A number of theories have been proposed to explain the development of hepatic encephalopathy in patients with cirrhosis. Some investigators contend that hepatic encephalopathy is a disorder of astrocyte function. Astrocytes account for about one third of the cortical volume.
Mar 10, 2015. College semesters are about 15 weeks long. Most fall semesters begin in September and end in December. Spring semester begins in January and ends in April. This means that in the ânormalâ academic year, students are in classes for approximately six months.
It divides the academic year into four quarters, each of which is usually 12 weeks long. Three of the four quarters (Autumn/Fall, Winter, and Spring, operating from September until June or from August until May) are thus equivalent to two 18-week semesters.