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Protection, Support & Locomotion Systems Ch 34 Guide & Intro to Coordination Systems.

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Presentation on theme: "Protection, Support & Locomotion Systems Ch 34 Guide & Intro to Coordination Systems."— Presentation transcript:


2 Protection, Support & Locomotion Systems Ch 34 Guide & Intro to Coordination Systems

3 COORDINATION SYSTEMS Systems that Physically and Chemically coordinate the body: Physical: SKIN SUPPORT MUSCULATURE Chemical: NERVOUS ENDOCRINE

4 SYSTEMS: Multiple organs working together to serve a body function Tissues: cells working together to do a simple function Organs: tissues working together to do a complex function Cells: smallest basic units Respiratory system

5 Systems are made of: Organs, Tissues, Cells,& connective tissues Tissues include: a. Epithelial tissue b. Muscle tissue c. Connecting tissue 1) Cartilage 2) Tendons 3) Ligaments Smokers Lung Tissue

6 The Skin: 1. Structure………. a. Epidermis made of epithelial cells b. Dermis with sweat glands hair follicles oil glands capillaries nerve cells

7 A. The Skin..……….. the largest organ in the body 2. Function: protection temperature control sensory integrity of the body secretions from glands produces Vitamin D

8 Support Systems may be: Exoskeleton:Endoskeleton: Hard outer covering Internal set of bones

9 Exoskeletons Hard outer covering made of chitin or shell examples: lobster, snail, squid Does the starfish have and exoskeleton ?

10 No !.. An Endoskeleton: Made of 1). cartilage or 2). bone Covered by muscles skin Examples: starfish, shark, mammals.

11 B1. Human Endoskeleton made of a. Axial: skull, backbone, ribs, sternum b. Appendicular: arms, legs, shoulders, hips,wrists, ankles Boo !

12 Endoskeletons also have……. 1c. Ligaments that hold bone to bone 1d. Tendons that hold muscle to bone, muscle tenders 1e. Joints where 2 bones come together

13 Types of Joints

14 Joint Damage: Arthritis

15 B2. Bone Formation :

16 Bone Deformation: Lack of Vitamin D Bow-legged

17 B3. The Support System Functions: Protection of organs Movement Stores calcium & potassium Produces RBC (marrow) Supports

18 C1.Three types of Muscle : A. Smooth: involuntary control of internal organs for digestion, & blood vessels B. Cardiac: involuntary control of the heart C. Skeletal: Voluntary control of the skeletal muscles for movement

19 The Musculature System…….. 2. Structure: Voluntary Muscles Striated-Skeletal Involuntary Muscles Cardiac- Heart Smooth-Stomach Striated Skeletal Several nuclei Box shaped, many mitochondria

20 Cardiac Muscle: Fewer Striations Fewer Mitochondria Large nuclei Lattice work of spaces between some cells Still square shape One nuclei per cell

21 Smooth Muscle: Eye shaped One nuclei per cell No lattice work No striations Long & drawn out Fewer Mitochondria

22 How Do Muscles Contract? Muscle bundles work in opposite pairs: Contracting & Relaxing (biceps & triceps in the arms)

23 4a. Sliding Filament Theory of MuscleContraction: Muscles are made of Bundles Of fibers with Smaller subunits of myofibrils Myofibrils are made of Actin & Myosin chemcials require ATP energy To slide past each other Myosin Actin Relaxed Muscle Contracted Muscle

24 C6. Musculature System Function: Movement Stores Protein Maintains Body Shape

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