Endocrine System Flashcards
What are protein hormones?
Made up of amino acids, they function by attaching to the cell membranes of their target cells
What are steroid hormones?
Made up of lipids/cholesterol, are able to penetrate the cell membranes of their target cells. They attach directly to specific receptor sites inside the target cell
How do exocrine glands release their contents?
Through ducts
How do endocrine glands release their contents?
Through the bloodstream
Follicle Stimulating Hormone (FSH), luteinizing hormone (LH), thyroid stimulating hormone (TSH), growth hormone (GH), prolactin, and adrenocorticotropic hormone (ACTH) are released from the?
Anterior pituitary
Oxytocin, anti-diuretic hormone (ADH) are released from the?
Posterior pituitary
What are the target cells of follicle stimulating hormone (FSH)?
Ovary and testes
What is the function of follicle stimulating hormone (FSH)?
Allows the ovarian follicles to mature. The ovarian follicles secrete estrogen. Within the testes, FSH allows the seminiferous tubules to mature
What are the target cells of luteinizing hormone (LH)?
Ovary and testes
What is the function of luteinizing hormone (LH)?
Production of estrogen and progesterone or testosterone
What are the target cells of prolactin?
Mammary glands
What is the function of prolactin?
Stimulates milk production in breast
What are the target cells of thyroid stimulating hormone (TSH)?
Thyroid gland
What is the function of thyroid stimulating hormone (TSH)?
Stimulates secretion of thyroid hormones
What are the target cells of growth hormone (GH)?
Body cells
What is the function of growth hormone (GH)?
Stimulates growth
What are the target cells of adrenocorticotropic hormone (ACTH)?
Adrenal cortex
What is the function of adrenocorticotropic hormone (ACTH)?
Stimulates glucocorticoid synthesis and secretion
What are the target cells of oxytocin?
Uterus
What is the function of oxytocin?
Directs the uterus to start contracting in preparation for childbirth, also stimulates the mammary glands to release milk
What are the target cells of antidiuretic hormone (ADH)?
Kidney
What is the function of antidiuretic hormone (ADH)?
Allows the body to retain water
What are the target cells of thyroxine?
General
What is the function of thyroxine?
Stimulates metabolism, growth and development
What is the function of calcitonin?
Prevents calcium loss therefore lowering blood calcium levels