foramen

A patent foramen ovale - or PFO - which is a small hole between the top two chambers of the heart.

From BBC ● Jan. 1, 2025

It had a prominent pineal foramen -- a hole in the top of its head that many lizard species use to sense sunlight and judge the length of daylight hours.

From Science Daily ● Nov. 29, 2023

The shape of the opening at the base of its skull—the foramen magnum—suggested Sahelanthropus balanced its head on top of a vertical neck, similar to upright walkers such as today’s humans.

From Science Magazine ● Aug. 24, 2022

The smaller, more inferior lesser sciatic foramen is formed by the lesser sciatic notch of the hip bone, together with the sacrospinous and sacrotuberous ligaments.

From Textbooks ● Jun. 19, 2013

Anteromedially, the parietal forms the roof and posterior margin of the optic foramen.

From A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) by John Wellman

Lizards and iguanas, however, sport a single row of large holes above their teeth, called foramina, where blood vessels and nerves pass through.

From Science Magazine ● Mar. 29, 2023

These veins arise from the base of the brain and the cervical region of the spinal cord, and flow largely through the intervertebral foramina in the cervical vertebrae.

From Textbooks ● Jun. 19, 2013

These ventricles are connected to the third ventricle by two openings called the interventricular foramina.

From Textbooks ● Jun. 19, 2013

The sacral nerves emerge from the sacral foramina along the length of that unique vertebra.

From Textbooks ● Jun. 19, 2013

All have been referred to Z. hudsonius although one female from Stonehouse Creek shows some tendency toward Z. princeps in external measurements, length of upper molariform tooth-row, and length of incisive foramina.

From Mammals taken Along the Alaska Highway by Rollin H. (Rollin Harold) Baker