Human Body Basics

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1. Which organ acts as the muscular pump of the circulatory system?

   • Liver
   • Heart
   • Lung
   • Kidney

2. In which organs does oxygen pass from inhaled air into the blood?

   • Kidneys
   • Stomach
   • Brain
   • Lungs

3. Which pair of organs removes wastes and excess water from blood to make urine?

   • Kidneys
   • Pancreas
   • Lungs
   • Intestines

4. Which organ interprets sensory information and coordinates most voluntary actions?

   • Heart
   • Liver
   • Brain
   • Spleen

5. After blood glucose rises, which organ releases the hormone insulin?

   • Thyroid gland
   • Pancreas
   • Gallbladder
   • Adrenal gland

6. Bile made by the liver is concentrated and stored in which small organ?

   • Appendix
   • Pancreas
   • Spleen
   • Gallbladder

7. Air leaving the larynx travels down which tube before entering the bronchi?

   • Trachea
   • Esophagus
   • Ureter
   • Aorta

8. A tendon forms which connection in the musculoskeletal system?

   • Bone to bone
   • Nerve to muscle
   • Muscle to bone
   • Skin to muscle

9. The malleus, incus, and stapes—the body’s three smallest bones—are found in which region?

   • Inner ear
   • Middle ear
   • Nasal cavity
   • Upper spine

10. Which organ synthesizes most of the proteins circulating in blood plasma, including albumin?

    • Kidney
    • Bone marrow
    • Liver
    • Pancreas