Homeostasis and Body Systems Crossword Puzzle

QUESTIONS LIST:

• homeostasis : body’s process of keeping internal conditions within a narrow, healthy range. h _ _ _ _ _ _ _ _ _ s
• feedback : control loop that detects change and triggers a response to correct it. f _ _ _ _ _ _ k
• heart : four-chambered pump that drives blood through the body. h _ _ _ t
• artery : blood vessel that carries blood away from the heart under high pressure. a _ _ _ _ y
• vein : blood vessel that returns blood to the heart, often against gravity. v _ _ n
• blood : fluid connective tissue transporting gases, nutrients, and wastes. b _ _ _ d
• lungs : pair of organs where oxygen enters and carbon dioxide leaves the bloodstream. l _ _ _ s
• alveoli : microscopic air sacs in the lungs where gas exchange occurs. a _ _ _ _ _ i
• diaphragm : parachute-shaped muscle whose contraction draws air into the lungs. d _ _ _ _ _ _ _ m
• trachea : rigid tube conducting air from larynx toward the lungs. t _ _ _ _ _ a
• oxygen : gas required for aerobic respiration and released into blood at the lungs. o _ _ _ _ n
• stomach : muscular digestive organ that churns food with acid and enzymes. s _ _ _ _ _ h
• enzyme : protein catalyst that speeds up chemical reactions in digestion. e _ _ _ _ e
• neuron : nerve cell that transmits electrical impulses through the nervous system. n _ _ _ _ n