Chapter 6 Flashcards
Define hormone
Chemicals that are released from endocrine glands
Define primary endocrine gland
Main function is to release hormones
Define secondary endocrine gland
Secondary function is to release hormones
What are some primary endocrine glands
Hypothalamus Pituitary gland Pineal gland Thymus Thyroid Gonads
What are some secondary endocrine glands
Heart
Liver
Kidneys
Stomach
What are the factors that control hormone concentration in the blood
Rate of hormone secretion
Amount of hormone transported bound to carrier proteins
Rate at which hormone is metabolized
When blood glucose is high what happens?
High glucose sensed by pancreas
Insulin released
Cells increase glucose uptake
Blood glucose decreases
What hormone is released when blood glucose is low?
Glucagon
What is a negative feedback loop
If a regulated variable changes, the system will take measures to get that variable back to normal
What a positive feedback loop
If a regulated variable changes, the system takes measures that will increase the response