(Science: microscopy) The exit pupil of a microscope objective lens. The objective lens back aperture, which... Read More
Any member of the Synapsida clade of animals is referred to as a synapsid. They are believed to have descended from the... Read More
(Science: physics) The opening in an optical system which restricts the size of the bundle of rays incident on a... Read More
Often, when persons think of the female reproductive system, they think of the vagina. However, the female... Read More
noun, plural: functions
(biology) The special, normal, proper physiologic activity of a body part or an... Read More
noun, plural: pupillary light reflexes
A reflex marked by the constriction of the pupil in response to the... Read More
A small, somewhat circular aperture on the extremity of the extocervix
At the lower part of the... Read More
Apertura mediana ventriculi quarti
median aperture of fourth ventricle: a deficiency in the lower portion of the roof of the... Read More
noun, singular: lamella
Thin structures resembling a plate.
Intergrana thylakoids, i.e.... Read More
What is the Reproductive System?
The reproductive system of an organism is the biological system made up of all the... Read More
That portion of the inferior aperture of the thorax formed by the articulated cartilages of the seventh to tenth... Read More
pelvic inlet -->
superior pelvic aperture
The upper opening of the true pelvis, bounded anteriorly by the pubic symphysis... Read More
Apertura thoracis superior -->
superior thoracic aperture
The upper boundary of the bony thorax composed of the first... Read More
Depth of field
(Science: microscopy) The depth or thickness of the object space that is simultaneously in acceptable... Read More
noun, plural: foramina, foramens
Any opening or perforation, orifice or fenestra, especially through a bone, and... Read More
1. (Science: anatomy) The narrow passage from the mouth to the pharynx, situated between the soft palate and the base... Read More
(Science: microscopy) The image of a bright point object as focused by a lens system. With monochromatic light, it... Read More
1. A youth or scholar of either sex under the care of an instructor or tutor. Too far in years to be a pupil now.... Read More
The pollen-receptive surface of a carpel or group of fused carpels, usually sticky.
The apical end of the style where... Read More
1. One of the two fleshy folds which surround the orifice of the mouth in man and many other animals. In man the lips... Read More
noun, plural: orifices
An opening or aperture; any external opening in the body of an animal.
In a... Read More
(Science: microscopy) thin glass, plastic, sapphire, SiO, NaCl, etc. Shaped into circles, squares, or rectangles... Read More
To snuff; to breathe or puff out; to snort.
Origin: Cf. F. Venter to blow, vent wind (see Ventilate); but prob... Read More
Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... Read More