Mindblown: a blog about philosophy.

A nerve cell.  

Nerve sheath. Thin tissue sheath enclosing certain nerve fibers. The outer sheath, formed of Schwann cells, which covers the myelin sheath around a nerve fibre. Thin membranous sheath enclosing a nerve fiber; also called neurolemma. The sheath of the axon of a nerve fiber. The neurilemma of a medullated fiber contains myelin laid down by…

The epithelial tube that develops from the neural plate to form the embryo’s central nervous system and from which the brain and spinal cord develop. A tube lined with ectodermal cells running the length of an embryo, which develops into the brain and spinal cord. In the embryo, a tube of ectodermal tissue from which…

Neural watch sheet.  

A groove on the embryo formed by the unfolding of the outer layer of cells and destined to become the nervous system in humans. A groove on the back of an embryo formed as the neural plate closes to form the neural tube. A longitudinal indentation that forms on the dorsal surface of the embryonic…

The patterns of veins in a leaf that form a network.  

Proportion of dietary nitrogen that is retained by the body. A measure of protein quality. It is the percentage ratio of nitrogen retained by rats to their nitrogen intake; the nitrogen retained is the difference in carcass nitrogen (determined experimentally) between rats fed a test diet containing the test protein and those fed a diet…

Frenetic housecleaning by a pregnant woman in the late stage of pregnancy.  

Stress.  

A state of emotional tension, restlessness, and hypersensitivity. An excessive state of nervous system sensitivity marked by disrupted mental composure and stability, muscle tremors or weakness, and an uneasy self-awareness.