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Multiple Choice
A serous membrane, the tunica ______ around each testis, has a parietal and visceral layer. Which term correctly fills the blank?
A
media
B
vaginalis
C
fascia
D
albuginea
Verified step by step guidance
1
Step 1: Understand the anatomy of the testis and its surrounding structures. The testis is enclosed by several layers, including serous membranes that provide protection and reduce friction during movement.
Step 2: Recall the definition of a serous membrane. Serous membranes are thin layers of tissue that line certain internal cavities and organs, consisting of a parietal layer (lining the cavity) and a visceral layer (covering the organ).
Step 3: Identify the specific serous membrane associated with the testis. The tunica vaginalis is the serous membrane that surrounds each testis and consists of both parietal and visceral layers.
Step 4: Differentiate the tunica vaginalis from other layers of the testis. For example, the tunica albuginea is a fibrous capsule directly surrounding the testis, while the tunica vaginalis is external to it and serves as a serous membrane.
Step 5: Confirm the correct term to fill the blank based on the description provided. The term 'vaginalis' correctly completes the sentence, as it refers to the serous membrane around each testis.