The Ball Joint
THE BALL-AND-SOCKET JOINT 1
The Ball-and-Socket Joint
HCS/230
January 10, 2011
Dr. Mike Liang
THE BALL-AND-SOCKET JOINT 2
The Ball-and-Socket Joint
Joints are essential in allowing movement of the human body. They are located at the intersection of bones, and their structures determine the type of movement that will occur at that location. Each joint contains components of the skeletal and muscular systems and connective tissues that function together to allow movement to occur. A ball-and-socket joint is one example of a synovial joint. In a ball-and-socket joint, the round head of one bone rests within a cup-shaped depression in another bone (Martini and Bartholomew, 2010). This joint is found in the shoulder and hip of the body, and allows the arm and leg to move in a 360 degree angle. This paper will closely examine the ball-and-socket joint in relations to the components from the skeletal system, muscular system, and connective tissues that enable the joint to function.
The Skeletal System
The skeletal system contains 206 bones organized into an internal framework called the endoskeleton. The main functions of the skeletal system are to provide support for muscle and organs, give shape and structure to the body, and to protect soft tissues and organs. Bones in the skeleton also store minerals and energy reserves and manufacture blood cells (Martini & Barthelomew, 2010). The skeleton is composed of two main parts: the axial skeleton, which consists of 80 bones such as the ribs, spine, and cranium, and the appendicular skeleton, made up of 126 bones, such as the arms, legs, pelvis, and shoulder (Patts, 2001). Bones contain a tough outer membrane called a periosteum. This membrane is made up of a network of blood vessels that supply bone cells with oxygen and nutrients and remove carbon dioxide. Under the periosteum
The Ball-and-Socket Joint
HCS/230
January 10, 2011
Dr. Mike Liang
THE BALL-AND-SOCKET JOINT 2
The Ball-and-Socket Joint
Joints are essential in allowing movement of the human body. They are located at the intersection of bones, and their structures determine the type of movement that will occur at that location. Each joint contains components of the skeletal and muscular systems and connective tissues that function together to allow movement to occur. A ball-and-socket joint is one example of a synovial joint. In a ball-and-socket joint, the round head of one bone rests within a cup-shaped depression in another bone (Martini and Bartholomew, 2010). This joint is found in the shoulder and hip of the body, and allows the arm and leg to move in a 360 degree angle. This paper will closely examine the ball-and-socket joint in relations to the components from the skeletal system, muscular system, and connective tissues that enable the joint to function.
The Skeletal System
The skeletal system contains 206 bones organized into an internal framework called the endoskeleton. The main functions of the skeletal system are to provide support for muscle and organs, give shape and structure to the body, and to protect soft tissues and organs. Bones in the skeleton also store minerals and energy reserves and manufacture blood cells (Martini & Barthelomew, 2010). The skeleton is composed of two main parts: the axial skeleton, which consists of 80 bones such as the ribs, spine, and cranium, and the appendicular skeleton, made up of 126 bones, such as the arms, legs, pelvis, and shoulder (Patts, 2001). Bones contain a tough outer membrane called a periosteum. This membrane is made up of a network of blood vessels that supply bone cells with oxygen and nutrients and remove carbon dioxide. Under the periosteum