The process of clipping wool from the dock, udder, and vulva of sheep before lambing is called:

Crowning is BEST defined as:

A) the natural loss of the embryo or fetus before the 28th week of pregnancy. B) a birth in which the buttocks or both feet deliver first. C) a spontaneous miscarriage or induced loss of the embryo or fetus. D) the bulging out of the vagina and exposure of the baby's head.

Which of the following is a chronic autoimmune disorder that causes muscle weakness?

A. Rheumatoid arthritis B. Congenital myopathies C. Duchenne's muscular dystrophy D. Myasthenia gravis