Human Respiratory System Crossword Puzzle

QUESTIONS LIST:

• exhalation : the action of breathing air out of the lungs.
• lungs : organs of the respiratory system where gas exchange happens.
• intercostal muscles : muscles between the ribs that aid breathing.
• bronchi : branches from the trachea leading into each lung.
• diaphragm : the sheet of muscle beneath the lungs that helps breathing.
• alveoli : tiny air sacs in the lungs where gas exchange occurs.
• mucus : sticky substance that traps dust in the respiratory tract.
• trachea : the main windpipe that carries air to the lungs.
• diffusion : the process by which gases move from high to low concentration.
• carbon dioxide : gas removed from the body during exhalation.
• ribs : protective bones around the lungs.
• gas exchange : exchange of oxygen and carbon dioxide between alveoli and blood.
• oxygen : gas we breathe in for respiration.
• cilia : small hairs in the trachea that trap dust and microbes.
• inhalation : the action of breathing air into the lungs.