The endocrine structure among the options provided is the Semin vesic.
Here's why:
1. The Seminal Vesicles, also known as Seminal Glands, are part of the male reproductive system.
2. These glands secrete a fluid that mixes with sperm to form semen.
3. The fluid produced by the seminal vesicles contains nutrients and substances that support sperm survival and fertility.
4. The seminal vesicles play a role in the endocrine system by secreting hormones that help regulate reproductive processes.
In conclusion, the Seminal Vesicles are the endocrine structure among the options given as they have a role in hormone secretion related to the male reproductive system.
