Anything that is considered alive must exhibit ALL 7 characteristics of life. A virus may show some characteristics, but it does not show all, so therefore, its not alive.
Answer;
Retinohypothalamic path
A small branch of the optic nerve, known as the retinohypothalamic path extends directly from the retina to the SCN.
Explanation;
The SCN is an abbreviations for suprachiasmatic nucleus or nuclei; which is a region in the hypothalamus. that is responsible for controlling circadian rhythms.
Retinohypothalamic path is a neural input pathway that extends directly from the retina to the SCN.
The spinal cord is in the backbone (aka spine). The spinal cord is part of the central nervous system
How I remember where the spinal cord is the root of the words spine and spinal cord is similar
Hope this helped!
~Just a girl in love with Shawn Mendes
<span>Blood is a liquid and has cellular parts. The liquid contains substances such as proteins and lipids. The cellular constituents are erythrocytes (red blood cells), leukocytes and platelets.</span>
