Which Cranial Bone Is Called the "Keystone" of the Cranial

question 51

Multiple Choice

Which cranial bone is called the "keystone" of the cranial floor because it articulates with every other cranial bone?

• A)occipital
• B)frontal
• C)ethmoid
• D)parietal
• E)sphenoid

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Definitions:

On-Center

On-Center describes a type of neuronal response characterized by activation when the center of its receptive field is stimulated by light, while stimulation of the surrounding area inhibits activation.

Off-Surround

A concept in visual processing referring to the inhibitory mechanism surrounding the central point of stimulation, enhancing edge detection and contrast in visual perception.

Color Opponent Retinal Ganglion Cell

Color opponent retinal ganglion cells are neurons in the eye that help in the processing of color vision by responding differently to light from different parts of the color spectrum.

Glaucoma

A group of eye conditions that damage the optic nerve, often caused by abnormally high pressure in the eye, leading to loss of vision.