Circulatory system

• What is the circulatory system also known as?

  The cardiovascular system
• What is the primary function of the circulatory system?

  To transport blood, oxygen, and nutrients throughout the body
• What are the four main components of the circulatory system?

  - The heart - Blood vessels - Blood - The lymphatic system
• How do the components of the circulatory system work together?

  They maintain homeostasis, fight diseases, and keep the body functioning properly
• What is the heart's primary role in the circulatory system?

  To pump oxygenated blood to the body's tissues
• How many chambers does the heart have?

  Four chambers
• What are the main functions of the heart?

  The heart pumps oxygenated blood, receives deoxygenated blood, pumps deoxygenated blood to the lungs, and receives oxygenated blood from the lungs
• What is the function of the septum in the heart?

  The septum divides the heart into right and left sides
• What are the four chambers of the heart?

  - Right atrium - Right ventricle - Left atrium - Left ventricle
• What are the three main types of blood vessels?

  Arteries, veins, and capillaries
• What is the role of valves in the heart?

  Valves ensure blood flows in the correct direction
• What is the primary function of arteries?

  To carry oxygenated blood away from the heart
• What is the primary function of veins?

  To return deoxygenated blood to the heart
• How do arteries differ from veins in terms of structure?

  Arteries have thick, elastic walls, while veins have thinner walls and contain valves
• What is the primary function of capillaries?

  To allow exchange of nutrients and waste between blood and body tissues
• What is the relationship between the lymphatic system and the circulatory system?

  The lymphatic system works alongside the circulatory system to maintain fluid balance and support immune function
• What is the role of lymphoid organs?

  To support immune function and produce immune cells
• What is the function of lymph vessels?

  To transport lymph fluid
• What is the role of lymph nodes in the lymphatic system?

  To filter lymph and trap pathogens
• How does the lymphatic system complement the circulatory system?

  By returning fluid to the bloodstream and helping maintain fluid balance
• What is the primary function of the lymphatic system?


  To drain excess fluid from tissues and support immune function
• What are the main components of the lymphatic system?

  - Lymph vessels - Lymph nodes - Lymphoid organs (spleen, thymus, tonsils)
• What are the functions of blood?

  - Transporting oxygen and nutrients - Removing waste products - Regulating body temperature - Fighting diseases
• What is plasma?


  The liquid portion of blood, making up about 55% of blood volume
• What is the function of platelets?

  To assist in blood clotting
• What is the function of white blood cells?

  To fight infections as part of the immune system
• What is the function of red blood cells?

  To carry oxygen to tissues
• What are the components of blood?

  - Plasma - Red blood cells (erythrocytes) - White blood cells (leukocytes) - Platelets (thrombocytes)
• What type of waste does the excretory system remove?

  Metabolic waste
• How does the excretory system help maintain homeostasis?

  By regulating the balance of water, salts, and other compounds in the body
• What is the excretory system responsible for?

  Removing waste products and excess substances from the body
• What are the three key functions of the excretory system?

  Removing metabolic waste, maintaining fluid balance, and regulating blood composition
• What are the main organs of the excretory system?

  - Kidneys: Filter blood and produce urine - Ureters: Carry urine from kidneys to bladder - Bladder: Stores urine - Urethra: Carries urine out of the body
• What is the function of the kidneys in the excretory system?

  To filter blood and produce urine
• What do the ureters do?

  They carry urine from the kidneys to the bladder
• What is the role of the bladder?

  To store urine until it is ready to be expelled
• What are the additional organs involved in waste removal besides the kidneys?

  - Skin: Removes waste through sweat - Lungs: Expel carbon dioxide and water vapor - Liver: Processes toxins and produces urea
• What is the primary function of the kidneys?

  To filter blood and remove waste products
• What does the urethra do?

  It carries urine from the bladder out of the body
• What waste products do the kidneys remove?

  Urea and creatinine