Flask-shaped (piriform) (Page 128) Columnar (Page 128) Arrangement One row (Page 128) 3-4 rows (Page 128) Microvilli (Stereocilia) Arranged in a linear row (U-shape) (Page 128) Arranged in a V-shape (Page 128) Nerve Endings (Base) Mainly afferent nerve endings (Page 128) Both afferent and efferent nerve endings (Page 128) 19:T438,

Histological Layers of the Cornea:

The corneal epithelium: Stratified squamous (non-cornified) epithelium (Page 99).
Bowman's membrane: Consists of small Type I collagen fibrils (Page 99).
The substantia propria (stroma): Forms the bulk of the cornea, consists of collagen lamellae and keratocytes (Page 100).
Descemet's membrane: A thick basal lamina secreted by the endothelium, mainly Type VIII collagen (Page 100).
The corneal endothelium: A single layer of large, hexagonal squamous cells lining the inner surface (Page 100).

Basis of its Transparency (Page 100):

The uniform diameter and orderly arrangement of collagen fibers.
The cornea is avascular.
Ion pumps in the corneal endothelial cells maintain a critical fluid level.
The refractive indices of all el

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Eye & Ear Written 2026