CB7 Other hormones Flashcards
What is a hormone?
A chemical messenger carried by the blood.
Which is faster, the nervous system or hormonal system?
Nervous system
What type of gland releases hormones?
Endocrine
What are the 6 main endocrine glands?
Pituitary, thyroid, adrenal, ovary, testis, pancreas
What is a target organ?
An organ affected by a specific hormone.
What is the function of the hormone thyroxine?
Increases metabolic rate.
What is your metabolic rate?
The rate at which the energy stored in food is transferred by all the reactions that take place in your body.
What are 2 target organs of thyroxine?
Heart, liver
What gland secretes thyroxine?
Thyroid
What hormone stimulates the secretion of thyroxine?
TSH
What gland secretes TSH?
Pituitary
What hormone stimulates the secretion of TSH?
TRH
What gland secretes TRH?
Hypothalamus
What is negative feedback?
Where an increase in a condition directly brings about a decrease in that same condition.
What is the function of the hormone adrenaline?
Prepare the body for the “fight or flight” response.
What are 3 target organs of adrenaline?
Heart, blood vessels, liver
What gland secretes adrenaline?
Adrenal
What stimulates the secretion of adrenaline?
Potentially dangerous stimulus leading to an electrical impulse from a reflex arc reaching the adrenal glands.
What is homeostasis?
Maintaining the internal conditions of the body.
What are 3 internal conditions of the body that need to be maintained?
Temperature, blood glucose concentration, water content
