NTR 307 Lecture Notes - Lecture 5: Diabetes Mellitus Type 1, Homeostasis, Ketone Bodies
Document Summary
Glucose as immediate energy (breakdown to produce atp) Glycogen is made when blood glucose is high (after a meal) Glycogen stored in liver (1-day"s worth) Tiny amount stored in the brain (few min"s worth) emergency only. Glycogen broken down when blood glucose is low (between meals/overnight) Muscle keeps it for itself (to be used during exercise) Liver as needed for the rest of the body. Uses ~60% total glucose (~120 g/d; ~420 kcal) When available glucose drops to of that, problems occur. To power the transmission of nerve impulses & to synthesis neurotransmitters. Secondary users: muscle, liver, adipose, kidneys, red blood cells. All of these (except red blood cells) have additional energy sources for use. Body uses glucose instead of fat (fat is conserved) Body converts excess glucose into fat for storage (fat is created) Fat cells can store almost unlimited stores of fat. Fat molecules are broken into and form ketone bodies (acidic)
