Intermediate Ischiocavernosus Muscle Quiz

Q1. Which attachment pattern best describes the ischiocavernosus muscle?

• Sacrum to the coccyx
• Ischial region to the crus of the penis or clitoris
• Pubic symphysis to the rectum
• Iliac crest to the femur

Q2. Which erectile body forms the crus covered by ischiocavernosus in the male?

• Glans penis only
• Bulb of the penis
• Corpus spongiosum
• Corpus cavernosum

Q3. How does contraction of ischiocavernosus help maintain erection?

• By increasing urinary flow through the urethra
• By compressing the crus and reducing venous outflow
• By constricting the ureters
• By relaxing the erectile tissue completely

Q4. Which branch of the pudendal nerve provides motor fibers to the ischiocavernosus?

• Inferior rectal nerve only
• Dorsal nerve of the penis or clitoris only
• Posterior femoral cutaneous nerve
• Deep branch of the perineal nerve

Q5. Which structure lies directly deep to the ischiocavernosus muscle?

• Crus of the penis or clitoris
• Perineal body
• Urinary bladder
• External anal sphincter

Q6. Which statement correctly compares ischiocavernosus with bulbospongiosus?

• Both muscles lie in the deep perineal pouch
• Ischiocavernosus covers the crus, while bulbospongiosus is associated with the bulb
• Both muscles cover only the anal canal
• Ischiocavernosus surrounds the urethra, while bulbospongiosus covers the crus

Q7. The crus of the penis or clitoris is attached primarily along which bony region?

• Ischiopubic ramus
• Ischial spine only
• Sacral promontory
• Iliac crest

Q8. Which effect results from compression of the crus by ischiocavernosus?

• Opening of the anal canal
• Increased pressure within the corpus cavernosum
• Contraction of the urinary bladder
• Decreased pressure within all erectile tissue

Q9. Which statement correctly describes female ischiocavernosus anatomy?

• It forms the external urethral sphincter
• It surrounds the uterine cervix
• It covers the crus of the clitoris
• It covers the ovary

Q10. Which functional category best describes the ischiocavernosus muscle?

• Primary lateral rotator of the hip
• Primary muscle of defecation
• Muscle acting on erectile tissue
• Primary muscle of bladder emptying