Final answer:
Emission and ejaculation occur under sympathetic control, begin with peristaltic contractions of the ampulla, and involve contractions of the bulbospongiosus muscle, all contributing to the propulsion of semen into the female reproductive tract.
The correct answer is options E) All of the answers are correct.
Step-by-step explanation:
The answer to the student's question regarding the characteristics of emission and ejaculation is E) All of the answers are correct. The process is indeed regulated by sympathetic stimulation and begins with peristaltic contractions, specifically of the ampulla and the vas deferens.
This series of contractions propels the sperm along with seminal fluid into the female reproductive tract during ejaculation. Additionally, contractions of the bulbospongiosus muscle contribute to the expulsion of semen from the urethra.
During this process, semen, which is a mixture of sperm and fluids from various glands, is expelled in spurts due to the peristaltic action of the muscles. The coordination of these events is essential for the proper functioning of the male reproductive system and the successful delivery of sperm to the female reproductive tract.
The correct answer is options E) All of the answers are correct.