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Anatomy Weeks 6-12
Question | Answer |
---|---|
What is the primary function of the alveoli in the respiratory system? | The alveoli facilitate gas exchange by allowing oxygen to diffuse into the blood and carbon dioxide to diffuse out. |
What is the role of the small intestine in digestion? | The small intestine is responsible for nutrient absorption and further chemical digestion of food using enzymes from the pancreas and bile from the liver. |
What are the three main processes involved in urine formation? | The three main processes are filtration, reabsorption, and secretion. |
Which gland is known as the "master gland" and why? | The pituitary gland is called the "master gland" because it controls other endocrine glands and regulates critical body functions. |
What are the main components of blood? | Blood is composed of plasma, red blood cells, white blood cells, and platelets. |
What is the role of the sinoatrial (SA) node? | The SA node, known as the heart's natural pacemaker, initiates electrical impulses that regulate the heartbeat. |
What are the three main types of blood vessels, and their primary functions? | Arteries carry blood away from the heart, veins return blood to the heart, and capillaries facilitate gas and nutrient exchange. |
What is the function of lymph nodes? | ymph nodes filter lymph, trapping pathogens and producing lymphocytes to fight infections. |
What is the role of antibodies in immunity? | Antibodies bind to specific antigens to neutralize or mark them for destruction by immune cells. |
What is the function of the rods and cones in the retina? | Rods detect light and dark, enabling vision in low light, while cones detect color and detail in bright light. |