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Embryology

Embryology is the study of the prenatal development of gametes and subsequent development of the embryo and foetus.

Gametogenesis is the process whereby a haploid cell (n) is formed from a diploid cell (2n) through meiosis and cell differentiation. Gametogenesis in the male is known as spermatogenesis and produces spermatozoa. Gametogenesis in the female is known as oogenesis and result in the formation of ova.

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Gametogenesis

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Adrenal Glands

The Zona Reticularis

by Kamashi Pandirajan

Hormones and Regulation

Menstrual Cycle

by Grace Fitzgerald

Diagram showing the HPA axis with CRH being released from the hypothalamus, stimulating the anterior pituitary to release ACTH, stimulating the adrenal glands to release cortisol which has effects on multiple effector target organs including the liver, muscle, bone, immune cells, CNS. Also demonstrates negative feedback action of cortisol on the hypothalamus and anterior pituitary and regulatory effects of stress and diurnal regulation
Anterior Pituitary

Cortisol and the HPA Axis

by Kishan Pankhania and Elly Voogt