The ‘filtering factories’ of the excretory system are called ___.a.rectum.b.alveoli.c.nephrons.d.bronchi.Please select the best answer from the choices providedABCDUrine analysis helps to detect which of the following?a.medical problemsb.presence of sugarc.presence of proteinsd.all of the abovePlease select the best answer from the choices providedABCDThe main function of the excretory system is to ____.a.protect the brainb.strengthen skeletal musclesc.bring carbon dioxide to body cellsd.collect and remove wastes from the bodyPlease select the best answer from the choices providedABCDWhich excretory organ eliminates water and some chemical wastes in perspiration?a.skinb.liverc.lungsd.kidneysPlease select the best answer from the choices providedABCDThe ureters carry the urine to the diaphragm, a muscular organ that stores urine.Please select the best answer from the choices providedTFA chemical found in urine that is produced from breaking down of proteins is called ___.a.ureab.glucosec.folic acidd.none of the abovePlease select the best answer from the choices providedABCDWhat is the function of kidneys?a.eliminate nitrous oxideb.supply excess water to the bodyc.remove urea and other wastesd.none of the abovePlease select the best answer from the choices providedABCDRemoving wastes from the body is called _____.a.exhalation.b.excretion.c.respiration.d.none of the above.Please select the best answer from the choices providedABCDIn the first stage of urine formation, needed materials and oxygenare removed from the blood.Please select the best answer from the choices providedTFUrine passes out of the body through a tube called the ureter.Please select the best answer from the choices providedTF

The endocrine system maintains homeostasis, or internal balance, through negative feedback.Please select the best answer from the choices providedTFWhich of the following works with the endocrine system and the nervous system?a.hypothalamusb.parathyroid glandsc.pituitary glandd.thyroid glandPlease select the best answer from the choices providedABCDWhich gland helps regulate growth, blood pressure and water balance?a.adrenal glandsb.pancreasc.pituitary glandd.thyroid glandPlease select the best answer from the choices providedABCWhich of the following is a function of hormones?a.turn off organ and tissue activities.b.turn on organ and tissue activities.c.speed up organ and tissue activities.d.all of the above.Please select the best answer from the choices providedABcHormones act on target tissues to regulate the body’s activities.Please select the best answer from the choices providedTFEndocrine glands release chemicals that are also known as ___.a.target cells.b.hypothalamus.c.lymph.d.hormones.Please select the best answer from the choices providedABCDWhat controls the pituitary glands?a.hypothalamusb.blood and salivac.sugarsd.target cellsPlease select the best answer from the choices providedABCDThe endocrine system controls the amount of a particular ____________________ in the blood by stopping its release when it reaches a certain level.a.enzymec.cellb.hormoned.metabolitePlease select the best answer from the choices providedABCD

The hormone ____________________ (estrogen/testosterone) controls the development of male characteristics.650-06-06-02-00_files/i0260000.jpgIdentify the structure in the diagram above where fertilization usually takes place.When does the male reproductive system start producing sperms?What structure is formed when fertilization occurs?What is sexual reproduction?When a human egg is not fertilized, extra blood and tissue from the uterus are released through the vagina in a process called _______________ (ovulation/menstruation).