158-167

Hands wrapped around the throat is a common sign of ___________.

choking

The churning movements of the stomach mix food with gastric juice. At this point, the food is a semisolid mixture called ________.

chyme

The _____________ is the flap of tissue that prevents food from entering the windpipe.

epiglottis

The _______________ is a long tube in the digestive tract that connects the back of the mouth with the top of the stomach.

esophagus

The ________________ is a first aid technique that can help clear the blocked airway of a choking person.

heimlich maneuver

The stomach produces ____________ , which is important for the digestion of protein.

hydrochloric acid

Bile is produced in the ___________.

liver

A slippery substance that protects the stomach wall is ___________.

mucus

Swallowing food stimulates ___________ , waves of muscular activity that help propel food through the digestive tract.

peristalsis

The ___________________ controls the rate at which the semisolid food mixture leaves the stomach and enters the small intestine.

pyloric sphincter