The ______ layer of the GI tract wall contains glands,blood vessels,and nerves,whereas the ________ layer is the outermost layer that protects the GI tract.

Question

Quizplus · Accepted Answer

The submucosa layer of the GI tract wall contains glands, blood vessels, and nerves, while the serosa layer is the outermost layer that protects the GI tract. Therefore, choice D is the correct answer. Choice A is incorrect because the mucosa layer is the innermost layer of the GI tract wall that lines the lumen of the tract. Choice B is incorrect because the serosa layer is the outermost layer of the GI tract wall, not the submucosa layer. Choice C is incorrect because although the submucosa layer does contain glands, blood vessels, and nerves, it is not the outermost layer that protects the GI tract, which is the function of the serosa layer.

The ______ Layer of the GI Tract Wall Contains Glands,blood