Download - Hormonal Influences on Metabolism
Heather BowersMS I
Hormonal Influences on Metabolism
Definition – ability or capacity for work
What do we use energy for?
Where does our energy come from?
Homeostasis
Energy
Physical activity
Digestion
Where Does All Our Energy Go?
Basic Metabolic Rate
Amount of energy needed for basic functioning of major organs in a resting state
Dependent on gender, _____, height, & __________
http://www.bmi-calculator.net/bmr-calculator
Where Does All Our Energy Go?
Energy Usage
Basal ProcessesActivity *Thermogenesis & digestion
Where Does All Our Energy Go?
Normal Adult
LiverBrainSkeletal MuscleKidneysHeartOther
Basal Processes
Where Does Our Energy Come From?
Where Does Our Energy Come From?
Metabolism
Catabolism – chemical reactions occurring within cells
that break _________molecules into _____________
molecules & release energy
Anabolism – chemical reactions occurring within cells
that build __________ molecules from ___________ molecules; this process uses or stores energy
Energy Homeostasis
Calories are a measure of energyAmount of energy required
________________________
Macromolecules are a source of energy
Krebs Cycle produces ATPATP = energy
Energy Production
Hormonal Influences on Metabolism
Insulin & GlucagonInsulin
Glucagon
Blood Sugar Blood Sugar
_____________ glands
Regulated by nervous system
“Fight or flight” responseO2 & glucose to brain?O2 & glucose to muscles?Heart rate?Digestion?Pupils?Immune response?
Epinephrine
Adrenal glands
Normal function:Contributes to “fight or flight”Restores normal state Especially __________ function
“________ hormone”_______ blood pressureDecreased immunityIncreased __________________Muscle & bone lossSuppressed thyroid function
Cortisol
From _________ glandT3 & T4, calcitonin
Generally increases __________________________ Respiration rate? Temperature? Appearance?
Increases ___________ & ________ of contraction
Thyroxine
Hypothalamus
Thyroid Gland
Thyroxine Control
Pituitary Gland