7 - homeostasis

Question 1

homeostasis

Answer 1

process by which body’s substances and characteristics (body temp, glucose levels, etc) are maintained at their optimal level

Question 2

energy delivered in three forms

Answer 2

lipids (fats), amino acids (breakdown products of proteins), glucose

Question 3

energy stored in three forms

Answer 3

fats (85%)
glycogen (14.5%)
–> glycogenesis converts glucose into glycogen –> insulin
–> glycogenolysis converts glycogen into glucose –> glucagon
proteins (0.5%)

Question 4

metabolism

Answer 4

chemical changes by which energy is made available for the organism to use

Question 5

basal metabolism

Answer 5

consumption of energy by basic life sustaining functions of the body

Question 6

three phases of metabolism

Answer 6

cephalic, absorptive, fasting

Question 7

cephalic phase

Answer 7

preparatory phase, begins with sight/smell/though and ends with food being absorbed into bloodstream

• contains digestive phase
• insulin released by pancreas (in anticipation of glucose arrival)

Question 8

absorptive phase

Answer 8

• when energy absorbed into bloodstream meets body’s energy needs
• glucodetecters in liver signals pancreas to release insulin

Question 9

fasting phase

Answer 9

• when unstirred energy has been used and body is withdrawing reserves
• high levels of glucagon and low levels of insulin