Regulation of reproduction
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REGULATION OF REPRODUCTION. CHAPTER 5. Brain – Hypothalamus - Pituitary Gland. PINEAL. Melatonin. HYPOTHALAMUS. GnRH (Gonadotropin Releasing Hormone). ANTERIOR PITUITARY. LH (Luteinizing Hormone) FSH (Follicle Stimulating Hormone) PROLACTIN TSH (Thyroid Stimulating Hormone)

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Regulation of reproduction

Brain – Hypothalamus - Pituitary Gland

PINEAL

Melatonin

HYPOTHALAMUS

GnRH (Gonadotropin Releasing Hormone)

ANTERIOR PITUITARY

LH (Luteinizing Hormone)

FSH (Follicle Stimulating Hormone)

PROLACTIN

TSH (Thyroid Stimulating Hormone)

ACTH (Adrenal Cortical Tropic Hormone)

STH or GH (SOMATOTROPIN)

POSTERIOR PITUITARY

OXYTOCIN

ADH (Antidiuretic Hormone)


Regulation of reproduction

Suckling stimulus

Tactile stimulus of

the penis

Afferent neurons

Afferent neurons

Muscles in

excurrent

ducts

Oxytocin production

release from the

posterior lobe

Ejaculation

Myoepithelial cell

around alveoli

Milk letdown


Regulation of reproduction

Suckling stimulus

Tactile stimulus of

the penis

Afferent neurons

Afferent neurons

Muscles in

excurrent

ducts

Oxytocin production

release from the

posterior lobe

Ejaculation

Myoepithelial cell

around alveoli

Milk letdown


Regulation of reproduction

P4 -- - - - - - - - -


Regulation of reproduction

Hormones classified by source

Hypothalamus

Uterus

Gonadotropin Releasing Hormone

Oxytocin

Prostaglandin F2a

Pituitary

Placenta

Luteinizing hormone

Follicle stimulating hormone

Prolactin

Oxytocin

TSH, ACTH, STH, ADH

Progesterone

Estrogen

Placental Lactogen

Gonads

Equine Chorionic Gonadotropin

Estrogen

Progesterone

Testosterone

Inhibin

Oxytocin

Relaxin

Human Chorionic Gonadotropin


Regulation of reproduction

Hormones classified by mode of action

Neurohormones

Oxytocin

Releasing Hormones

Gonadotropin Releasing Hormone

Gonadotropins

Luteinizing Hormone

Follicle Stimulating Hormone

Human chorionic gonadotropin

Equine chorionic gonadotropin

Sexual Promoters

Estrogen

Progesterone

Testosterone

Luteolytic - Prostaglandin F2a

Pregnancy Maintenance / Lactogenic

General Metabolic – ACTH, STH, TSH


Regulation of reproduction

Hormones classified by biochemical structure

Peptides - small proteins – few amino acids

Gonadotropin releasing hormone

Glycoproteins – polypeptides with carbohydrate moieties

Luteinizing hormone

Follicle stimulating hormone

Thyroid stimulating hormone

Inhibin

Activin

Prolactin

Steroids – synthesized from cholesterol

Progesterone

Testosterone

Estradiol

Prostaglandins – unsaturated hydroxy fatty acids from arachidonic acid

Prostaglandin F2a

Prostaglandin E2

Pheromones