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

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

From Textbooks ● Jun. 19, 2013

A small, oval foramen involves the posterior part of the ethmoid and anterior portion of frontoparietals; continued ossification in older specimens fills in the foramen, thereby resulting in a solidly roofed cranium.

From Neotropical Hylid Frogs, Genus Smilisca by William E. Duellman

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

The interventricular foramina connect the frontal region of the lateral ventricles with the third ventricle.

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

The breast bone does not show the keel which is so remarkable in Rhamphorhynchus, which may be attributed to its under side being exposed, so as to exhibit the pneumatic foramina.

From Dragons of the Air An Account of Extinct Flying Reptiles by H. G. Seeley