Ch 36 Supplement Move that bag of bones

Give a Dog….. Spongy bone Compact bone Periosteum Bone marrow Haversian canal Compact bone Spongy bone Osteocyte Artery Vein Periosteum

Ball-and-Socket Joint Hinge Joint Pivot Joint Saddle Joint Clavicle Ball-and- socket joint Scapula Humerus Femur Patella Hinge joint Tibia Fibula Humerus Radius Pivot joint Ulna Metacarpals Carpals Saddle joint Figure 36-4 Freely Movable Joints and Their Movements

Muscle Tendon Femur Patella Bursa Ligament Synovial fluid Cartilage Fat Fibula Tibia Figure 36-5 Knee Joint

Actin pulled Cross-bridge releases actin Cross-bridge changes shape Myosin returns to original shape Myosin forms cross-bridge with actin Cycle Diagram Section 36-2

Skeletal muscle Bundle of muscle fibers Actin Myosin Sarcomere Z disc Muscle fiber (cell) Myfibril Figure 36-7 Skeletal Muscle Structure

Relaxed Muscle Contracted Muscle Z discMyosinActinZ disc Sarcomore Cross-bridgesZ disc Movement of Actin Filament Actin Binding sites Cross- bridge Myosin Figure 36-8 Muscle Contraction

Relaxed Muscle Contracted Muscle Z discMyosinActinZ disc Sarcomore Cross-bridgesZ disc Movement of Actin Filament Actin Binding sites Cross- bridge Myosin Figure 36-8 Muscle Contraction

Relaxed Muscle Contracted Muscle Z discMyosinActinZ disc Sarcomore Cross-bridgesZ disc Movement of Actin Filament Actin Binding sites Cross- bridge Myosin Figure 36-8 Muscle Contraction

Relaxed Muscle Contracted Muscle Z discMyosinActinZ disc Sarcomore Cross-bridgesZ disc Movement of Actin Filament Actin Binding sites Cross- bridge Myosin Figure 36-8 Muscle Contraction Section 36-2

The sliding filament theory A great link….

Movement Biceps (relaxed) Triceps (relaxed) Biceps (contracted) Triceps (relaxed) Figure Opposing Muscle Pairs

Skin Barrier to infection Regulator of body temperature Remover of waste products Protector against UV radiation Epidermis Dermis Outer layer Inner layer functions as a is made up of the which is the Concept Map

Hair follicle Sweat pore Nerves Hair Epidermis Dermis Subcutaneous layer Muscle Sweat gland Fat Sebaceous gland Figure The Structure of Skin