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Patent ductus arteriosus (PDA) is a medical condition in which the ductus arteriosus fails to close after birth: this allows a portion of oxygenated blood from the left heart to flow back to the lungs from the aorta, which has a higher blood pressure, to the pulmonary artery, which has a lower blood pressure.
An epicanthic fold or epicanthus [6] is a skin fold of the upper eyelid that covers the inner corner (medial canthus) of the eye. [3] However, variation occurs in the nature of this feature and the possession of "partial epicanthic folds" or "slight epicanthic folds" is noted in the relevant literature.
“Any girl giving me a note secretly on a date, I’m gonna believe the girl. She felt compelled enough to get involved, which means it’s something,” read a third comment.
A particular type of anatomically correct dolls are used in law enforcement and therapy. These dolls have detailed depictions of all the primary and secondary sexual characteristics of a human: "oral and anal openings, ears, tongues, nipples, and hands with individual fingers" for all and a "vagina, clitoris and breasts" for each of the female dolls and a "penis and testicles" for each of the ...
Several layers such as the neural tube, neural crest, surface ectoderm, and mesoderm contribute to the development of the eye. [2] [3] [4] Eye development is initiated by the master control gene PAX6, a homeobox gene with known homologues in humans (aniridia), mice (small eye), and Drosophila (eyeless). The PAX6 gene locus is a transcription ...
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...
Negative afterimages are generated in the retina but may be modified like other retinal signals by neural adaptation of the retinal ganglion cells that carry signals from the retina of the eye to the rest of the brain. [3] Normally, any image is moved over the retina by small eye movements known as microsaccades before much adaptation can occur ...
Paul Wesley took an interesting approach to his chemistry read with Nina Dobrev for The Vampire Diaries — which included him ignoring his potential costar before the audition. “I had a real ...