Chapter 15 Table of Contents Section 1 Body Organization Body Organization and Structure Table of Contents Section 1 Body Organization Section 2 The Skeletal System Section 3 The Muscular System
Chapter 15 Section 1 Body Organization Bellringer In your Science Journal, match each organ system with its correct function. Organ systems: respiratory system, muscular system, digestive system, cardiovascular system Functions: to pump blood, to enable movement, to send out chemical messages, to absorb oxygen, to break down food.
Chapter 15 What You Will Learn Section 1 Body Organization What You Will Learn The levels of organization in the human body include cells, tissues, organs, organ systems, and the organism. Human cells are differentiated to perform specific jobs in the body. There are 11 human organ systems. Organ systems work together to maintain homeostasis. The failure of one organ system affects the entire body.
Chapter 15 A Stable Environment Section 1 Body Organization A Stable Environment Cells, tissues, and organs work together to maintain a stable environment inside the body. The maintenance of a stable environment inside the body is called homeostasis. When homeostasis is not maintained, cells may not function properly or die.
Cells, Tissues, and Organs Chapter 15 Section 1 Body Organization Cells, Tissues, and Organs Most cells in your body are differentiated. Differentiated cells are specialized to perform specific functions for the body. The structure of each cell is related to its function. Similar cells are organized into groups. A group of similar cells working together to perform a common function forms a tissue.
Cells, Tissues, and Organs, continued Chapter 15 Section 1 Body Organization Cells, Tissues, and Organs, continued Your body has four main kinds of tissue: epithelial tissue, nervous tissue, muscle tissue, and connective tissue. Epithelial tissue covers and protects underlying tissue. Your skin is primarily epithelial tissue. Nervous tissue sends electrical signals through the body. It is found in the brain, nerves, and sense organs.
Cells, Tissues, and Organs, continued Chapter 15 Section 1 Body Organization Cells, Tissues, and Organs, continued Muscle tissue is made of cells that contract and relax to produce movement. Connective tissue supports and protects the organs of the body. Connective tissue holds everything in its proper place.
Chapter 15 Body Organization and Structure Body Tissues
Cells, Tissues, and Organs, continued Chapter 15 Section 1 Body Organization Cells, Tissues, and Organs, continued Two or more types of tissues working together to carry out a function form an organ. The heart is an organ made of muscle, connective, and epithelial tissues. None of these tissues alone could carry out the function of the heart. The stomach is another organ made up of four different tissues.
Chapter 15 Section 1 Body Organization
Cells, Tissues, and Organs, continued Chapter 15 Section 1 Body Organization Cells, Tissues, and Organs, continued Two or more organs working together to carry out a function form an organ system. Organ systems perform jobs that organs cannot perform by themselves.
Chapter 15 Section 1 Body Organization
Chapter 15 Section 1 Body Organization
Chapter 15 Section 1 Body Organization
Organ Systems Working Together Chapter 15 Section 1 Body Organization Organ Systems Working Together Your body’s organ systems work together to maintain homeostasis. For example, the cardiovascular system and respiratory system work together to provide oxygen to all cells of the body. Some organs are part of more than one organ system.