Respiratory control centers are located in the__________.

The placental hormone human chorionic somatomammotropin (hCS)__________.

The layer of the eye which contains the photoreceptors (rods and cones) is called the__________.

Prostate gland secretion__________.

The cells of the retina in which action potentials are generated are the__________.

The eye muscle that depresses the eye and turns it medially is the__________.

Which of the following is NOT a characteristic of the large intestine?

The vocal cords and the medial opening between them through which air passes are collectively called the__________.

Urine passes through the___________.

B cells respond to the initial antigen by__________.