Body Systems Quiz
Questions: 16 · 10 minutes
1. Which organ is the main site where digested nutrients are absorbed into the bloodstream?
Stomach
Esophagus
Large intestine
Small intestine
2. You touch a hot pan and pull your hand away before consciously deciding to move it. Which system coordinates this rapid reflex?
Nervous system
Muscular system
Endocrine system
Lymphatic system
3. When you bend your elbow to lift a cup, which tissue provides the pulling force that moves the forearm bones?
Bone marrow
Articular cartilage
Skeletal muscle
Adipose tissue
4. Besides supporting and protecting the body, which important function is performed by bone marrow within the skeletal system?
Producing digestive enzymes
Producing blood cells
Filtering nitrogenous waste from blood
Releasing air from the lungs
5. During a run, which system transports oxygen from the lungs to working leg muscles?
Digestive system
Cardiovascular system
Integumentary system
Reproductive system
6. In which structures does most gas exchange between inhaled air and the blood occur?
Alveoli
Bronchi
Pleural membranes
Diaphragm
7. A scrape damages the body's first physical barrier against many pathogens. Which system includes that barrier?
Skeletal system
Respiratory system
Endocrine system
Integumentary system
8. Which statement best distinguishes endocrine signaling from most nervous-system signaling?
Endocrine signals travel only through ducts
Endocrine signals act only on nearby cells
Endocrine glands release hormones that can travel through the blood
Endocrine signals are electrical impulses carried by neurons
9. Which organ temporarily stores urine before it leaves the body?
Ureter
Kidney
Urinary bladder
Urethra
10. After an infection, lymph nodes may become enlarged while immune cells respond. To which system do lymph nodes belong?
Urinary system
Muscular system
Digestive system
Lymphatic system
11. After a meal, which organ releases insulin to help regulate blood glucose?
Pancreas
Spleen
Gallbladder
Appendix
12. Which two systems work together most directly to regulate blood pH by removing carbon dioxide and controlling hydrogen ions and bicarbonate?
Respiratory and urinary systems
Digestive and reproductive systems
Skeletal and integumentary systems
Muscular and lymphatic systems
13. A vaccine prepares the body to respond more effectively if it later encounters a particular pathogen. Which system develops this specific memory?
Cardiovascular system
Endocrine system
Immune system
Integumentary system
14. A swallowed bite of food moves toward the stomach even when a person is lying down. What process mainly causes this movement?
Diffusion through the esophageal wall
Peristaltic contractions of the esophagus
Filtration by smooth muscle
Gravity acting inside the trachea
15. Blood contains excess water and dissolved waste. Which organs primarily filter the blood and produce urine?
Liver and gallbladder
Lungs
Pancreas
Kidneys
16. Which pair of organs produces sex cells as part of the reproductive system?
Kidneys and bladder
Ovaries and testes
Spleen and thymus
Thyroid and adrenal glands