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 branching pattern of this artery forms readily visible grooves on the internal surface of the skull and these grooves can be traced back to their origin at the foramen spinosum.

From Textbooks ● Jun. 19, 2013

The orbit contains seven muscles, six of which rise close to the optic foramen.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" by Various

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

From Textbooks ● Jun. 19, 2013

Openings here include the large foramen magnum, plus the internal acoustic meatus, jugular foramina, and hypoglossal canals.

From Textbooks ● Jun. 19, 2013

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

Fractures of the base usually take the form of a single fissure, or a series of fissures, which, as a rule, run through the foramina in their track.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Alexander Miles