![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Testis proper: Endocrine portion
Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x
![Seminiferous tubules <p>Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-2B-1-ping.png)
Seminiferous tubules
Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x
![Leydig (interstitial) cells <p>Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-2B-2-ping.png)
Leydig (interstitial) cells
Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x
![Tunica propria <p>Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-2B-3-ping.png)
Tunica propria
Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x
![Blood vessels <p>Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-2B-4-ping.png)
Blood vessels
Leydig (interstitial) cells are located in the tissue between the convoluted portions of the seminiferous tubules and constitute the endocrine portion of the testis. They secrete testosterone under the influence of luteinizing hormone from the pars distalis of the pituitary gland. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 400x
![Image source > <p>Images take of a slide from the University of New England College of Osteopathic Medicine slide collection.</p>](https://digitalhistology.org/wp-content/uploads/2023/11/UNE-ping-plural-1.png)
Image source >
Images take of a slide from the University of New England College of Osteopathic Medicine slide collection.