Tunica Externa
Tunica Externa - Related Videos
03:55
Urethroplasty with Pedicled Tunica Vaginalis for the Treatment of Long-segment Anterior Urethral Stricture Caused by Lichen Sclerosus of Glans Penis
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Cited by 1 •
2024
This article introduces a surgical method using a pedicled tunica vaginalis to treat long-segment urethral stricture resulting from lichen sclerosus. The tunica vaginalis is an excellent substitute for the urethra, leading to quick postoperative recovery for patients.
09:44
Functional Assessment of Intestinal Motility and Gut Wall Inflammation in Rodents: Analyses in a Standardized Model of Intestinal Manipulation
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Cited by 32 •
2012
Postoperative ileus (POI) is a complication of abdominal surgery leading to increased morbidity and a prolonged hospital stay. Because prophylactic or therapeutic strategies are lacking intensified research is necessary. Therefore we established a standardized and feasible mouse model to investigate the pathophysiology of POI and to study potential therapeutic options.
05:40
A Mouse Aortic Interposition Model to Study Alloimmune-Induced Vascular Rejection
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2025
This video demonstrates a method for generating a mouse aortic interposition model to study alloimmune-induced vascular rejection. After placing an anesthetized donor mouse in the supine position, the infrarenal abdominal aorta (IAA) is carefully isolated from surrounding structures. Branching vessels are ligated, and both ends of the IAA are clamped to prevent blood flow before resection. Subsequently, the donor IAA is implanted into an allogeneic recipient mouse, and blood flow is restored...
07:05
Mouse Model of Alloimmune-induced Vascular Rejection and Transplant Arteriosclerosis
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Cited by 7 •
2015
We describe a protocol for aortic interposition grafting in mice. The goal of the protocol is to provide a model with which to study pathological processes and therapeutic strategies relevant to alloimmune reactions in arteries and the resultant arterial changes that contribute to organ transplant failure.
04:07
Performing Cavernous Nerve Stimulation in Rats to Measure Intracavernous Pressure
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2025
This video demonstrates the isolation and stimulation of the cavernous nerve in an anesthetized rat to study blood pressure changes in the cavernous body.
FAQs
These fibers provide complementary mechanical properties. Collagen contributes resistance to excessive stretching, whereas elastic fibers permit limited movement as pressure changes. Together, they help the vessel wall accommodate changing mechanical demands without losing overall support. This interaction is especially relevant when explaining how blood vessels preserve their form during circulation.
The outer layer does more than reinforce the vessel itself: it helps anchor the vessel to surrounding tissues. That attachment gives the vessel positional support while still allowing limited movement as blood pressure changes. In vascular anatomy, this relationship helps explain how vessels remain integrated with adjacent organs rather than functioning as isolated tubes.
In larger vessels, the tunica externa may include small blood vessels and nerves that supply the vessel wall. Their presence shows that the wall can require its own vascular and neural support as vessel size increases. Recognizing these components is important when interpreting the organization of larger vessels in anatomical or biological studies.
Both arteries and veins depend on the tunica externa as part of the organization that helps them maintain shape and tolerate mechanical stress. The available description emphasizes a shared structural function rather than assigning completely different roles to each vessel type. Comparing the layer in both vessels therefore helps connect vascular wall structure with circulation broadly.
An assessment should focus on the layer’s outer position, connective-tissue composition, and relationship to surrounding tissues. In larger vessels, the examination can also note whether small blood vessels and nerves are present within it. Recording these features links structural organization to the vessel’s support, anchoring, and ability to accommodate pressure-related movement.
Its organization provides a structural framework for investigating how vessels respond to mechanical stress and interact with nearby tissues. Research can consider connective-tissue support, anchoring, and the presence of wall-supplying vessels and nerves in larger vessels. These features connect vascular anatomy with studies of vessel injury and disease without treating the wall as a single uniform structure.