Section 35-1
Chapter 36 –
The Skeletal, Muscular and Integumentary Systems
Go to Section: Section Outline
Section 36-1
36–1 The Skeletal System A. The Skeleton B. Structure of Bones C. Development of Bones D. Types of Joints 1. Immovable Joints 2. Slightly Movable Joints 3. Freely Movable Joints E. Structure of Joints F. Skeletal System Disorders
Go to Section: The Skeletal System
Section 36-1
Skull Axial Appendicular Skeleton Clavicle Skeleton Sternum Scapula
Ribs Humerus
Vertebral Radius Pelvis column Ulna Carpals Metacarpals
Phalanges Femur
Patella Fibula Tibia Tarsals Metatarsals Phalanges
Go to Section: Figure 36-3 The Structure of Bone
Section 36-1
Spongy bone Compact bone Haversian canal Compact Periosteum bone
Bone marrow
Spongy bone Osteocyte Artery Periosteum Vein
Go to Section: Figure 36-4 Freely Movable Joints and Their Movements Section 36-1
Ball-and-Socket Joint Pivot Joint Clavicle Humerus Ball-and- Radius socket joint Pivot Hinge Joint joint Saddle Joint Scapula Ulna Humerus Femur Fibula Patella Metacarpals
Hinge Carpals Saddle joint joint Tibia
Go to Section: Figure 36-5 Knee Joint
Section 36-1
Muscle
Tendon
Femur
Patella Bursa Ligament Synovial fluid Cartilage
Fat
Fibula
Tibia
Go to Section: Section Outline
Section 36-2
36–2 The Muscular System A. Types of Muscle Tissue 1. Skeletal Muscles 2. Smooth Muscles 3. Cardiac Muscle B. Muscle Contraction C. Control of Muscle Contraction D. How Muscles and Bones Interact E. Exercise and Health
Go to Section: Cycle Diagram
Section 36-2
1 Myosin forms cross-bridge with actin
5 2 Myosin returns Cross-bridge to original changes shape shape
4 3
Cross-bridge Actin pulled releases actic
Go to Section: Figure 36-7 Skeletal Muscle Structure
Section 36-2
Go to Section: Figure 36-8 Muscle Contraction
Section 36-2
Relaxed Muscle
Z line Myosin Actin Z line Movement of Actin Filament Actin
Cross- Sarcomore Binding bridge sites
Contracted Muscle Myosin
Cross-bridges Z line
Go to Section: Figure 36-8 Muscle Contraction
Section 36-2
Relaxed Muscle
Z line Myosin Actin Z line Movement of Actin Filament Actin
Cross- Sarcomore Binding bridge sites
Contracted Muscle Myosin During muscle contraction, the knoblike head of a myosin filament attaches to a binding site on actin, forming Cross-bridges Z line a cross-bridge.
Go to Section: Figure 36-8 Muscle Contraction
Section 36-2
Relaxed Muscle
Z line Myosin Actin Z line Movement of Actin Filament Actin
Cross- Sarcomore Binding bridge sites
Contracted Muscle Myosin During muscle Powered by ATP, contraction, the the myosin cross- knoblike head of a bridge changes myosin filament shape and pulls attaches to a binding the actin filament site on actin, forming toward the center Cross-bridges Z line a cross-bridge. of the sarcomere.
Go to Section: Figure 36-8 Muscle Contraction
Section 36-2
Relaxed Muscle
Z line Myosin Actin Z line Movement of Actin Filament Actin
Cross- Sarcomore Binding bridge sites
Contracted Muscle Myosin During muscle Powered by ATP, The cross-bridge is contraction, the the myosin cross- broken, the myosin knoblike head of a bridge changes binds to another myosin filament shape and pulls site on the actin attaches to a binding the actin filament filament, and the site on actin, forming toward the center cycle begins again. Cross-bridges Z line a cross-bridge. of the sarcomere.
Go to Section: Figure 36-11 Opposing Muscle Pairs
Section 36-2
Movement Movement Biceps (relaxed) Biceps (contracted)
Triceps (relaxed) Triceps (relaxed)
Go to Section: Section Outline
Section 36-3
36–3 The Integumentary System A. The Skin 1. Epidermis 2. Dermis 3. Skin Cancer B. Hair and Nails 1. Hair 2. Nails
Go to Section: Concept Map
Section 36-3
Skin
functions is made as a up of the
Regulator of Protector Barrier to Remover of body against UV Epidermis Dermis infection waste products temperature radiation
which which is the is the
Outer layer Inner layer
Go to Section: Figure 36-13 The Structure of Skin
Section 36-3
Go to Section: Videos
Click a hyperlink to choose a video. Muscle Contraction, Part 1 Muscle Contraction, Part 2
Video Contents Video 1
Muscle Contraction, Part 1
Click the image to play the video segment.
Video 1 Video 2
Muscle Contraction, Part 2
Click the image to play the video segment.
Video 2 Go Online
Links from the authors on making artificial skin Interactive test
For links on bones and joints, go to www.SciLinks.org and enter the Web Code as follows: cbn-0361. For links on muscle contraction, go to www.SciLinks.org and enter the Web Code as follows: cbn-0362.
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