Which of the following statements is incorrect? the esophagus produces digestive enzymes. the esophageal mucosa consists of nonkeratinized stratified squamous epithelium. at each end of the esophagus, the muscularis forms two sphincters the upper esophageal sphincter and the lower esophageal sphincter. the upper esophageal sphincter consists of skeletal muscle and the lower of smooth muscle. the esophagus secretes mucus and transports food to the stomach.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen