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.
There is often an optional summer session half as long as a full semester. A trimester system divides the academic year into three terms of 14 to 16 weeks each, with attendance required in two trimesters per year, to total 28 to 32 weeks of instruction.