bio human body system

• What is the relationship between cells, tissues, and organs?

  Cells make up tissues, and tissues make up organs.
• What is the function of DNA in cells?


  It carries the whole DNA code for the organism.
• How do organ systems interact with each other?

  They work together as part of a big team.
• What are the 11 major human body systems?

  1. Circulatory System
  2. Digestive System
  3. Endocrine System
  4. Excretory System
  5. Integumentary System
  6. Lymphatic and Immune System
  7. Muscular System
  8. Nervous System
  9. Reproductive System

  10. Respiratory System

  11. Skeletal System
• What is the primary function of the circulatory system?

  To transport blood, which carries gases and nutrients.
• What are the four chambers of the heart?

  Right atrium, right ventricle, left atrium, and left ventricle.
• What is the role of valves in the heart?


  To prevent backflow of blood.
• What do arteries, veins, and capillaries do?

  Arteries carry blood away from the heart, veins carry blood back to the heart, and capillaries are tiny blood vessels throughout the body.
• What is a common misconception about blood color?

  That blood is blue and turns red when it reaches oxygen.
• What is the primary function of the digestive system?

  To break down and absorb food for nutrients.
• Where does digestion begin?

  In the mouth.
• What structures in the small intestine help absorb nutrients?

  Villi and microvilli.
• What is the major function of the large intestine?

  To reabsorb water from the digestive process.
• What is the role of the endocrine system?

  To secrete hormones that act as messengers in the body.
• What is an example of a hormone produced by the endocrine system?

  Growth hormone.
• What are the two major functions of the excretory system?

  Maintaining osmotic balance and ridding the body of metabolic wastes.
• What is metabolic waste?

  Waste products from metabolic processes, such as carbon dioxide and urea.
• Which organs are primarily involved in the excretory system?

  The kidneys, bladder, ureters, and urethra.
• What is the function of the kidneys?

  To remove wastes from the blood.
• What is the largest organ of the body?

  The skin.
• What are the layers of the skin?

  Epidermis, dermis, and hypodermis.
• What does the lymphatic system do?

  It collects, filters, and returns lymph to the blood.
• What is the role of lymph nodes in the immune system?


  They swell during illnesses and help filter lymph.
• What are the three major types of muscle tissue?

  Skeletal, smooth, and cardiac muscle.
• What is the primary function of the nervous system?

  To coordinate actions in the body.
• What are the two regions of the nervous system?

  Central nervous system and peripheral nervous system.
• What are neurons and glia?

  Neurons are specialized cells for communication, and glia support them.
• What is the major function of the reproductive system?

  To allow for reproduction.
• What are gonads?


  Reproductive organs that produce gametes.
• What is the primary function of the respiratory system?

  To allow for the intake of oxygen and exhaling carbon dioxide.
• Where does gas exchange occur in the respiratory system?

  In the alveoli of the lungs.
• Why do alveoli have thin walls and a large surface area?

  To facilitate gas exchange.
• How many bones do adult humans have?

  206 bones.
• What are the two divisions of the human skeleton?

  Axial skeleton and appendicular skeleton.
• How do the body systems interact when racing a friend down the hall?

  The respiratory system increases breathing rate, and the circulatory system delivers oxygen to muscles.
• Why is it important to understand how the human body works?


  To figure out what to do when things go wrong.
• What are the key interactions of body systems during physical activity?

  • Respiratory system increases breathing rate.
  • Circulatory system transports oxygen to tissues.
  • Muscular system works with skeletal system for movement.
• What is the main takeaway about the human body systems?

  They work together continuously to allow for bodily functions.