The human male reproductive system
Human male reproductive system and ad...
Penis, testis, urethra, prostate, bla...
Transverse section through the left s...
Testicle of a cat: 1 Extremitas capit...
1 Epididymis 2 Head of epididymis 3 L...
1 Head or upper pole of testis - 2...
The right testis, exposed by laying o...
microscopic picture of seminiferous t...
1: Testicular septa - 2: Convoluted...
The deeper branches of the internal p...
Schematic drawing of testicle and epi...
Vertical section of the testis, to sh...
The spermatic cord in the inguinal ca...
Fundus of the bladder with the vesicu...
Vertical section of bladder, penis, a...
Prostate with seminal vesicles and se...
Cross-section of vas deferens through...
Testis
Cross-section of seminiferous tubules...
Prostate
Lobes of prostate
Zones of prostate
Prostate histology
Testosterone
Dehydroepiandrosterone
Androstenedione
Androsterone
Dihydrotestosterone
Dihydrotestosterone 3D
A sperm cell attempts to penetrate an...
Diagram of a human spermatozoon
Cross section of the epithelium of a ...
Germinal epithelium of the testicle. ...
Histological section through testicul...
Schematic diagram of Spermatocytogenesis
Scheme showing analogies in the proce...
Human spermatozoön
The human female's reproductive system.
Schematic frontal view of female anatomy
Organs of the female reproductive sys...
Schematic vulva anatomy.
Uterus and right broad ligament, seen...
Sagittal section of the lower part of...
Posterior half of uterus and upper pa...
Vessels of the uterus and its appenda...
Median sagittal section of female pel...
Vertical section of mucous membrane o...
Histopathologic representation of end...
Section of the ovary. 1. Outer coveri...
Order of changes in ovary. - - 1...
Diagram of folliculogenesis, starting...
Histology of the preovulatory follicle
Section of vesicular ovarian follicle...
Human ovarian follicle
Diagram showing the reduction in numb...
Corpus luteum
Early folliculogenesis from primordia...
First stages of segmentation of a mam...
Steroidogenesis
Estrone
Androstendione converting to estrone
Estradiol
Estradiol - 3D
Conversion of testosterone to estradiol
Progesterone
Progesterone - 3D
Conversion of Pregnenolone to Progest...
Progesterone is important for aldoste...
Follicle Stimulating Hormone
The Activin dimer
Hormone levels during the menstrual c...
HCG polypeptide structure
Menstrual cycle
An ovary about to release an egg.
In most mammalian fertilization, hyal...
Acrosin is released from the acrosome...
Acrosome reaction on a Sea Urchin cell
Human ovum. The zona pellucida is see...
Blastocyst with an inner cell mass an...
Section through ovum imbedded in the ...
Primary chorionic villi. Diagrammatic.
Secondary chorionic villi. Diagrammatic
Blastodermic vesicle of Vespertilio m...
Section through embryonic disk of Ves...
Transverse section of a chorionic vil...
Scheme of placental circulation.
Placenta
Diagram showing earliest observed sta...
Diagram illustrating early formation ...
Diagram showing later stage of allant...
iagram of a transverse section, showi...
Surface view of embryo of Hylobates c...
Human embryo—length, 2 mm. Dorsal vie...
Model of human embryo 1.3 mm. long. (...
Section through the embryo.
Human embryo of about fourteen days, ...
Human embryo of 2.6 mm.
Fetal circulation; the umbilical vein...
Human embryo from thirty-one to thirt...
The liver and the veins in connection...
Diagram of the vascular channels in a...
Front view of two successive stages i...
Sketches in profile of two stages in ...
Sectional plan of the gravid uterus i...
Anatomical model of a human pregnancy
Fetus in utero, between fifth and six...
Opened uterus with cat fetus in midge...
Fetus of about eight weeks, enclosed ...
Embryo at 4 weeks after fertilization
Fetus at 8 weeks after fertilization
Fetus at 18 weeks after fertilization
Fetus at 38 weeks after fertilization
Woman at the first month of pregnancy.
Relative size in 3rd Month (simplifie...
Relative size in 5th Month (simplifie...
Relative size in 9th Month (simplifie...
7 weeks
13 weeks
17 weeks
20 weeks
The Lactating Breast. When the baby ...
Cross section of the breast of a huma...
Dissection of a lactating breast. - ...
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