Cells which produce testosterone

The ability of the collecting duct (CD) to reabsorb (conserve) water depends on the increased salinity of the renal cortex.

Which of the following structures of the female reproductive anatomy is homologous to the scrotum of males?  

In the Male reproductive system, sperm are produced in small tubes called the 14.__________________.  These initial sperm are not mature, they must travel through a variety of tubules in order to become mature and capable of fertilization.  Upon ejaculation, sperm travel from the testis through a long tube up into the abdominal cavity.  This muscular tube is called the 15.________________.  Sperm traveling in this way would first be joined with fluid from a pair of glands on either side of the bladder.  These glands, which importantly produce fructose, are called the 16.________________.  Next the fluid travels down to join together into the urethra.  In this they come together in a donut shaped gland surrounding the urethra called the 17.___________.  An important point to be made about sperm (and eggs for that matter) is that they contain half of the normal chromosomal count.  Now, sperm and egg are collectively called the 18._________(s).  Having half the normal chromosomal count you might say that these structures are 19._____________.  If you bring together an egg and a sperm, the resulting fertilized could then be implanted into the Uterus. 

The fuel which sperm use to power their movements  

In the OTPF, the client is:

Which of the following is an example of a push factor?

Urbanization is the

Which set of imaginary lines runs parallel to the equator?

Compare Traditional, Market, and Command economies; be sure to discuss pros and cons of each.