Anatomy and Physiology: Support and Movement Course

Lesson 1 • Homeostasis and Feedback Mechanisms

Explains negative and positive feedback loops that maintain internal stability during movement. Connects regulatory physiology to muscle and bone adaptation responses.

Lesson 2 • Anatomical Terminology and Body Planes

Introduces directional terms, body planes, and regional nomenclature used throughout musculoskeletal anatomy. Precise language prevents errors in clinical and laboratory communication.

Lesson 3 • Levels of Structural Organization

Covers the six levels from chemical to organism, emphasizing how each level contributes to musculoskeletal function. Anchors all subsequent anatomical study in a unified framework.

Lesson 1 • Bone Classification and Surface Markings

Classifies bones by shape and catalogs surface markings such as processes, foramina, and fossae. Surface marking knowledge is prerequisite for skeletal anatomy identification.

Lesson 2 • Bone Matrix Composition

Details the organic collagen framework and inorganic hydroxyapatite mineral that give bone flexibility and rigidity. Understanding matrix composition explains bone strength and fracture behavior.

Lesson 3 • Bone Physiology and Remodeling

Explains ossification, remodeling cycles, and hormonal regulation of bone turnover. Connects cellular activity to systemic calcium homeostasis and mechanical loading adaptation.

Lesson 4 • Bone Cell Types and Roles

Identifies osteogenic cells, osteoblasts, osteocytes, and osteoclasts and their coordinated roles in bone formation and resorption. Cell activity underpins remodeling discussed in later sections.

Lesson 1 • Vertebral Column Structure and Curvatures

Describes the five vertebral regions, typical vertebral anatomy, and primary versus secondary curvatures. Curvature mechanics directly affect load distribution during standing and movement.

Lesson 2 • Skull Bones and Cranial Fossae

Maps the eight cranial and fourteen facial bones, sutures, and internal cranial fossae. Skull architecture provides the protective housing for the brain and sensory organs.

Lesson 3 • Thoracic Cage Anatomy

Identifies the sternum, twelve pairs of ribs, and their costal cartilage attachments. The thoracic cage protects thoracic organs and anchors respiratory muscles.

Lesson 1 • Arches of the Foot

Explains the medial longitudinal, lateral longitudinal, and transverse arches and their ligamentous support. Arch mechanics distribute body weight and absorb locomotor impact forces.

Lesson 2 • Lower Limb Bones and Landmarks

Describes the femur, patella, tibia, fibula, tarsals, metatarsals, and phalanges with weight-bearing adaptations. Lower limb bones are optimized for stability and locomotion under gravitational load.

Lesson 3 • Pectoral Girdle and Upper Limb

Covers the clavicle, scapula, humerus, radius, ulna, carpals, metacarpals, and phalanges. Upper limb design prioritizes mobility, enabling the wide range of hand and arm movements.

Lesson 1 • Joint Stability and Injury Factors

Analyzes how articular surface shape, ligaments, and muscle tone collectively determine joint stability. Understanding stability factors is foundational for injury prevention and rehabilitation contexts.

Lesson 2 • Structural Joint Classification

Distinguishes fibrous, cartilaginous, and synovial joints by the material uniting the bones. Structural classification predicts the degree of movement each joint permits.

Lesson 3 • Synovial Joint Types and Movements

Classifies the six synovial joint subtypes and catalogs angular, rotational, and special movements. Movement terminology is essential for describing musculoskeletal actions in clinical contexts.

Lesson 4 • Synovial Joint Anatomy in Detail

Examines articular cartilage, synovial membrane, joint capsule, bursae, and accessory ligaments. Each component contributes to lubrication, stability, or shock absorption in diarthrotic joints.

Lesson 1 • Muscle Contraction Types and Mechanics

Distinguishes isotonic concentric, isotonic eccentric, and isometric contractions and their force-velocity relationships. Contraction type selection determines functional outcomes in movement and posture.

Lesson 2 • Skeletal Muscle Fiber Microstructure

Details the sarcomere, myofilaments, T-tubules, and sarcoplasmic reticulum within a muscle fiber. Microstructural knowledge is the prerequisite for understanding the sliding filament mechanism.

Lesson 3 • Neuromuscular Junction and Excitation

Describes acetylcholine release, motor end plate depolarization, and action potential propagation along the sarcolemma. This excitation step initiates the calcium release that triggers contraction.

Lesson 4 • Motor Units and Muscle Fiber Types

Defines the motor unit and compares slow-twitch, fast-twitch oxidative, and fast-twitch glycolytic fiber types. Fiber type composition determines a muscle's endurance and power capabilities.

Lesson 1 • Hip, Thigh, and Leg Muscles

Identifies gluteal muscles, quadriceps, hamstrings, adductors, and leg compartment muscles with their actions. Lower limb muscle groups drive locomotion, stair climbing, and postural stabilization.

Lesson 2 • Muscle Architecture and Naming Conventions

Explains pennation angles, fascicle arrangements, and the naming criteria used for skeletal muscles. Architecture determines force production capacity and shortening velocity of each muscle.

Lesson 3 • Shoulder and Upper Limb Muscles

Maps the rotator cuff, deltoid, elbow flexors and extensors, and forearm and hand intrinsic muscles. Upper limb muscle knowledge supports analysis of reaching, gripping, and throwing movements.

Lesson 4 • Head, Neck, and Trunk Muscles

Identifies muscles of facial expression, mastication, neck movement, and the deep back and abdominal wall. These muscles control posture, respiration, and craniofacial movement.

Lesson 1 • Lever Systems and Mechanical Advantage

Applies first-, second-, and third-class lever principles to musculoskeletal movement examples. Lever analysis quantifies the mechanical advantage or disadvantage of specific muscle-joint arrangements.

Lesson 2 • Posture and Spinal Load Distribution

Evaluates static and dynamic postural alignment and the compressive forces acting on spinal segments. Postural mechanics explain common musculoskeletal pain patterns and injury risk factors.

Lesson 3 • Skeletal and Muscular Adaptations to Exercise

Describes bone remodeling responses to mechanical loading and muscle hypertrophy and atrophy mechanisms. Adaptation principles guide exercise prescription for strength, endurance, and bone health.

Lesson 4 • Gait Cycle and Locomotion Mechanics

Breaks down the stance and swing phases of walking and running, identifying active muscles at each phase. Gait analysis integrates all prior anatomical knowledge into a functional movement sequence.