Gallbladder a Secretes carbonic acid bile glucagon bicarbonate b Filters blood and urine Heart a Composed of cardiac muscle intercalated discs i Coordinates contractions within the heart Secondary bronchi Breathing cycle a Breath in O2 b Breath out CO2 carbon dioxide Respiratory Path a Trachea b Primary bronchi c d Tertiary bronchi e Bronchioles f Respiratory bronchioles g Alveolar ducts h Alveolar sac i Alveoli Nasopharynx a Upper pharynx aids in effective air passage Oropharnyx a Middle portion of pharynx passageway for air food drink Laryngopharnyx a Bottom pharynx beginning of esophagus Pineal Gland a Secretes melatonin for circadian rhythm b Pituitary Gland a Secretes growth hormone b Thyroid Gland a Secretes T3 and T4 b Located in neck Kidney a Composed of nephrons Located in brain Located in brain i Collecting duct collects urine ii Adrenal gland above kidney I II III IV V VI VII VIII IX X XI XII 1 Secretes stress hormone corticosteroids catecholamine Eye a b Lens focuses lights on retina Lacrimal Gland secretes tears
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