Ocular Physiology

Cross-sectional diagram of the eye showing the lens, with the anterior and posterior chambers highlighted in yellow and green.

Aqueous Humour

Ocular Accommodation

Illustration of the retina’s layered structure, labeling the optic nerve, retinal cell types, retinal pigment epithelium, choroid, and sclera.

The Retina

Popular

Diagram comparing inspiration and passive expiration, with black arrows showing diaphragm movement and blue arrows showing external intercostal muscle activity.
Pulmonary Ventilation

Mechanics of Breathing

by Kamashi Pandirajan and Amit Mahabaleshwarkar

Diagram of a virus showing DNA or RNA inside a protein coat and outer envelope.
Infections

Viral Infection

by Farhana Patel

Diagram of the HPA axis showing stress and diurnal regulation influencing the hypothalamus, which releases CRH to stimulate the anterior pituitary to release ACTH. ACTH stimulates the adrenal cortex to produce cortisol, which affects multiple target organs and provides feedback inhibition.
Anterior Pituitary Gland

Cortisol and the HPA Axis

by Kishan Pankhania and Elly Voogt