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Animal Form and Function

Animal Form and Function. Basic Principles Refer to pg 217-218 in Holtzclaw Ch 40 in Campbell and media resources. Side note…. Did the plants grow? Can we do the transpiration lab Wed/Fri?

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Animal Form and Function

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  1. Animal Form and Function Basic PrinciplesRefer to pg 217-218 in HoltzclawCh 40 in Campbell and media resources

  2. Side note… • Did the plants grow? • Can we do the transpiration lab Wed/Fri? • If yes, make sure you come to class prepared for AP Investigation 11: Transpiration by reading lab manual. • If no, make sure you come to class prepared for “Neurons, Synapses, and Signaling” (Chapter 48) by pre-reading Chapter 48 along with p. 243-246 in Holtzclaw

  3. HOW DO ANIMALS REGULATE THEIR INTERNAL ENVIRONMENT?HOW ARE ANIMALS STRUCTURALLY ADAPTED FOR SURVIVAL?

  4. Tissue Types • Epithelial Tissue • Connective Tissue • Muscle Tissue • Nervous Tissue

  5. Control and Coordination • Two major systems control and coordinate animal tissues, organs, and organ systems: • Endocrine System • (using hormones that travel via blood) • Nervous Systems • (using impulses along nerves and neurotransmitters between nerves)

  6. Learning Intentions You must know: • The importance of homeostasis and examples. • How feedback systems control homeostasis • One example of positive feedback and one example of negative feedback.

  7. HOMEOSTASIS • In homeostasis, animals maintain a relatively constant internal environment, even when the external environment changes significantly. • Temperature • pH • Salinity All have a set point to maintain! What’s the set point for YOU?

  8. FEEDBACK SYSTEMS CONTROL • Negative (opposite) Feedback Systems • Animal response reduces stimulus • Example: Temperature control • Positive (same) Feedback Systems • Animal response amplifies the change (instead of reversing it) • Example: Childbirth

  9. Negative:

  10. True or False? • The lizard is coldblooded while the walrus is warm blooded.

  11. True or False? • FALSE! • Terms are out of date... • Ectotherms and Endotherms

  12. Learning Intentions You should know: • The importance of homeostasis and examples. • How feedback systems control homeostasis • One example of positive feedback and one example of negative feedback.

  13. Hormones and the Endocrine System Chapter 45 in Campbell, p. 235-237 in Holtz • You must know: • How hormones bind to target receptors and trigger specific pathways • The secretion, target, action, and regulation of at least two hormones • An illustration of both positive and negative feedback in the regulation of homeostasis by hormones.

  14. Hormones and the Endocrine System • ACT OUT!  4 groups: • Oxytocin positive feedback mechanism during childbirth • ADH negative feedback mechanism for water balance • Insulin and glucagon negative feedback mechanism for blood glucose regulation • FSH/LH/Testosterone negative feedback mechanism for sperm production. • 15 minutes to prepare. Make sure you include: • Secretion, target (cell-surface receptor or intracellular receptor?), action, regulation (positive or negative?)

  15. NOW, mini-lesson presentations… • Tues, March 4th • Osmoregulation and Excretion (Ch 44) – Alexa’s group • (Kidney Dissection) • Mon, March 10th • Animal Nutrition (Ch 41) – Gian’s group • Circulation and Gas Exchange (Ch 42) – Melissa’s group • (Heart Dissection) • Wed, March 13th • Animal Reproduction (Ch 46) – Stef’s group • Animal Development (Ch 47) – Evan’s group • Sensory and Motor Mechanisms (Ch 50) – Narissa’s group • Fri, March 15th • (Brain Dissection) Please refer to Holtzclaw for suggestions and points to consider. Refer to criteria.Two full in-class periods to work on it:Thurs, Feb 20th, Thurs, March 6th

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