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

Puncturella, mantle and shell with a foramen in front of the apex, British.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 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

The name of a spinal cord region corresponds to the level at which spinal nerves pass through the intervertebral 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 parallel the vertebral arteries and travel through the transverse foramina of the cervical vertebrae.

From Textbooks ● Jun. 19, 2013

Nevertheless, its small external and cranial size, short anterior palatine foramina, and bright color seem to separate it from other subspecies of P. boylii in the eastern part of the range of the species.

From Taxonomic Status of Some Mice of The Peromyscus boylii Group in Eastern Mexico, With Description of a New Subspecies by Ticul Alvarez