Fill in the Blanks Human systemOnline version Organ functions by Sheyris Rodríguez 1 urethra trachea bronchioles Intestine bronchioles bronchi bronchioles ureters Intestine rectum kidneys urinary Nose bladder : The most external organ , air is inhaled and exhaled through nose , has different mechanisms for cleaning and condensing the inhaled air . The are a pair of tubes that carry urine from the kidneys to the urinary bladder . Small : Lies between stomach and large intestine , majority of digestion and absorption takes place here , About 5 meters in length . Larynx : Also known as sound box , formed of cartilages , connects the trachea to the laryngopharynx . Trachea : Tubular structure with about 1 inch of diameter , composed of 15 - 20 C shaped cartilages that keep it dilated . The connects the larynx to the bronchi and allows air to pass through the neck and into the thorax . The filter metabolic wastes , excess ions , and chemicals from the blood to form urine . Alveoli : tiny organs that help our body parts get the oxygen that we breathe in and get rid of the carbon dioxide we don't need . Rectum : The is an 8 - inch chamber that connects the colon to the anus . It is the rectum's job to receive stool from the colon , to let the person know that there is some stool to be evacuated , and to hold the stool until evacuation happens . The is a sac - like hollow organ used for the storage of urine . Lungs : Main organs of respiration , two in number ( one on each side of heart ) Conical in shape , divided into lobes . They are the organs of human body where gaseous exchange take place . Stomach : Muscular , hollow and dilated part of alimentary canal , involved in both mechanical and chemical digestion of food , secretes strong acid and enzymes to aid in digestion of food . Liver : Produces bile for emulsification of fats . Pancreas : Secretes pancreatic juice containing different digestive enzymes into the small intestine . Esophagus : Muscular tube passing the food from pharynx to stomach . Large : Second - to - last part of alimentary canal , main function is to absorb water from indigestible food . Bronchi and : Left and Right divisions of trachea , enters the lungs and divide into secondary bronchi ( ) . The main function of the and is to carry air from the trachea into the lungs . The is the tube through which urine passes from the bladder to the exterior of the body . Anus : Last part of alimentary canal , opens to outside for ejection of food , Controls the expulsion of feces .
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