Pelvic Vessels and Autonomics Flashcards
What artery provides blood supply to all of the Perineum?
Internal Pudendal Artery
Describe: “Water Under the Bridge”
Ureter runs underneath the Uterine Artery
What is important to consider during Hysterectomies?
To avoid the Ureters when clamping/cutting the Uterine Artery
What accessory branches from the Cavernous Artery fills the Corpora Cavernosa with blood?
Helicine arteries
What nerve provides sensory, motor, and cutaneous innervation to the entire Perineum?
Pudendal Nerve
What nerve is responsible for the release of body fluids (urination, defecation, ejaculation, etc.)?
Pudendal Nerve
What nerve is responsible for innervating External Sphincters?
Pudendal Nerve
What are the branches of the Pudendal Nerve?
- Inferior Rectal
- Common Perineal
- Superficial Perineal
- Deep Perineal
- Posterior Scrotal/Labial
- Dorsal Nerve to Penis/Clitoris
What nerve transmit pain signals from external hemorrhoids?
Pudendal Nerve
What is the primary function of Sacral Sympathetic Trunks?
Provide postsynaptic fibers to Sacral Plexus for sympathetic innervation of the lower limb
What is the primary function of the Periarterial Plexuses (Ovarian, Sup. Rectal, Int. Iliac)?
The Periarterial Plexus provides vasomotion (constriction) of the arteries they accompany
What role do the Lumbar Splanchnic nerves play in defecation?
Provide sympathetic innervation to inhibit peristalsis of the Rectum (prevents defecation)
What role do the Pelvic Splanchnic nerves play in defecation?
Provide parasympathetic innervation to stimulate peristalsis of the Rectum (initiates defection)
