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2025 Human Body
| Question | Answer | Number |
|---|---|---|
| The process in which organ systems work to maintain a stable internal environment | homeostasis | 1 |
| A collection of organs whose primary function is to support and protect the body (includes bones, cartilage, ligaments, and tendons) | Skeletal System | 2 |
| Attaches muscle to bone | tendon | 3 |
| Connects bone to bone | ligaments | 4 |
| A soft tissue inside the bone that produces blood cells | Bone marrow | 5 |
| A collection of organs whose primary function is movement | Muscular System | 6 |
| Muscles that you CAN control | voluntary muscles | 7 |
| Muscles that are NOT under your conscious control | involuntary muscles | 8 |
| A collection of organs that transport blood to and from your body’s cells (includes the heart, arteries, and veins) | Cardiovascular System | 9 |
| Blood vessels that carry blood AWAY from the heart | arteries | 10 |
| A blood vessel that carries blood BACK to the heart. | veins | 11 |
| blood vessels that act like a bridge and pass blood BETWEEN arteries and veins | capillaries | 12 |
| The process that allows all living things to release the energy in glucose to make ATP, the molecule that powers all the work of cells. | cellular respiration | 13 |
| system responsible for taking in oxygen and releasing carbon dioxide (includes the trachea, lungs, diaphragm, and alveoli) | Respiratory System | 14 |
| A dome-shaped muscle below the lungs that is involved in the breathing process | diaphragm | 15 |
| the windpipe | trachea | 16 |
| tiny air sacs of lung tissue specialized for the movement of gases | alveoli | 17 |
| Breaks down food into smaller molecules to be absorbed and used for fuel. (includes esophagus, stomach, small intestine, and large intestine) | Digestive System | 18 |
| the physical breakdown of chunks of food into smaller pieces. (mainly in the mouth & stomach) | mechanical digestion | 19 |
| the chemical breakdown of large, complex food molecules into smaller, simpler nutrient molecules that can be absorbed by the blood. (begins in the mouth & stomach but occurs mainly in the small intestine) | chemical digestion | 20 |
| Removes wastes from the blood (includes the kidneys, ureters, urethra, and bladder) | Excretory (Urinary) System | 21 |
| Filters waste from the blood like urea, water, salt and proteins. | kidney | 22 |
| An extensive network of specialized cells that carries electrical information to and from all parts of the body. (includes the brain, nerves, and spinal cord) | Nervous System | 23 |
| system of glands which secrete hormones that regulate processes such as growth, reproduction, and nutrient use (metabolism) by body cells. | Endocrine System | 24 |
| Chemical messengers that are manufactured by the endocrine glands; travel through the bloodstream, and affect other tissues | hormones | 25 |
| The cells and tissues that recognize and attack foreign substances in the body. (includes lymph nodes, spleen, and bone marrow) | Immune System | 26 |
| disease-causing agents like bacteria, viruses, etc. | Pathogens | 27 |
| Specialized proteins that aid in destroying infectious agents; they mark a pathogen that needs to be destroyed | Antibodies | 28 |
| Blood cells that perform the function of destroying disease-causing microorganisms | white blood cells | 29 |
| A collection of organs that helps the body maintain a stable and healthy internal environment (includes skin, hair, & nails) | Integumentary System | 30 |
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