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Which of these is a function of blood?  

From the outside in, the correct order of the layers of the digestive tract is __________.    

The urinary system is the group of organs that consists of the kidneys and the urinary tract-the ureters, urinary bladder, and ………………………-and performs many functions critical to the maintenance of homeostasis.  

Which of these is a lymphoid organ that is active in young children, but decreases in size and importance in adulthood?  

What occurs when egg and sperm fuse? (The process of combining the male gamete, or sperm, with the female gamete, or ovum.)  

Which of the following pieces of the male reproductive system is responsible for the production of the alkaline fluid that will allow sperm to migrate through the acidic female reproductive system?    

The pancreatic islets produce __________.  

The adrenal glands consist of _________.      

The two hormones released by the thyroid gland are ……………………..  

The heart contains chambers called the ______.