Image Description: Illustration of bronchioles, the tiny airways that carry oxygen to the alveoli in the lungs. They are part of the conduction zone of the respiratory system. There are three types of bronchioles: lobular, terminal and respiratory. Bronchioles are lined with muscular walls and are about 0.5 to 1mm in diameter. They control the amount of air distributed in the lungs by constricting and dilating. Bronchioles, which lack any supporting cartilage, are particularly affected by conditions that cause constriction or obstruction of the airways. Conditions affecting the bronchioles include bronchiolitis and asthma. Image File Sizes: Size Pixels Inches cm Small 600x554px 2.0x1.8” @300dpi8.3x7.6" @72dpi 5.1x4.7cm @300dpi21.2x19.5cm @72dpi Medium 1200x1107px 4.0x3.7” @300dpi16.7x15.3" @72dpi 10.2x9.4cm @300dpi43.3x39.0cm @72dpi Large 2400x2213px 8.0x7.4” @300dpi33.3x30.7" @72dpi 20.3x18.7cm @300dpi84.7x78.0cm @72dpi X-Large 3479x3208px 11.6x10.7” @300dpi48.3x44.5" @72dpi 29.5x27.2cm @300dpi122.7x113.1cm @72dpi Anatomy Visible in the Medical Illustration Includes: Bronchioles, alveoli, capillaries, alveolar duct, alveolar sac, terminal bronchioles, respiratory bronchioles, lobular bronchiole, lungs Image created by: Joanna Culley