Science Crossword

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Elastic, hollow, muscular organ that provides temporary storage for urine: Bladder
A blood vessel that carries blood back to the heart.: Vein
main organ of the respiratory system: Lung
A tube that carries urine from kidney to bladder: Ureter
a nerve cell: Neuron
an automatic movement in response to a stimulus : Reflex
A tube through which urine flows from the body: Urethra
strong, flexible tissue that covers the ends of the bones: Cartilage
the gap between two neurons : Synapse
proteins that help break down large molecules into smaller molecules: Enzyme
where two or more bones meet: Joint
outer membrane that surrounds the bone: Periosteum
a disease in which joints become irritated or inflamed: Arthritis
A blood vessel that carries blood away from the heart: Artery
the movement of air into and out of the lungs: Breathing
Each of the two upper chambers of the heart that receives blood that come to the heart: Atrium
Each of the two lower chambers of the heart that pumps blood out of the heart: Ventricle
the yellowish, liquid part of blood that transports blood cells: Plasma
Microscopic blood vessels that exchange nutrients and waste: Capillaries
a thin, watery liquid made of broken down food molecules and gastric juice: Chyme
A muscular tube that connects the mouth to the stomach.: Esophagus
bean-shaped organ that filters wastes from the blood: Kidney
A disease causing agent: Pathogen
resistance to specific pathogens: Immunity
an overly sensitive immune response to common antigens: Allergy