2030lecture4 - OUTLINE Protozoa 1. Introduction 2....

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1 OUTLINE Protozoa Animal Diversity 5 th Ed. Chapter 5, Pages 89 - 111 Animal Diversity 4 th Ed. Chapter 5, Pages 88 - 109 1. Introduction 2. Locomotion 4. Osmoregulation 5. Reproduction (assigned reading) c Lecture 4 - 1 A cilium propels water parallel to the surface of attachment - Provides the means for 'directed' movement - Creates water current directed at the cytostome (i.e. mouth) - Prevents stagnant layer of water accumulating around body CILIARY LOCOMOTION Direction of animal Body wall Paramecium and vorticella videos at: http://www.micro.magnet.fsu.edu/moviegallery/pondscum.html Lecture 4 - 2
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2 Ciliary Locomotion Body covered by distinct rows of cilia Movement of organism is achieved by coordinated beating of cilia Metachronal Beating CILIARY LOCOMOTION Lecture 4 - 3 Ciliary Locomotion Direction of animal Body Wall Power Stroke : Stiffened cilia propel water parallel to cell surface Recovery Stroke : Cilia bends towards body to reduce resistance CILIARY LOCOMOTION Lecture 4 - 4
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3 (A) Cilia beat obliquely (i.e. at an angle), therefore organism moves in a spiral path
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This note was uploaded on 06/17/2010 for the course BIOLOGY bio 2030 taught by Professor .. during the Fall '10 term at York University.

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2030lecture4 - OUTLINE Protozoa 1. Introduction 2....

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