1. Biology 201 Organismal Structure & Function Animal Phase
Introduction
Biology 201 Organismal Structure & Function Animal Phase
Dr. Tony Serino

2. Structure & Function
Anatomy –study of body structures and relationships
Physiology –study of body mechanisms (homeostasis)

3. Homeostasis Maintenance of a constant internal environment
Uses a reflex arc to self regulate
Reflex functions to maintain a certain set point with a narrow physiological range

4. Homeostasis Reflex

6. Homeostatic Pathways

7. Factors Affecting Homeostasis
Feedback –negative or positive
Feed-forward regulation
Acclimatization
Biorhythms

9. Body Plan Tube within a tube Symmetry (radial or bilateral)
Dorsal Hollow Nerve cord

10. Internal vs. External Environment

11. Body Cavities
(Peritoneal cavity)

12. Serous Membranes & Mesenteries
Mesothelium (simple squamous epithelium) lining the body cavities (parietal) and their organs (visceral)
Each membrane is named for the cavity it lines
Form double membranes which suspend organs within cavities
True mesenteries connect the body wall to the organ
Ligaments connect organ to organ

13. Visceral vs. Parietal Parietal membrane
Body Cavity filled with serous fluid
Visceral membrane

14. Pericardium

15. Pleura
Parietal Pleura
Visceral Pleura
Pleural cavity

16. Peritoneum
Parietal Peritoneum
Visceral Peritoneum
Peritoneal cavity

17. Body Plan Tube within a tube Bilateral Symmetry
Dorsal Hollow Nerve cord
Body Planes
Anatomical Position

18. Anatomical Directions

21. Body Fluids
Transcellular fluids are filtrates of the plasma

22. Important Ions

23. Levels of Anatomy

24. Classification of Life Forms: Three Domains
Eukarya
Eukarya
Domains: Eukarya, Bacteria, Archae
Bacteria and Archae are prokaryotes
Eukarya is divided on the basis of complexity and method of nutrition
Plantae
Animalia
Fungi
Protista
Bacteria
Archae

25. Taxonomy A system to classify and name living things
Each group represents individuals with shared characteristics