoel arthropod exoskeleton platyhelminthine exoskeleton molluscan valve
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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![**Question:**
Which structure (or structures) acts (or act) as a protective surface against the outside environment, *and* a place for muscle attachment? (Mark all that apply)
**Options:**
- [ ] Nematode spicules
- [ ] Molluscan coelom
- [ ] Nematode cuticle
- [ ] The platyhelminthe pneumoceol
- [ ] Arthropod exoskeleton
- [ ] Platyhelminthe exoskeleton
- [ ] Molluscan valve](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc446a267-4418-4ec2-a18c-7b0f495e22eb%2Fcd3883b7-49aa-4457-96fa-19175a904095%2Ff1iro5b_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
Which structure (or structures) acts (or act) as a protective surface against the outside environment, *and* a place for muscle attachment? (Mark all that apply)
**Options:**
- [ ] Nematode spicules
- [ ] Molluscan coelom
- [ ] Nematode cuticle
- [ ] The platyhelminthe pneumoceol
- [ ] Arthropod exoskeleton
- [ ] Platyhelminthe exoskeleton
- [ ] Molluscan valve
Transcribed Image Text:In mollusks, torsion refers to:
- the winding of the shell and the visceral mass
- the ability to draw the head into the shell
- an anterior-trending twisting of the digestive tract
- the retraction of the radula into the pharyngeal cavity
- posterior-trending spiraling of the nerve cord
- lack of a torso
- the loss of the so-called "swimming organ"
This list outlines various concepts related to the term "torsion" in mollusks, a process of significant biological and anatomical changes.
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