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The Appendicular Skeleton: Bones of the Limbs and Girdles Study Guide

This guide explores the appendicular skeleton, a crucial component of the human body responsible for movement and manipulation. It covers the structure and function of the pectoral girdle (clavicles and scapulae), the upper limbs (humerus, ulna, radius, carpals, metacarpals, and phalanges), the pelvic girdle (ilium, ischium, and pubis), and the lower limbs (femur, patella, tibia, fibula, tarsals, metatarsals, and phalanges). Understanding the appendicular skeleton is fundamental to grasping huma

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Organization and Functions of the Skeletal System

The Skeletal System Overview

Overview of the organization and functions of the skeleton, including classification of bones and cartilages of the human body.

  • Hyaline cartilage
  • Elastic cartilage
  • Fibrocartilage
  • Bone functions
  • Support
  • Protection
  • Leverage
  • Mineral storage
  • Lipid storage
  • Blood cell formation

The Appendicular Skeleton and Upper Limbs

The Appendicular Skeleton and Upper Limbs

The appendicular skeleton includes the pectoral girdle, upper limbs, and bones of the forearm, wrist, hand, and fingers.

  • Pectoral Girdle
  • Clavicles
  • Scapulae
  • Humerus
  • Ulna
  • Radius
  • Carpal Bones
  • Metacarpal Bones
  • Phalanges
  • Coracoid process
  • Acromion of scapula
  • Greater and lesser tubercles
  • Intertubercular groove
  • Deltoid tuberosity
  • Coronoid process
  • Styloid process
  • Radial tuberosity

The Axial Skeleton and Bone Anatomy

The Axial Skeleton and Bone Anatomy

This material covers the functions of the skeletal system, bone cell types, bone classifications, and common bony landmarks.

  • Osteoprogenitor cells
  • Osteoblasts
  • Osteocytes
  • Osteoclasts
  • Compact bone
  • Spongy bone
  • Bone classification
  • Bony landmarks
  • Articular surface
  • Bone growth and repair

Bone Histology and Microscopic Structure

Bone Histology and Microscopic Structure

This content examines bone histology, including compact and spongy bone, bone membranes, bone cell types, and the bone matrix.

  • Compact bone
  • Spongy bone
  • Osteon
  • Trabeculae
  • Periosteum
  • Endosteum
  • Osteoprogenitor cells
  • Osteoblasts
  • Osteocytes
  • Osteoclasts
  • Bone Matrix
  • Matrix Proteins
  • Mineral salts
  • Haversian canal
  • Volkmann’s canals
  • Lacunae
  • Canaliculi
  • Red bone marrow
  • Yellow bone marrow

Processes and Developmental Aspects of Bone Formation

Bone Formation and Ossification Processes

Bone formation or osteogenesis occurs through intramembranous and endochondral ossification involving mesenchymal cells, hyaline cartilage, and calcification.

  • Osteogenesis
  • Ossification
  • Calcification
  • Intramembranous ossification
  • Endochondral ossification
  • Mesenchymal cells
  • Hyaline cartilage
  • Osteoblasts
  • Chondrocytes
  • Spongy bone
  • Compact bone
  • Epiphyseal lines
  • Nutrient artery and vein
  • Metaphyseal vessels
  • Periosteal vessels

Bone Shapes, Structures, and Fracture Classifications

Classification and Types of Bone Fractures

Bone fractures are classified by the position of the bone ends, the completeness of the break, the orientation to the long axis, and whether bone ends penetrate the skin.

  • Displaced and nondisplaced fractures
  • Complete and incomplete fractures
  • Closed and open (compound) fractures
  • Linear, transverse, oblique, and spiral fractures
  • Comminuted fractures
  • Compression and depressed fractures
  • Epiphyseal fractures
  • Greenstick fractures
  • Avulsed fractures

The Four Steps of Fracture Repair

Skeletal System Bone Repair Processes

Bone repair involves fracture hematoma formation, callus stabilization by endosteum and periosteum cells, and remodeling by osteoblasts and osteocytes.

  • Fracture hematoma
  • Endosteum
  • Periosteum
  • External callus
  • Internal callus
  • Osteoblasts
  • Osteocytes
  • Bone remodeling

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