Figure 5.1 Your skin is a vital part of your life and appearance (a–b). Some people choose to embellish it with tattoos (a) or makeup (b). (credit a: Steve Teo; credit b: “spaceodissey”/flickr) CHAPTER OBJECTIVES After studying the chapter, you will be…
Learning Objectives By the end of this section, you will be able to: Tissues of all types are vulnerable to injury and, inevitably, aging. In the former case, understanding how tissues respond to damage can guide strategies to aid repair.…
Learning Objectives By the end of this section, you will be able to: Nervous tissue is characterized as being excitable and capable of sending and receiving electrochemical signals that provide the body with information. Two main classes of cells make…
Learning Objectives By the end of this section, you will be able to: Muscle tissue is characterized by properties that allow movement. Muscle cells are excitable; they respond to a stimulus. They are contractile, meaning they can shorten and generate…
Learning Objectives By the end of this section, you will be able to: As may be obvious from its name, one of the major functions of connective tissue is to connect tissues and organs. Unlike epithelial tissue, which is composed…
Learning Objectives By the end of this section, you will be able to: Most epithelial tissues are essentially large sheets of cells covering all the surfaces of the body exposed to the outside world and lining the outside of organs.…
Learning Objectives By the end of this section, you will be able to: The term tissue is used to describe a group of cells found together in the body. The cells within a tissue share a common embryonic origin. Microscopic observation reveals…
Figure 4.1 Micrograph of Cervical Tissue This figure is a view of the regular architecture of normal tissue contrasted with the irregular arrangement of cancerous cells. (credit: “Haymanj”/Wikimedia Commons) CHAPTER OBJECTIVES After studying this chapter, you will be able to: The body contains…
Learning Objectives By the end of this section, you will be able to: How does a complex organism such as a human develop from a single cell—a fertilized egg—into the vast array of cell types such as nerve cells, muscle…
Learning Objectives By the end of this section, you will be able to: So far in this chapter, you have read numerous times of the importance and prevalence of cell division. While there are a few cells in the body…