Body Organization and Organ Systems Intro (Grade A+)

Summary:

The summary provides an overview of the human body’s anatomy, organization, and function. It covers the different levels of organization, from cells to tissues. The four basic tissue types are discussed: epithelial tissue, nervous tissue, connective tissue, and muscle tissue.

Epithelial tissue protects the body’s outer surface and lines internal cavities and passageways. Nervous tissue coordinates movements through a complex motor control system and consists of neurons and neuroglia. Connective tissue provides structural and metabolic support to various organs, including bones, cartilage, ligaments, tendons, and blood tissue.

Bones are classified based on shape, with long, short, flat, irregular, and sesamoid bones identified. Joints are regions where bones meet and can be classified as fibrous, cartilaginous, or synovial joints based on the type and degree of movement they allow. Skeletal, smooth, and cardiac muscles are discussed, each with different functions and locations in the body.

The major organ systems in the human body are listed and briefly described, including the skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive systems. Terminology for different body parts and regions is also provided.

Excerpt:

Body Organization and Organ Systems Intro

Subject: Anatomy
Organization of the Body
Morphology – the study of parts and structure as it relates to function (physiology)
*function of a structure can often be determined by its design
Cells – a basic living unit of the body

• Intracellular fluid
  • Potassium, magnesium, and phosphate ions
• Extracellular fluid (Internal environment)
  • where the ions and nutrients needed by the cells to maintain life are found, thus forming the environment where all cells live =internal environment
  • Sodium, chloride, bicarbonate ions, nutrients (oxygen, glucose, fatty acids and amino acids)

Tissue – group of cells found throughout the body and serve the same function

Four basic classifications of tissues: (ENCM)
• Epithelial tissue
• Nervous tissue
• Connective tissue
• Muscle tissue

Epithelial Tissue
• Functions: protection for the outer surface of the body and lines of internal cavities and passageways, and forms certain glands
• Found in the body in 2 forms