bio

• Organ systems


  Groups of organs working together to perform specific functions in the body
• Main organ systems in the human body

  • Nervous System
  • Circulatory System (Cardiovascular System)
  • Respiratory System
  • Digestive System
  • Muscular System
  • Skeletal System
  • Endocrine System
  • Immune System
  • Integumentary System
  • Urinary System
• Nervous System


  • Responsible for coordinating the body's responses to internal and external stimuli
  • Includes the brain, spinal cord, and peripheral nerves
• Circulatory System (Cardiovascular System)


  • Responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body
  • Includes the heart, blood vessels, and blood
• Respiratory System


  • Responsible for the exchange of gases (oxygen and carbon dioxide) between the body and the environment
  • Includes the lungs, trachea, bronchi, and diaphragm
• Digestive System


  • Responsible for breaking down food into nutrients that can be absorbed by the body and eliminating waste
  • Includes the mouth, esophagus, stomach, intestines, liver, gallbladder, and pancreas
• Muscular System


  • Responsible for movement, posture, and heat production
  • Includes skeletal muscles, smooth muscles, and cardiac muscles
• Skeletal System


  • Provides structural support and protection for the body's organs
  • Includes bones, cartilage, ligaments, and tendons
• Endocrine System


  • Regulates bodily functions through the secretion of hormones
  • Includes glands such as the pituitary gland, thyroid gland, adrenal glands, pancreas, and gonads
• Immune System


  • Defends the body against pathogens and foreign substances
  • Includes white blood cells, lymph nodes, the spleen, thymus, and bone marrow
• Integumentary System


  • Protects the body from external damage, regulates temperature, and prevents water loss
  • Includes the skin, hair, nails, and sweat glands
• Reproductive System


  Responsible for the production of gametes (sperm in males, eggs in females) and the development of offspring. It includes organs such as the testes, ovaries, uterus, fallopian tubes, and external genitalia.
• Urinary System


  • Removes waste products from the blood and regulates fluid balance, electrolyte balance, and pH
  • Includes the kidneys, ureters, bladder, and urethra
• These organ systems work together in a coordinated manner to maintain homeostasis and ensure the overall health and functioning of the human body
• Lymphatic System


  Works closely with the immune system to help protect the body from pathogens and maintain fluid balance. It includes lymph nodes, lymphatic vessels, the thymus, spleen, and lymphatic tissue.