ENRICHMENT DAY! We are starting our new unit today – ANIMALS Get out a sheet of paper ready for warm-up!

WARM-UP  List all the body systems you can think of.  List any of the organs you can that make up each of the systems you listed above.  Do any of these systems work together? If so, which ones?

INTRO TO THE ANIMAL KINGDOM

What is an Animal? Characteristics of All Animals 1. Animals are Multicellular 2. Animals are Eukaryotic 3. Animals are Heterotrophs

Evolutionary/Developmental Milestones in Animals 1.Cell specialization and levels of organization 2. Development of body symmetry and segmentation 3.Development of an internal body cavity and tissue layers

Cell Specialization Cells throughout a multicellular organism can develop in different ways to perform different tasks.

Levels of Organization

Body Symmetry  Radial Symmetry: A body plan in which all body parts of an organism are arranged around a central point  Bilateral Symmetry: a single plane divides the body into two mirror images  Asymmetry: cannot be divided into mirror images Symmetry in biology is the balanced distribution of duplicate body parts or shapes. The body plans of most multicellular organisms exhibit some form of symmetry…

Body Segmentation Segmentation of the body allows development of various specialized limbs, such as antennae, pincers, walking legs, claws, wings, etc. Cephalization is the concentration of nervous tissues in one location which eventually produces a head region with sensory organs and a brain.

Tissue Layers & Body Cavity A body cavity, called a coelom, increases the efficiency of food intake and waste removal. Tissue LayerDevelops Into Endodermdigestion and respiration structures Mesodermmuscles, bones, blood, skin, reproductive organs Ectodermskin, brain, nervous system

The Animal Kingdom is divided into two main groups… Invertebrates & Vertebrates

Porifera

Invertebrates  Over 95% of all animal species are invertebrates  There are 8 major phyla of invertebrates from the simplest to the most complex…

Invertebrates PORIFERA (Sponges)CNIDARIAN Sea Anemone Jellyfish PLATYHELMINTHES (Flatworms) NEMATODA (Round Worms) Planaria Tapeworm Pinworm Hookworm

Invertebrates ANNELIDAMOLLUSCA Earthworm LeechSquid, Snails, Clams, etc. ARTHROPODAECHINODERMATA Crustaceans Spiders Insects Starfish Sea Cucumber Sand Dollar

ANIMAL BODY SYSTEMS Body systems are all interrelated and work together to perform their functions in animals. Body systems can be organized and studies by these functions:  REGULATION: Excretory & Nervous Systems  NUTRIENT ABSORPTION: Respiration, Digestion, & Circulatory Systems  DEFENSE: Immune, Integumentary, Lymphatic, Skeletal, & Muscular Systems  REPRODUCTION: Reproductive & Endocrine Systems  Pg Pg. 820