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Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Spermatogonia in interphase <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Spermatogonia in interphase

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Primary spermatocytes in prophase <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Primary spermatocytes in prophase

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Primary spermatocytes  in metaphase <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Primary spermatocytes in metaphase

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Spermatids <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Spermatids

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Sertoli cells <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Sertoli cells

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Tunica propria <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Tunica propria

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Leydig cells <p>Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x</p>

Leydig cells

Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x