Talk:Book - Sex and internal secretions (1961) 8

I. Introduction 497

II. Cycles Spontaneously Interrcpted. 498

III. PiTUITARY-OVARIAN DORMANCY 499

A. The Ovary in Anestrum 500

B. The Hypophysis 500

C. Relationship of the Anestrum to the

Seasons 501

IV. Attainment of Maturity. Emergence OF Full Ovarian Function. . 502 V. Follicular Cycles. Growth and

Atresia 504

A. Correlation of Ovarian Secretion

with the Follicular Cycle 507

B. Cyclic Manifestations after Ovari ectomy or Hypophysectomy 509

C. Cyclic Manifestations in the Ab sence of Ovarian Follicles 509

D. Hypothalamus and Gonadotrophin

Secretion. General Considerations 510

VI. Follicle Maturation and Ovulation 513

A. Time of Ovulation 513

B. Ovarian Steroids and Ovulation. . . 514

1. Estrogens 514

2. Gestagens 517

C. Role of the Nervous System in Ovu lation " 520

1. The hypophyseal portal veins and

the chemotransmitter hypothesis ' 523

2. Central depressants and ovula tion 526

3. The central nervous system as a

timing mechanism for ovulation 520

D. Persistent Follicle 529

VII. The Luteal Phase 530

1. Luteotrophic substances 530

2. "Nonfunctional" corpora lutea. . 531 A. Pseudopregnancy 532

1. Duration of pseudopregnancy. .. . 533

2. Neural factors in pseudopreg nancy 534

B. Luteolytic Mechanisms 537

C. Effect of the Uterus on Luteal Func tion 538

VIII. Concluding Comments 540

IX. References 541