Advanced Glans Penis Quiz

Q1. What is the developmental origin of the glans relative to the erectile bodies?

• It is the distal expansion of the corpus spongiosum
• It is an extension of the ductus deferens
• It is formed by fusion of the corpora cavernosa only
• It develops from the prostate

Q2. Why does the external urethral orifice represent a relatively narrow part of the male urethra?

• It lies within the pelvic diaphragm
• It is compressed by the prostate
• It contains a skeletal sphincter
• It forms a naturally narrow terminal urethral opening

Q3. What is the anatomical relationship between the fossa navicularis and external urethral orifice?

• The fossa lies within the urinary bladder
• The fossa is distal to the urethral opening
• The fossa is part of the ductus deferens
• The fossa is a dilation proximal to the external urethral orifice

Q4. Why can pathology of the glans spread to different nodes than pathology limited to penile shaft skin?

• Their predominant lymphatic drainage pathways differ
• The glans contains no lymphatics
• All penile tissues drain exclusively to lumbar nodes
• The shaft skin drains directly to the thoracic duct

Q5. Which nerve pathway is most important for fine somatic sensation from the glans?

• Vagus nerve directly to the brainstem
• Phrenic nerve to cervical spinal segments
• Femoral nerve to lumbar spinal segments only
• Dorsal nerve of the penis through the pudendal nerve

Q6. Why can the glans become engorged during erection despite being part of the corpus spongiosum?

• Its cartilage expands under autonomic stimulation
• Its skeletal muscle fibers hypertrophy immediately
• Its lymphatic vessels fill with urine
• Its erectile vascular spaces fill with blood while remaining less rigid than the corpora cavernosa

Q7. What functional advantage results from the corpus spongiosum and glans remaining less rigid than the corpora cavernosa?

• It closes the external urethral orifice completely
• It prevents arterial blood from entering the penis
• It helps maintain patency of the spongy urethra
• It stops contraction of the ductus deferens

Q8. Why is the corona an important surface landmark of the glans?

• It marks the prominent rim separating the glans from its neck
• It separates the testis from the epididymis
• It identifies the opening of the ejaculatory duct
• It marks the junction of the ureter and bladder

Q9. Which vascular concept best explains the color and engorgement changes of the glans during erection?

• Changes in bile flow
• Contraction of bone marrow
• Changes in blood flow through erectile vascular spaces
• Accumulation of cerebrospinal fluid

Q10. Which statement best integrates the anatomy of the glans penis?

• A superficial inguinal lymph node
• A paired cavernous body forming the penile root
• A sensitive distal expansion of the corpus spongiosum containing the terminal urethra and distinct lymphatic drainage
• A gland within the prostate that secretes semen