Pelvic Anatomy Overview

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Which sphincter is primarily responsible for resting anal pressure and fecal continence?

Urethral sphincter

External anal sphincter

Internal anal sphincter (correct)

Pelvic floor muscles

What type of muscle makes up the internal anal sphincter?

Smooth muscle (correct)

Cardiac muscle

Striated muscle

Skeletal muscle

Which nerve innervates the external anal sphincter?

Sciatic nerve

Pudendal nerve (correct)

Femoral nerve

Obturator nerve

What structure surrounds the ovarian nerves and vessels, holding the ovaries in place?

Suspensory ligament of ovary Signup and view all the answers

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Ampulla of the uterine tube Signup and view all the answers

Which of the following is a key function of the autonomic innervation of the pelvic organs?

Regulation of blood flow to the pelvic organs Signup and view all the answers

The visceral sensory innervation of the pelvic organs is primarily carried by which of the following nerves?

Pelvic splanchnic nerves Signup and view all the answers

The pelvic pain line, which separates the lower abdomen from the pelvis, is marked by the transition between which two types of sensory innervation?

Somatic and visceral Signup and view all the answers

Which of the following is a key characteristic of the female pelvic skeleton compared to the male?

Wider sciatic notch Signup and view all the answers

The rectum and anal canal are innervated by which of the following nerve plexuses?

Sacral plexus Signup and view all the answers

Which of the following is a key function of the female internal genital organs?

Hormone production Signup and view all the answers

Which of the following is responsible for maintaining the anorectal flexure at rest?

Puborectalis muscle Signup and view all the answers

What type of sensory innervation is present above the pectinate line in the anal canal?

Visceral afferents sensitive to stretch Signup and view all the answers

Where is the anorectal junction located?

At the level of the S3 vertebra Signup and view all the answers

What is the difference in embryological origin between the upper and lower parts of the anal canal?

The upper part is derived from endoderm, and the lower part is derived from ectoderm. Signup and view all the answers

Which structure is responsible for the sensation of pain, touch, and temperature in the lower part of the anal canal?

Somatic afferents Signup and view all the answers

Which of the following structures forms the pelvic inlet?

Sacrum, ilium, and pubis Signup and view all the answers

Which ligaments create the greater and lesser sciatic foramina?

Sacrotuberous and sacrospinous ligaments Signup and view all the answers

Which of the following statements regarding the male and female bony pelvis is correct?

The male pelvis is narrower and deeper than the female pelvis. Signup and view all the answers

Which of the following structures is NOT part of the pelvic outlet?

Sacroiliac joints Signup and view all the answers

Which of the following structures is part of the perineal region?

External genitalia and anus Signup and view all the answers

Which structure creates a one-way flap valve in the bladder wall?

Ureters Signup and view all the answers

Where is the anorectal junction located?

Rectum Signup and view all the answers

Which pelvic organ is common to both sexes?

Prostate Signup and view all the answers

Where is the external urethral orifice located in males?

Penile urethra Signup and view all the answers

What muscle primarily surrounds the urethra in males?

Prostate gland Signup and view all the answers

Which artery supplies the bladder by arising directly from the internal iliac artery?

Inferior vesical Signup and view all the answers

In the male pelvic arteries, what is the typical relationship of the superior gluteal artery?

Between LS trunk and S1 ventral ramus Signup and view all the answers

Which arteries form an anastomotic network to supply the female internal genitalia?

Ovarian and uterine arteries Signup and view all the answers

In pelvic viscera supplied by branches from the anterior division, which structure corresponds to the inferior vesical artery in males?

Vaginal Signup and view all the answers

What is the source of the umbilical artery in supplying the bladder?

Superior vesical Signup and view all the answers

What structure is responsible for the passive support of the uterus and vagina?

The cardinal ligament Signup and view all the answers

Which of the following structures is directly palpable during a digital rectal exam for prostate cancer screening?

The prostate gland Signup and view all the answers

Where is the deepest part of the vagina located, separated from the recto-uterine pouch by a thin layer of pelvic fascia and peritoneum?

The posterior vaginal fornix Signup and view all the answers

Which of the following arteries course within the cardinal ligament, along the base of the broad ligament?

The uterine and vaginal arteries Signup and view all the answers

Which of the following structures is responsible for the dynamic support of the uterus and vagina?

The pelvic diaphragm muscles Signup and view all the answers

In which part of the uterine tube does fertilization and most ectopic pregnancies typically occur?

The ampulla Signup and view all the answers

Which of the following is a characteristic feature of the normal position of the uterus?

Anteflexion and anteversion Signup and view all the answers

Which of the following procedures is used to aspirate and collect peritoneal fluid from the recto-uterine pouch (pouch of Douglas)?

Culdocentesis Signup and view all the answers

Which of the following structures surrounds the ovarian nerves and vessels, holding the ovaries in place?

The mesovarium Signup and view all the answers

Which of the following nerve plexuses innervates the rectum and anal canal?

The inferior rectal plexus Signup and view all the answers

What is the name of the shallow compartment that is inferior to the pelvic diaphragm and deep to the perineal region?

Perineal compartment Signup and view all the answers

Which ligaments create the greater and lesser sciatic foramina?

Sacrotuberous and sacrospinous ligaments Signup and view all the answers

What is the key difference in the bony pelvis between males and females?

Females have a wider pubic arch Signup and view all the answers

Which part of the anal canal is innervated by somatic sensory nerves, responsible for pain, touch, and temperature sensation?

Below the pectinate line Signup and view all the answers

Which structure is responsible for maintaining the anorectal flexure at rest?

Puborectalis muscle Signup and view all the answers

Which structure is responsible for maintaining the anorectal flexure at rest?

Puborectalis muscle Signup and view all the answers

Which of the following is a key function of the female internal genital organs?

Reproduction Signup and view all the answers

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Infundibulum of the uterine tube Signup and view all the answers

Which ligament surrounds the ovarian nerves and vessels, holding the ovaries in place?

Suspensory ligament of the ovary Signup and view all the answers

Which of the following structures forms the pelvic inlet?

Pelvic brim Signup and view all the answers

Which of the following is a key characteristic of the female pelvic skeleton compared to the male?

Wider pelvic inlet to facilitate childbirth Signup and view all the answers

What type of muscle makes up the internal anal sphincter?

Smooth muscle Signup and view all the answers

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Fallopian tube Signup and view all the answers

Which of the following structures surrounds the ovarian nerves and vessels, holding the ovaries in place?

Broad ligament Signup and view all the answers

Which of the following is a key function of the autonomic innervation of the pelvic organs?

Regulation of blood flow and secretion in the pelvic organs Signup and view all the answers

Pelvic Anatomy Overview

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Questions and Answers

Which sphincter is primarily responsible for resting anal pressure and fecal continence?

What type of muscle makes up the internal anal sphincter?

Which nerve innervates the external anal sphincter?

What structure surrounds the ovarian nerves and vessels, holding the ovaries in place?

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Which of the following is a key function of the autonomic innervation of the pelvic organs?

The visceral sensory innervation of the pelvic organs is primarily carried by which of the following nerves?

The pelvic pain line, which separates the lower abdomen from the pelvis, is marked by the transition between which two types of sensory innervation?

Which of the following is a key characteristic of the female pelvic skeleton compared to the male?

The rectum and anal canal are innervated by which of the following nerve plexuses?

Which of the following is a key function of the female internal genital organs?

Which of the following is responsible for maintaining the anorectal flexure at rest?

What type of sensory innervation is present above the pectinate line in the anal canal?

Where is the anorectal junction located?

What is the difference in embryological origin between the upper and lower parts of the anal canal?

Which structure is responsible for the sensation of pain, touch, and temperature in the lower part of the anal canal?

Which of the following structures forms the pelvic inlet?

Which ligaments create the greater and lesser sciatic foramina?

Which of the following statements regarding the male and female bony pelvis is correct?

Which of the following structures is NOT part of the pelvic outlet?

Which of the following structures is part of the perineal region?

Which structure creates a one-way flap valve in the bladder wall?

Where is the anorectal junction located?

Which pelvic organ is common to both sexes?

Where is the external urethral orifice located in males?

What muscle primarily surrounds the urethra in males?

Which artery supplies the bladder by arising directly from the internal iliac artery?

In the male pelvic arteries, what is the typical relationship of the superior gluteal artery?

Which arteries form an anastomotic network to supply the female internal genitalia?

In pelvic viscera supplied by branches from the anterior division, which structure corresponds to the inferior vesical artery in males?

What is the source of the umbilical artery in supplying the bladder?

What structure is responsible for the passive support of the uterus and vagina?

Which of the following structures is directly palpable during a digital rectal exam for prostate cancer screening?

Where is the deepest part of the vagina located, separated from the recto-uterine pouch by a thin layer of pelvic fascia and peritoneum?

Which of the following arteries course within the cardinal ligament, along the base of the broad ligament?

Which of the following structures is responsible for the dynamic support of the uterus and vagina?

In which part of the uterine tube does fertilization and most ectopic pregnancies typically occur?

Which of the following is a characteristic feature of the normal position of the uterus?

Which of the following procedures is used to aspirate and collect peritoneal fluid from the recto-uterine pouch (pouch of Douglas)?

Which of the following structures surrounds the ovarian nerves and vessels, holding the ovaries in place?

Which of the following nerve plexuses innervates the rectum and anal canal?

What is the name of the shallow compartment that is inferior to the pelvic diaphragm and deep to the perineal region?

Which ligaments create the greater and lesser sciatic foramina?

What is the key difference in the bony pelvis between males and females?

Which part of the anal canal is innervated by somatic sensory nerves, responsible for pain, touch, and temperature sensation?

Which structure is responsible for maintaining the anorectal flexure at rest?

Which structure is responsible for maintaining the anorectal flexure at rest?

Which of the following is a key function of the female internal genital organs?

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Which ligament surrounds the ovarian nerves and vessels, holding the ovaries in place?

Which of the following structures forms the pelvic inlet?

Which of the following is a key characteristic of the female pelvic skeleton compared to the male?

What type of muscle makes up the internal anal sphincter?

Where does fertilization and most ectopic pregnancies usually occur in the female reproductive system?

Which of the following structures surrounds the ovarian nerves and vessels, holding the ovaries in place?

Which of the following is a key function of the autonomic innervation of the pelvic organs?

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