Urea is primarily concentrated in the_________________$

The saclike organ that stores urine is the _________________

The process of filtration takes place in a structure called the _________________

The functional units of the kidney are called _________________

The primary organ of excretion is the _________________

The lining of the small intestine is covered with fingerlike projections called _________________

The mixture of partly digested food that leaves the stomach is called _________________

The organ that produces bile is the _________________

The tube that connects the throat with the stomach is the _________________

Organic molecules that help regulate body processes are called _________________

The contractions that push food through the esophagus into the stomach are called _________________

Saliva contains the enzyme $___________$ that breaks the chemical bonds in starches.

$________________________________$ are needed for growth and repair of structures such as skin and muscle.

Nutrients that are formed from fatty acids and glycerol are ________________________________