Learning Objectives By the end of this section, you will be able to: Cardiac muscle tissue is only found in the heart. Highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system. Similar to skeletal…
Learning Objectives By the end of this section, you will be able to: Physical training alters the appearance of skeletal muscles and can produce changes in muscle performance. Conversely, a lack of use can result in decreased performance and muscle…
Learning Objectives By the end of this section, you will be able to: Two criteria to consider when classifying the types of muscle fibers are how fast some fibers contract relative to others, and how fibers produce ATP. Using these…
Learning Objectives By the end of this section, you will be able to: To move an object, referred to as load, the sarcomeres in the muscle fibers of the skeletal muscle must shorten. The force generated by the contraction of…
Learning Objectives By the end of this section, you will be able to: The sequence of events that result in the contraction of an individual muscle fiber begins with a signal—the neurotransmitter, ACh—from the motor neuron innervating that fiber. The…
Learning Objectives By the end of this section, you will be able to: The best-known feature of skeletal muscle is its ability to contract and cause movement. Skeletal muscles act not only to produce movement but also to stop movement,…
Learning Objectives By the end of this section, you will be able to: Muscle is one of the four primary tissue types of the body, and the body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth…
Figure 10.1 Tennis Player Athletes rely on toned skeletal muscles to supply the force required for movement. (credit: Emmanuel Huybrechts/flickr) CHAPTER OBJECTIVES After studying this chapter, you will be able to: When most people think of muscles, they think of the muscles that…
Classification of Joints Structural classifications of the body joints are based on how the bones are held together and articulate with each other. At fibrous joints, the adjacent bones are directly united to each other by fibrous connective tissue. Similarly,…
Learning Objectives By the end of this section, you will be able to: Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilages, and…