Practice questions for test #3


Urea is formed in the    A) liver.     B) stomach.     C) kidneys.     D) small intestine.    

E) large intestine.  


For humans there are ________ essential amino acids.   

 A) 2     B)  6      C)  4       D)  10       E)  20            


The synthesis of new organic molecules is

A) ketonuria      B) bulimia      C) ketonemia      D) anabolism      E) catabolism       


The breakdown of organic substrates is

A) ketonuria      B) bulimia      C) ketonemia      D) anabolism      E) catabolism  


The layer of loose connective tissue beneath the digestive epithelium is the   

A) lamina propria.

B) muscularis mucosae.   C) submucosa.    D) submucosal plexus.    E) myenteric plexus.  


A modification of the digestive epithelium that allows expansion of the organ is the presence of

A) flat surfaces.   B) mucous glands.    C) ciliated columnar cells.    D)  rugae.

E) large amounts of skeletal muscle.  


Regional movements that occur in the small intestine and function to break up, churn, and fragment the digestive materials are called   A) segmentation.    B) pendular movements.   

C) peristalsis.   

D) mass movements.    E) mastication.  


Powerful peristaltic contractions that occur a few times each day in the colon are called

A) segmentation.   B) pendular movements.    C) haustral churning.   

D) defecation.    E) mass movements.



A) protects the surface of the lungs.   B) phagocytizes small particulates.

C) replaces mucus in the alveoli.     D) helps prevent the alveoli from collapsing.

E) is not found in healthy lung tissue.                                                                                                                                       


The portion of the pharynx that receives both air and food is the

A) nasopharynx.  B) oropharynx.   C) laryngopharynx.   D) vestibule.   E) internal pharynx.                 


The glottis is    

A) the inferior margin of the soft palate.    B) a flap of elastic cartilage.

C) the opening to the larynx.    D) the opening to the pharynx.    E) part of the hard palate.                                    


The vocal folds are located in the

A) nasopharynx.   B) oropharynx.   C) larynx.   D) trachea.   E) bronchi.