The lamina propria forms part of the:
a. Muscularis externa
b. Submucosa
c. Serosa
d. Mucosa

검증된 단계별 안내

Step 1: Understand the layers of the gastrointestinal (GI) tract wall. The main layers from inside to outside are: mucosa, submucosa, muscularis externa, and serosa (or adventitia).

Step 2: Recall that the mucosa itself is composed of three sublayers: the epithelium (innermost lining), the lamina propria (a layer of connective tissue), and the muscularis mucosae (a thin layer of smooth muscle).

Step 3: Identify the lamina propria as the connective tissue layer that supports the epithelium and contains blood vessels, lymphatics, and immune cells.

Step 4: Recognize that the lamina propria is part of the mucosa layer, not the submucosa, muscularis externa, or serosa.

Step 5: Conclude that the correct answer is the mucosa, since the lamina propria forms part of this innermost layer of the GI tract.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Lamina Propria

The lamina propria is a thin layer of loose connective tissue found beneath the epithelium of mucous membranes. It contains blood vessels, nerves, and immune cells, providing support and nourishment to the epithelium. It plays a key role in immune defense and tissue repair.

Mucosa Layer

The mucosa is the innermost layer of the gastrointestinal tract, consisting of the epithelium, lamina propria, and muscularis mucosae. It functions in absorption, secretion, and protection, forming the interface between the lumen and underlying tissues.

Layers of the Gastrointestinal Tract

The GI tract wall is organized into four main layers: mucosa, submucosa, muscularis externa, and serosa. Each layer has distinct structures and functions, with the lamina propria specifically located within the mucosa layer.

The lamina propria forms part of the:a. Muscularis externab. Submucosac. Serosad. Mucosa