The muscle responsible for flexing and rotating the head is the:

The mammary gland cells produce ________, which is ingested by the breastfed newborn during the first two to three days of life

A) lysozymes B) colonterum C) colostrum D) cholesterol

A pleural effusion that consists of air in the pleural cavity is also called a(n) _______________. 

Fill in the blank(s) with the appropriate word(s).