Anatomy of Pelvis Rapid revision | Dr Krishna Sahith
Updated: November 13, 2025
Summary
This video delves into the intricate anatomical details of the male and female pelvis, including the formation of the sacral plexus and the course of the pudendal nerve. It examines the pelvic floor structure, the perineum anatomy, and highlights the differences in perineal structures between males and females. The video also explains the anatomy of the uterus, detailing its ligaments like the round ligament, ovarian ligament, and cardinal ligament, in addition to discussing the arterial blood supply to the ovaries and the layers of the ovaries. It provides insights on the pelvic floor muscles, the capacity of the urinary bladder, and the anatomy of the anal canal, including key structures like the pectinate line and drainage pathways.
TABLE OF CONTENTS
Male vs Female Pelvis Anatomy
Sacral Plexus
Pudendal Nerve
Pelvic Floor
Perineum Anatomy
Anatomy of Male Perineum
Anatomy of Female Perineum
Uterus Anatomy
Broad Ligament
Round Ligament of Uterus
Cardinal Ligament
Ovarian Ligament
Blood Supply to Ovaries
Ovarian Structure
Urine Extravasation
Facial Condensations
Pelvic Muscles
Urinary Bladder Capacity
Rectal Pouch and Ligaments
Retropubic Space
Urinary Bladder Anatomy
Urinary Bladder Ligaments
Internal Structures of the Urinary Bladder
Blood Supply and Nerve Innervation
Anatomy of Anal Canal
Anatomy of Anal Canal
Male vs Female Pelvis Anatomy
Discussing the differences between the male and female pelvis, including bone size, shape, and structure.
Sacral Plexus
Explaining the formation of the sacral plexus from spinal segments L4 to S4 and the nerves originating from it.
Pudendal Nerve
Detailing the course of the pudendal nerve and its branches, including the inferior rectal nerve and its functions.
Pelvic Floor
Describing the pelvic floor structure and its important functions like supporting abdominal organs and providing resistance to incontinence.
Perineum Anatomy
Illustrating the anatomy of the perineum, including its borders, structures, and important components like the pubococcygeus muscle.
Anatomy of Male Perineum
Discusses the anatomy of the male perineum, including structures like the deep perineal pouch, important muscles like bulbospongiosus, external anal sphincter, and levator ani muscle, and details on the urogenital diaphragm.
Anatomy of Female Perineum
Explains the anatomy of the female perineum, focusing on structures like the superficial perineal pouch, important muscles like bulbospongiosus, ischiocavernosus, and external anal sphincter, and discussions on important fascia like the perineal fascia.
Uterus Anatomy
Details the anatomy of the uterus, including explanations on the cervix, fundus, body, and important layers like perimetrium, myometrium, and endometrium. Also covers the ligaments surrounding the uterus and discusses positions like anteverted, retroverted, and retroflexed uterus.
Broad Ligament
The broad ligament consists of the mesosalpinx, mesometrium, and mesovarium, connecting them together.
Round Ligament of Uterus
The round ligament of the uterus attaches the uterus to the abdominal wall.
Cardinal Ligament
The Cardinal ligament of the uterus contains an artery and a vein, crucial for surgeries involving the uterus.
Ovarian Ligament
The ovarian ligament connects the uterus to the ovary, surrounded by the suspensory ligament of the ovary.
Blood Supply to Ovaries
The arterial blood supply to the ovaries includes the ovarian artery, a direct branch of the abdominal aorta.
Ovarian Structure
The ovaries consist of layers including the ovarian follicles and dense connective tissue enclosing vessels and nerves.
Urine Extravasation
Injury to different parts of the urethra can lead to urine extravasation, affecting surrounding spaces like the deep and superficial perineal pouches.
Facial Condensations
Facial condensations are structures supporting the pelvic floor, including the transverse cervical, transverse cervical of Macenrod, pubocervical ligaments, and the uterosacral ligament.
Pelvic Muscles
The pelvic floor muscles, including the deep transverse perineal muscle, levator ani muscle, and the coccygeus muscle, provide support to pelvic organs.
Urinary Bladder Capacity
The urinary bladder can hold around 220ml of urine, and a volume exceeding this causes the urge to urinate.
Rectal Pouch and Ligaments
Explanation of the recto pouch, pubo-prostatic ligament, diaphragm, and median umbilical ligament anatomy.
Retropubic Space
Description of the location and anatomy of the retro pubic space of redus.
Urinary Bladder Anatomy
Detailing the anatomy of the urinary bladder including the lateral weaves, uracus, and urinary bladder surfaces.
Urinary Bladder Ligaments
Overview of the ligaments connecting the pubic bone to the urinary bladder and the lateral ligaments.
Internal Structures of the Urinary Bladder
Discussion on the layers of the urinary bladder and its internal structures such as the trigone and muscular layers.
Blood Supply and Nerve Innervation
Explanation of the blood supply through superior and inferior vesicle arteries and the role of sympathetic and parasympathetic nerves in bladder regulation.
Anatomy of Anal Canal
Overview of the anatomy of the anal canal, including anterior relations, structures, and parts of the anal canal.
Anatomy of Anal Canal
Discusses the pectinate line, blood supply, lymphatics, nerves, and venous drainage of the anal canal.
FAQ
Q: What is the structure of the pelvic floor and what are its main functions?
A: The pelvic floor is a group of muscles that provide support to the abdominal organs and help in resisting incontinence.
Q: Explain the anatomy of the perineum and its components.
A: The perineum includes structures like the pubococcygeus muscle and borders, and plays a crucial role in supporting pelvic organs.
Q: What are the differences in the male and female perineum anatomy and structures?
A: The male perineum contains structures like the bulbospongiosus muscle, deep perineal pouch, external anal sphincter, and levator ani muscle. The female perineum includes the superficial perineal pouch, bulbospongiosus muscle, ischiocavernosus muscle, external anal sphincter, and perineal fascia.
Q: Detail the anatomy of the uterus, including its layers and ligaments.
A: The uterus has layers like perimetrium, myometrium, and endometrium. It is surrounded by ligaments such as the round ligament, cardinal ligament, and ovarian ligament.
Q: What is the arterial blood supply to the ovaries?
A: The ovarian artery, a direct branch of the abdominal aorta, supplies blood to the ovaries.
Q: Explain the function of the ligaments surrounding the uterus and their importance in surgeries.
A: The ligaments like the cardinal ligament contain arteries and veins crucial for surgeries involving the uterus. They provide structural support and stability to the uterus.
Q: Describe the anatomy of the urinary bladder, including its blood supply and internal structures.
A: The urinary bladder consists of muscular layers, the trigone, and receives blood supply from the superior and inferior vesicle arteries. Sympathetic and parasympathetic nerves regulate bladder function.
Q: Discuss the anatomy of the anal canal, including its relations and blood supply.
A: The anal canal has anterior relations, the pectinate line, and receives blood supply from specific arteries. It plays a role in stool continence.
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