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Discover the structures, parts, and functions of the skeletal system, including bones, bone marrow, cartilage, joints, ligaments, synovial membrane, and more. Learn about key word parts and definitions related to bone health and anatomy. Test your knowledge with engaging questions!
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The Skeletal System Chapter 3
Overview of Structures, Combining Forms,and Functions of the Skeletal System
Bones • Primary Function • Act as the framework for the body • Protect the internal organs • Store the mineral calcium • Related Word Parts (Combining Forms) • oss/e, oss/i • oste/o, ost/o (continues)
Bones • Typical Long Bone (continues)
Bones (continues)
Bones (continues)
Bones (continues)
Bones (continues)
Bones (continues)
Bone Marrow • Primary Function • Red bone marrow forms some blood cells. • Yellow bone marrow stores fat. • Related Word Parts (Combining Forms) • myel/o (also means spinal cord)
Cartilage • Primary Function • Creates a smooth surface for motion withinthe joints • Protects the ends of the bones • Related Word Parts (Combining Forms) • chondr/o
Joints • Primary Function • Work with the muscles to make a variety ofmotions possible • Related Word Parts (Combining Forms) • arthr/o (continues)
Ligaments • Primary Function • Connect one bone to another • Related Word Parts (Combining Forms) • ligament/o (continues)
Synovial Membrane • Primary Function • Forms the lining of synovial joints • Secretes synovial fluid • Related Word Parts (Combining Forms) • synovi/o, synov/o
Synovial Fluid • Primary Function • Lubricant that makes smooth joint movementspossible • Related Word Parts (Combining Forms) • synovi/o, synov/o
Bursa • Primary Function • Cushions areas of joints that are subject tofriction during movement • Related Word Parts (Combining Forms) • burs/o
Key Word Parts and Definitions • ankyl/o • crooked, bent, stiff • arthr/o • joint • chondr/i, chondr/o • cartilage • cost/o • rib (continues)
Key Word Parts and Definitions • crani/o • skull • -desis • to bind, tie together • kyph/o • bent, hump • lord/o • curve, swayback bent (continues)
Key Word Parts and Definitions • -lysis • loosening or setting free • myel/o • spinal cord, bone marrow • oss/e, oss/i, ost/o, oste/o • bone • scoli/o • curved, bent (continues)
Key Word Parts and Definitions • spondyl/o • vertebrae, vertebral column, backbone • synovi/o, synov/o • synovial membrane, synovial fluid • -um • singular noun ending
Question • There are 15 phalanges (finger bones) in ahuman hand. • True or False?
Answer • False. The human hand has 14 phalanges.
Question • Nearly one fourth of all human bones can befound in the feet. • True or False?
Answer • True
Question • Babies are born with 300 bones, but by adulthood,we have only 206. • True or False?
Answer • True
Question • The largest bone in the human body is the: • femur • pelvis • fibula
Answer • a. the femur (thigh bone)