Urethra
Urethra, duct that transmits urine from the bladder to the exterior of the body during urination. The…
Human skin
Human skin, in human anatomy, the covering, or integument, of the body’s surface that both…
Stroke
Stroke, also called apoplexy, sudden impairment of brain function resulting either from a substantial reduction…
Regeneration
Regeneration, in biology, the process by which some organisms replace or restore lost…
Higher cerebral functions
The neurons of the cerebral cortex constitute the highest level of control in the hierarchy of the nervous…
Basal ganglia
Deep within the cerebral hemispheres, large gray masses of nerve cells, called…
Cerebral ventricles
Deep within the white matter of the cerebral hemispheres are cavities filled…
Cerebral cortex
Lobes of the cerebral cortex The cerebral cortex is highly convoluted; the crest of a…
Neuronal development
In the second week of prenatal life, the rapidly growing blastocyst (the bundle of…




