tailieunhanh - Lecture Medical assisting: Administrative and clinical procedures with anatomy and physiology (4/e) – Chapter 22

Chapter 22 - The muscular system. This chapter focuses on the differences among three muscle tissue types, the structure of skeletal muscles, muscle actions, and the names of skeletal muscles. | 22 The Muscular System 22- Learning Outcomes List the functions of muscle. List the three types of muscle tissue and describe the locations and characteristics of each. Describe how visceral (smooth) muscle produces peristalsis. Explain how muscle tissue generates energy. 22- Learning Outcomes (cont.) Describe the structure of a skeletal muscle. Define the terms origin and insertion. List and define the various types of body movements produced by skeletal muscles. List and identify the major skeletal muscles of the body, giving the action of each. 22- Learning Outcomes (cont.) Explain the differences between strain and sprain injuries. Describe the changes that occur to the muscular system as a person ages. Describe the causes, signs and symptoms, and treatments of various diseases and disorders of the muscular system. 22- Introduction Bones and joints do not produce movement The human body has more than 600 | 22 The Muscular System 22- Learning Outcomes List the functions of muscle. List the three types of muscle tissue and describe the locations and characteristics of each. Describe how visceral (smooth) muscle produces peristalsis. Explain how muscle tissue generates energy. 22- Learning Outcomes (cont.) Describe the structure of a skeletal muscle. Define the terms origin and insertion. List and define the various types of body movements produced by skeletal muscles. List and identify the major skeletal muscles of the body, giving the action of each. 22- Learning Outcomes (cont.) Explain the differences between strain and sprain injuries. Describe the changes that occur to the muscular system as a person ages. Describe the causes, signs and symptoms, and treatments of various diseases and disorders of the muscular system. 22- Introduction Bones and joints do not produce movement The human body has more than 600 individual muscles Muscles cause bones and supported structures to move by alternating between contraction and relaxation You will focus on the differences among three muscle tissue types, the structure of skeletal muscles, muscle actions, and the names of skeletal muscles. 22- Functions of Muscle Muscle has the ability to contract, permitting muscles to perform various functions Functions: Movement Stability Control of body openings and passages Heat production Click for Larger View 22- Skeletal Muscle 22- Movement Skeletal muscles Attached to bones by tendons Cross joints so when they contract, bones they attach to move Smooth muscle Found on organ walls Contractions produce movement of organ contents Cardiac muscle Produces atrial and ventricular contractions This pumps blood from the heart into the blood vessels 22- Stability Hold bones tightly together Stabilize joints Small muscles hold vertebrae together Stabilize the spinal column 22- Control of Body .