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.

+ Read more
Diagram of oogenesis showing a primary oocyte progressing through maturation to a secondary oocyte and first polar body, then forming a mature ovum and polar bodies.

Gametogenesis

Popular

Diagram comparing smooth, parallel flow in (a) with irregular, crossing flow paths in (b) between channel walls of separation d.
Circulation

Blood Flow in Vessels

by Georgie Banks and Kaitlyn Whitelaw

Microscopic image showing pink-stained simple cuboidal epithelial cells lining irregular tubular spaces.
Tissue Structure

Epithelial cells

by Charlotte Smith

Diagram showing phagocytosis: a bacterium binds to receptors, forms a phagosome, fuses with a lysosome into a phagolysosome, and releases soluble debris by exocytosis.
Innate Immune System

Phagocytosis

by Ade Folorunso