Across
- 3. A hormone produced by the pancreas that regulates blood sugar levels by facilitating the uptake of glucose into cells.
- 6. The junction between two nerve cells, where signals are transmitted through neurotransmitters.
- 7. A group of organs that work together to perform a particular function or set of functions.
- 11. A specialized cell transmitting nerve impulses; a nerve cell.
- 14. The muscle tissue found in the heart responsible for its contraction and pumping action.
- 18. Blood cells involved in the body's immune response, defending against infections and foreign substances.
- 21. A group of similar cells working together to perform a specific function.
- 23. The system responsible for producing offspring.
- 26. A structure composed of two or more tissues that perform a specific function.
- 27. The voluntary muscle tissue attached to bones, responsible for movement and locomotion.
- 28. The study of the functions and processes of living organisms.
- 29. The framework of bones and cartilage that supports and protects the body's organs and tissues.
- 30. The system responsible for the exchange of gases (oxygen and carbon dioxide) between the body and the environment.
Down
- 1. The study of the structure and organization of living organisms.
- 2. The system responsible for the breakdown and absorption of nutrients from food and the elimination of waste.
- 4. The system consisting of the skin, hair, nails, and glands, providing protection from external factors.
- 5. Chemical messengers produced by glands and circulated in the bloodstream to regulate bodily functions.
- 8. The system responsible for movement, posture, and heat production through muscle contractions.
- 9. The body's ability to maintain a stable internal environment despite external changes.
- 10. Blood cells containing hemoglobin, responsible for transporting oxygen to the body tissues.
- 12. Growth hormone (GH) A hormone that stimulates growth and cell reproduction.
- 13. The network of nerve cells and fibers that transmit nerve impulses between parts of the body.
- 15. An automatic response to a stimulus, often involving the spinal cord rather than the brain.
- 16. Tiny air sacs in the lungs where gas exchange occurs between the air and the blood.
- 17. The body's defense mechanism against pathogens, toxins, and foreign substances.
- 19. The system responsible for the transportation of nutrients, gases, hormones, and waste products throughout the body.
- 20. The "master gland" located at the base of the brain, responsible for regulating various other endocrine glands.
- 22. The involuntary muscle tissue found in the walls of internal organs, such as the digestive tract.
- 24. The system responsible for producing and secreting hormones that regulate various bodily functions.
- 25. The basic structural and functional unit of all living organisms.