The endocrine system Flashcards
What is the endocrine system?
A network of glands throughout the body that produce and secrete hormones
What are hormones?
The body’s chemical messengers
What are endocrine glands?
Special groups of cells within the endocrine system which produce and secrete hormones
What are the 4 major glands of the endocrine system?
The pituitary gland, the adrenal gland, the ovaries and the testes
How is the endocrine system regulated?
Feedback loops
What do hormones bind to?
Target cells
What do target cells have?
Receptors specific to a certain hormone
What is the main role of the pituitary gland?
Influences the release of hormones from other glands
What is the pituitary gland controlled by?
The hypothalamus
What are the 2 parts of the pituitary gland?
Anterior pituitary gland and posterior pituitary gland
What does the anterior pituitary gland release?
ACTH
What is ACTH released in response to?
Stress
What does ACTH stimulate?
The adrenal gland to release cortisol
How many adrenal glands are there?
2
What is the outer part of the adrenal gland called?
Adrenal cortex