Question

module: nervous
topic: structures / type: combination

what structure is highlighted?

a. small saphenous v.
b. von ebners glands
c. vallate papilla
d. cutaneous distribution of superficial fibular n.
e. taste bud

Explanation:

Identify the histological specimen

Using the Tongue Histology knowledge point, we recognize the tissue as a section of the tongue. The large, dome-shaped projection surrounded by a deep circular furrow (trench) is characteristic of a Vallate Papilla (circumvallate papilla).

Analyze the highlighted structures

Using the Vallate Papilla and Taste Buds knowledge points, we observe that the green-highlighted structures are located deep in the lamina propria beneath the trench of the papilla. These are serous salivary glands known as von Ebner's glands (or gustatory glands), which secrete a watery fluid into the cleft to flush out food particles and allow taste buds to register new tastes.

Evaluate the multiple-choice options

• A. Small saphenous v. — Incorrect; this is a vascular structure of the lower limb.
• B. von Ebner's glands — Correct; these are the serous glands highlighted in green at the base of the papilla.
• C. Vallate papilla — Incorrect; while the entire large structure is the vallate papilla, only the deep glands are highlighted in green.
• D. Cutaneous distribution of superficial fibular n. — Incorrect; this is a gross anatomical nerve pathway.
• E. Taste bud — Incorrect; taste buds are located in the lateral epithelial walls of the papilla, not deep in the connective tissue.

Answer:

• (A) Small saphenous v.
• (B) von Ebner's glands (Correct answer)
• (C) Vallate papilla
• (D) Cutaneous distribution of superficial fibular n.
• (E) Taste bud