Godinho H P, Cardoso F M, Nogueira J C
Acta Anat (Basel). 1977;99(2):204-8. doi: 10.1159/000144852.
The testicular arteries of Didelphis azarae originate from the abdominal aorta either independently from each other or by way of a common trunk. Accessory testicular arteries may be found. At the spermatic cord they form a rete mirabile having 26.8 +/- 5.0 and 29.3 +/- 4.9 slender branches on the right and left sides, respectively. The arterial branches are intermingled with veins of similar caliber and number. Near the testis the branches of the rete reunite in a single vessel which then penetrates the parenchyma of the testis. Inside the testis the artery divides usually into two main branches that course toward the caudal pole. The rectal, scrotal and testicular temperatures were 32, 28.5 and 30.4 degrees C, respectively, appearing than an abdominotesticular gradient temperature exists in this animal. Whether this mechanism is thermoregulatory for the normal spermatogenesis cannot be inferred from the present work.
阿扎拉棉鼠的睾丸动脉要么彼此独立地起源于腹主动脉，要么通过一个共同的主干起源。可能会发现副睾丸动脉。在精索处，它们形成一个奇异网，右侧和左侧分别有26.8±5.0和29.3±4.9条细长分支。动脉分支与口径和数量相似的静脉相互交织。在睾丸附近，奇异网的分支重新汇合为一条单一血管，然后穿透睾丸实质。在睾丸内部，动脉通常分为两个主要分支，向尾极延伸。直肠、阴囊和睾丸的温度分别为32℃、28.5℃和30.4℃，表明该动物存在腹睾温度梯度。从目前的研究中无法推断出这种机制是否对正常精子发生具有体温调节作用。
