Molecules with unpaired electrons ---Very reactive in the body � either oxidizing (removing electrons) or reducing (adding electrons) from other molecules
free radicals
mechanisms that defend a set amount of adipose tissue: ______________
adipostat
energy is stored in _______ fat as triglycerides
white
_______ regulates the reproductive function of women in the hypothalamus; low body fat = no menstruation
leptin
____ is secreted by the stomach when its empty to stimulate hunger
ghrelin
insulin reduces hunger directly? True/false?
false; indirectly
_____ fat is responsible for nonshivering thermogenesis
brown
glucagon ____ conversion of glycogen to glucose in the liver
promotes
in the liver, fatty acids are converted to _________ bodies to be used as energy sources
ketone
Type ___ diabetes is an autoimmune disease
I
_______ makes skeletal muscles more sensitive to insulin
exercise
___DL lipids are "good" lipids
HDL
In diabetes, the increased glucose in the blood commonly leads to ________ and ________
blindness and gangrene
__________ is released as a part of GAS in response to stress
cortisol
_______ Acts on most cells in the body to increase rates of cellular respiration by decreasing intracellular ATP levels
thyroxine
growth hormone is secreted by the ____________ pituitary
anterior
IGF-1 mediates __________ growth
bone
Excessive release of growth hormone in childhood = _______
gigantism
Once the cartilage is converted to bone in the ____________, no more height can be achieved (growth)
epiphyseal plates
Excess release of growth hormone in adults = ___________, which includes growth of soft tissues, elongation of the jaw, and deformities of the face, hands, and feet
acromegaly
Inadequate production of growth hormone can produce several forms of ______________
dwarfism
Magnesium is needed to create _____, which a deficiency would lead to hypocalcemia
PTH
_______________ break down bone(resorb), while ___________ build bone up(deposition)
osteoclasts ; osteoblasts
__________ Inhibits resorption of bone by inhibiting osteoclast activity
calcitonin
Men are less prone to __________ because they make testosterone their whole lives while women stop making estrogen at menopause
osteoporosis
the BMR (basal metabolic rate) is affected by the ______ gland
thyroid
there are 9 essential amino acids, and __ essential fatty acids (essential = cannot be made within the body)
2
RDA in regard to food stands for
recommended dietary allowances
UV rays, pollution, poor nutrition, & stress are causes of increased _________
free radicals
apoptosis, degeneration (aging), cancer, inflammatory, neurological, & cardio diseases can result from _____ stress
oxidative
antioxidants ___ & ____ pick up unpaired electrons
vitamins C & E
NH2 (nitrogenous) waste is a result of protein metabolism. urea is _________, while ammonia is _________
non-toxic, toxic
damage to the VMHypothalamus (a hunger stimulation center), would result in __________ hunger
decreased
GLUT-4 is responsible for ________ transfer into skeletal muscles
insulin
increased blood glucose levels would be correlated with (increased or decreased?) insulin levels
increased
ketoacidosis is linked with which type of diabetes?
Type II
high levels of blood glucose can _________ blood vessels