Lesson 5 Basics of Body Structure Objectives Define

Lesson 5 Basics of Body Structure

Objectives: • Define tissue, organ, and system • Distinguish between different types of tissue • Identify organs of the body • Organize the levels of the body’s structure

Cells differ in shape, size and function even though they mostly have the same basic parts. Cells with similar structure and function can join together to create tissue. Tissue joins together to create organs. Organs group together to form organ systems that work together to perform a specific job in the body.

Tissue is formed when cells of the same type join to perform a common task. Four Major Tissue Groups: Epithelial tissue – covers internal and external body structures and forms glands.

Tissue is formed when cells of the same type join to perform a common task. Four Major Tissue Groups: Connective tissue – provides structure and support for the body and helps hold organs in place in their body cavities. • Loose connective • Fibrous connective • Adipose tissue • Cartilage • Bone • Blood

Tissue is formed when cells of the same type join to perform a common task. Four Major Tissue Groups: Muscle tissue – Muscle tissue contracts to allow the body to move.

Tissue is formed when cells of the same type join to perform a common task. Four Major Tissue Groups: Nervous tissue – carries messages throughout the body to direct its activities.

An organ is formed when groups of tissue work together to perform a specific function.

An organ system consists of a collection of organs and other body parts that work together to carry out one of the body’s major functions. Major Body Systems: • Integumentary system • Skeletal system • Muscular system • Nervous system • Sensory system • Cardiovascular system • Lymphatic system • Respiratory system • Digestive system • Urinary system • Endocrine system • and Reproductive system

Summary Objectives: • Define tissue, organ, and system • Distinguish between different types of tissue • Identify organs of the body • Organize the levels of the body’s structure