Human Anatomy and Body Systems

• Cell - The basic unit of life
• Tissues – Clusters of cells performing a similar function.
• Organs – Made of tissues that perform one specific function.
• Organ Systems – Groups of organs that perform a specific purpose in the human body.
• The purpose of the 11 organ systems is for the human body to maintain homeostasis.
• Muscle Tissue - most abundant tissue controls internal movement digestion, blood through veins external movement of body.
• Epithelial Tissue - covering for body & organs linings of organs & vessels
• Connective Tissue - holds organs in place ligaments, tendons, some keep organs in place
• Nervous Tissue - receives messages from body’s internal and external messages analyze data & direct response
• The 11 human body systems are as follows:

  1. Nervous system
  2. Integumentary system
  3. Respiratory system
  4. Digestive system
  5. Excretory system
  6. Skeletal system
  7. Muscular system
  8. Circulatory system
  9. Endocrine system
  10. Reproductive system
  11. Lymphatic (immune) system