the BIG idea

1. the BIG idea NEW CHAPTER Systems, Support, and Movement The human body is made up of systems that work together to perform necessary functions. 17.1 The human body is complex. 17.2 The skeletal system provides support and protection. 17.3 The muscular system makes movement possible.

2. You can think of the body as having five levels of organization: organ systems, and the whole organism itself. cells, tissues, organs, The different systems of the human body work together to maintain homeostasis. 1 5 Cells (cardiac muscle cells) Organism (human) 2 3 4 Organ system (circulatory system) Tissue (cardiac muscle) Organ (heart) The human body is complex. tissue organ organ system homeostasis

3. tissue tissue A group of similar cells that are organized to do a specific job. organ organ system organ homeostasis A structure in a plant or an animal that is made up of different tissues working together to perform a particular function. organ system A group of organs that together perform a function that helps the body meet its needs for energy and materials.

4. tissue organ homeostasis organ system A condition needed for health and functioning in which an organism or cell maintains a relatively stable internal environment. homeostasis

5. Angular Movement (elbow) The skeletal system provides support and protection. Bones are living tissue. The skeleton is the body's framework and has two main divisions, the axial skeleton and the appendicular skeleton. skeletal system Bones come together at joints.

6. skeletal system skeletal system The framework of bones that supports the body, protects internal organs, and anchors all the body’s movement.

7. The muscular system makes movement possible. muscular system Types of muscle Function skeletal muscle moves bones, maintains posture, maintains body temperature skeletal muscle, voluntary voluntary muscle smooth muscle smooth muscle, involuntary moves internal organs, such as the intestines involuntary muscle cardiac muscle cardiac muscle, involuntary pumps blood throughout the body

8. muscular system muscular system skeletal muscle The muscles of the body that, together with the skeletal system, function to produce movement. voluntary muscle smooth muscle skeletal muscle involuntary muscle A muscle that attaches to the skeleton. cardiac muscle voluntary muscle A muscle that can be moved at will.

9. muscular system smooth muscle skeletal muscle Muscle that performs involuntary movement and is found inside certain organs, such as the stomach. voluntary muscle smooth muscle involuntary muscle involuntary muscle A muscle that moves without conscious control. cardiac muscle cardiac muscle The muscle that makes up the heart.