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

Located near the midpoint of the supraorbital margin is a small opening called the supraorbital foramen.

From Textbooks ● Jun. 19, 2013

Topotypes of wasatchensis can be readily distinguished from those of Thomomys talpoides levis and parowanensis by larger size; more massive, ridged, angular skulls; larger tympanic bullae; large, ovoid foramen magnum; and relatively smaller interparietal.

From The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. by Durrant, Stephen D.

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

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

From Textbooks ● Jun. 19, 2013

If their cavities were connected with the lungs the foramina are inconspicuous and unlike the immense holes seen in the sides of the vertebræ.

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