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- 1. Multiple ChoiceIn addition to water, the principal components of urine areamino acids and fatty acidsurea and saltsammonia and bilehydrochloric acid and bases
- 2. Multiple ChoiceWhich structure is correctly paired with its function?urethra–eliminates urine from the bladderneuron–filters the bloodventricle–pumps blood directly into atrialiver–produces intestinal amylase
- 3. Multiple ChoiceAfter reabsorption in nephrons is completed, the fluid that is left in the tubules is transported to theBowman's capsulecirculatory systemurinary bladderbile duct
- 4. Multiple Choice
The diagram represents a nephron. Which process takes place in region A?Proteins are converted to urea.Substances are filtered out of the glomerulus.Urine is stored temporarily.Water is reabsorbed into the blood. - 5. Multiple ChoiceWhat is a major function of the blood vessel represented in the diagram?releasing carbon dioxide into the sweat glandtransporting oxygen away from the sweat glandtransporting wastes to the sweat glandfiltering starch out of the sweat gland
- 6. Multiple ChoiceThe excretory system is responsible for moving toxic wastes, dissolved molecules, and excess heat. You would conclude that the excretory system contributes tocirculating molecules around the bodymaintaining dynamic equilibrium in the bodyproducing egg and sperm cells in the bodygas exchange
- 7. Multiple ChoiceWhich sequence represents the correct pathway for the removal of urine from the human body?kidney → ureter → urinary bladder → urethrakidney → urethra → urinary bladder → ureterureter → kidney → urinary bladder → urethraurethra → kidney → urinary bladder → ureter
- 8. Multiple ChoiceIn humans, the organ that most directly regulates the concentration of water in the blood is theheartliverpancreaskidney
- 9. Multiple ChoiceIn humans, the ureter transports urine from theblood to the kidneyliver to the kidneykidney to the urinary bladderurinary bladder to outside the body
- 10. Multiple ChoiceAs urine is excreted, muscle contractions of the urinary bladder will cause the urine to pass into theureterglomerulusurethraBowman's capsule
- 11. Multiple ChoiceWhat is the principal function of the excretory structure indicated by letter X in the diagram?reabsorptionfiltrationstorageegestion
- 12. Multiple ChoiceThe nephron is the structural unit of the humanlungliverkidneyintestine
- 13. Multiple ChoiceWhat is the main function of a nephron?It breaks down red blood cells to form nitrogenous wastes.It regulates the chemical composition of the blood.It forms urea from the waste products of protein metabolism.It absorbs digested food from the contents of the small intestine.
- 14. Multiple ChoiceIn humans, which substances are normally filtered out of the blood by the nephrons and then excreted?water, carbon dioxide, and glucoseurea, water, and mineral saltswater, glycogen, and ureaglucose, water, and red blood cells
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