Science Image Archive for Teachers

Reproductive System

Royalty Free Images for Teachers

Thumbnails link to 800 by 600 slides.

The human male reproductive system

The human male reproductive system

Human male reproductive system and ad...

Human male reproductive system and ad...

Penis, testis, urethra, prostate, bla...

Penis, testis, urethra, prostate, bla...

Transverse section through the left s...

Transverse section through the left s...

Testicle of a cat: 1 Extremitas capit...

Testicle of a cat: 1 Extremitas capit...

1 Epididymis 2 Head of epididymis 3 L...

1 Epididymis 2 Head of epididymis 3 L...

1 Head or upper pole of testis - 2...

1 Head or upper pole of testis - 2...

The right testis, exposed by laying o...

The right testis, exposed by laying o...

microscopic picture of seminiferous t...

microscopic picture of seminiferous t...

Transverse section through the left s...

Transverse section through the left s...

1: Testicular septa - 2: Convoluted...

1: Testicular septa - 2: Convoluted...

The deeper branches of the internal p...

The deeper branches of the internal p...

Schematic drawing of testicle and epi...

Schematic drawing of testicle and epi...

Vertical section of the testis, to sh...

Vertical section of the testis, to sh...

The spermatic cord in the inguinal ca...

The spermatic cord in the inguinal ca...

Fundus of the bladder with the vesicu...

Fundus of the bladder with the vesicu...

Vertical section of bladder, penis, a...

Vertical section of bladder, penis, a...

Prostate with seminal vesicles and se...

Prostate with seminal vesicles and se...

Cross-section of vas deferens through...

Cross-section of vas deferens through...

Testis

Cross-section of seminiferous tubules...

Cross-section of seminiferous tubules...

Prostate

Prostate

Lobes of prostate

Lobes of prostate

Zones of prostate

Zones of prostate

Prostate histology

Prostate histology

Testosterone

Dehydroepiandrosterone

Dehydroepiandrosterone

Androstenedione

Androstenedione

Androsterone

Dihydrotestosterone

Dihydrotestosterone

Dihydrotestosterone 3D

Dihydrotestosterone 3D

A sperm cell attempts to penetrate an...

A sperm cell attempts to penetrate an...

Diagram of a human spermatozoon

Diagram of a human spermatozoon

Cross section of the epithelium of a ...

Cross section of the epithelium of a ...

Germinal epithelium of the testicle. ...

Germinal epithelium of the testicle. ...

Histological section through testicul...

Histological section through testicul...

Schematic diagram of Spermatocytogenesis

Schematic diagram of Spermatocytogenesis

Scheme showing analogies in the proce...

Scheme showing analogies in the proce...

Human spermatozoön

Human spermatozoön

The human female's reproductive system.

The human female's reproductive system.

The human female's reproductive system.

The human female's reproductive system.

Schematic frontal view of female anatomy

Schematic frontal view of female anatomy

Organs of the female reproductive sys...

Organs of the female reproductive sys...

Schematic vulva anatomy.

Schematic vulva anatomy.

Uterus and right broad ligament, seen...

Uterus and right broad ligament, seen...

Sagittal section of the lower part of...

Sagittal section of the lower part of...

Posterior half of uterus and upper pa...

Posterior half of uterus and upper pa...

Vessels of the uterus and its appenda...

Vessels of the uterus and its appenda...

Median sagittal section of female pel...

Median sagittal section of female pel...

Vertical section of mucous membrane o...

Vertical section of mucous membrane o...

Histopathologic representation of end...

Histopathologic representation of end...

Section of the ovary. 1. Outer coveri...

Section of the ovary. 1. Outer coveri...

Order of changes in ovary. - - 1...

Order of changes in ovary. - - 1...

Diagram of folliculogenesis, starting...

Diagram of folliculogenesis, starting...

Histology of the preovulatory follicle

Histology of the preovulatory follicle

Section of vesicular ovarian follicle...

Section of vesicular ovarian follicle...

Human ovarian follicle

Human ovarian follicle

Diagram showing the reduction in numb...

Diagram showing the reduction in numb...

Corpus luteum

Early folliculogenesis from primordia...

Early folliculogenesis from primordia...

First stages of segmentation of a mam...

First stages of segmentation of a mam...

Steroidogenesis

Steroidogenesis

Estrone

Androstendione converting to estrone

Androstendione converting to estrone

Estradiol

Estradiol - 3D

Conversion of testosterone to estradiol

Conversion of testosterone to estradiol

Progesterone

Progesterone - 3D

Progesterone - 3D

Conversion of Pregnenolone to Progest...

Conversion of Pregnenolone to Progest...

Progesterone is important for aldoste...

Progesterone is important for aldoste...

Follicle Stimulating Hormone

Follicle Stimulating Hormone

The Activin dimer

The Activin dimer

Hormone levels during the menstrual c...

Hormone levels during the menstrual c...

HCG polypeptide structure

HCG polypeptide structure

Menstrual cycle

Menstrual cycle

An ovary about to release an egg.

An ovary about to release an egg.

In most mammalian fertilization, hyal...

In most mammalian fertilization, hyal...

Acrosin is released from the acrosome...

Acrosin is released from the acrosome...

Acrosome reaction on a Sea Urchin cell

Acrosome reaction on a Sea Urchin cell

Human ovum. The zona pellucida is see...

Human ovum. The zona pellucida is see...

Blastocyst with an inner cell mass an...

Blastocyst with an inner cell mass an...

Section through ovum imbedded in the ...

Section through ovum imbedded in the ...

Primary chorionic villi. Diagrammatic.

Primary chorionic villi. Diagrammatic.

Secondary chorionic villi. Diagrammatic

Secondary chorionic villi. Diagrammatic

Blastodermic vesicle of Vespertilio m...

Blastodermic vesicle of Vespertilio m...

Section through embryonic disk of Ves...

Section through embryonic disk of Ves...

Transverse section of a chorionic vil...

Transverse section of a chorionic vil...

Scheme of placental circulation.

Scheme of placental circulation.

Placenta

Diagram showing earliest observed sta...

Diagram showing earliest observed sta...

Diagram illustrating early formation ...

Diagram illustrating early formation ...

Diagram showing later stage of allant...

Diagram showing later stage of allant...

iagram of a transverse section, showi...

iagram of a transverse section, showi...

Surface view of embryo of Hylobates c...

Surface view of embryo of Hylobates c...

Human embryo—length, 2 mm. Dorsal vie...

Human embryo—length, 2 mm. Dorsal vie...

Model of human embryo 1.3 mm. long. (...

Model of human embryo 1.3 mm. long. (...

Section through the embryo.

Section through the embryo.

Human embryo of about fourteen days, ...

Human embryo of about fourteen days, ...

Human embryo of 2.6 mm.

Human embryo of 2.6 mm.

Fetal circulation; the umbilical vein...

Fetal circulation; the umbilical vein...

Human embryo from thirty-one to thirt...

Human embryo from thirty-one to thirt...

The liver and the veins in connection...

The liver and the veins in connection...

Diagram of the vascular channels in a...

Diagram of the vascular channels in a...

Front view of two successive stages i...

Front view of two successive stages i...

Sketches in profile of two stages in ...

Sectional plan of the gravid uterus i...

Sectional plan of the gravid uterus i...

Anatomical model of a human pregnancy

Anatomical model of a human pregnancy

Fetus in utero, between fifth and six...

Fetus in utero, between fifth and six...

Opened uterus with cat fetus in midge...

Opened uterus with cat fetus in midge...

Fetus of about eight weeks, enclosed ...

Fetus of about eight weeks, enclosed ...

Embryo at 4 weeks after fertilization

Embryo at 4 weeks after fertilization

Fetus at 8 weeks after fertilization

Fetus at 8 weeks after fertilization

Fetus at 18 weeks after fertilization

Fetus at 18 weeks after fertilization

Fetus at 38 weeks after fertilization

Fetus at 38 weeks after fertilization

Woman at the first month of pregnancy.

Woman at the first month of pregnancy.

Relative size in 3rd Month (simplifie...

Relative size in 3rd Month (simplifie...

Relative size in 5th Month (simplifie...

Relative size in 5th Month (simplifie...

Relative size in 9th Month (simplifie...

Relative size in 9th Month (simplifie...

7 weeks

13 weeks

17 weeks

20 weeks

The Lactating Breast. When the baby ...

The Lactating Breast. When the baby ...

Cross section of the breast of a huma...

Cross section of the breast of a huma...

Dissection of a lactating breast. - ...

Dissection of a lactating breast. - ...

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