Question

superior
posterior
anterior
ureter
urinary bladder (opened)
pubic symphysis
a
f
g
right ureter
h
b
i
ampulla of ductus (vas) deferens
j
c
d
k
e
crus of penis covered by ischiocavernosus muscle
l
inferior
sagittal dissection

Explanation:

Identify the anatomical plane and sex

The image shows a sagittal dissection of a male pelvis, as indicated by structures such as the urinary bladder, ductus (vas) deferens, crus of penis, and erectile tissues. We will identify the labeled structures from A to L.

Analyze posterior and superior structures (A-E)

Using Pelvic Anatomy landmarks:

• A: Points to the ductus (vas) deferens crossing superior to the ureter.
• B: Points to the seminal vesicle (gland), located posterior to the bladder and lateral to the ampulla of the ductus deferens.
• C: Points to the ejaculatory duct, formed by the union of the vas deferens and seminal vesicle duct.
• D: Points to the prostate gland, situated inferior to the bladder.
• E: Points to the prostatic urethra, passing through the prostate.

Analyze anterior and erectile structures (F-J)

• F: Points to the corpus cavernosum, the paired erectile tissue forming the dorsum of the penis.
• G: Points to the spongy (penile) urethra, running through the corpus spongiosum.
• H: Points to the corpus spongiosum, the erectile tissue surrounding the urethra.
• I: Points to the corona of the glans penis.
• J: Points to the glans penis, the distal expansion of the corpus spongiosum.

Analyze inferior and perineal structures (K-L)

• K: Points to the bulb of the penis, the expanded proximal part of the corpus spongiosum.
• L: Points to the bulbospongiosus muscle, covering the bulb of the penis.

Answer:

Based on the sagittal dissection of the male pelvis, the labeled anatomical structures are identified as follows:

• A: Ductus (vas) deferens
• B: Seminal vesicle (gland)
• C: Ejaculatory duct
• D: Prostate gland
• E: Prostatic urethra
• F: Corpus cavernosum
• G: Spongy (penile) urethra
• H: Corpus spongiosum
• I: Corona of glans penis
• J: Glans penis
• K: Bulb of penis
• L: Bulbospongiosus muscle