Endocrine Flashcards
Starting superior list the organs of the endocrine system(9)
Pineal
Hypothalamus
Thyroid gland
Pituitary gland
Parathyroid Gland
Thymus
Adrenal Gland
Pancreas
Gonads
A hormone can only affect which type of cells
Target cells
Does the endocrine system use ducts?
No
Which is the master gland
Pituitary
Thyroid produces which hormones (2)
What are their affects
Thyroxine (t3 & t4)
Stimulates metabolism
Calcitonin
Lowers blood calcium
Pituitary hormone which helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.
Testicular growth in males helps produce a protein needed for creating and maintaining sperm
Folicile-stimulating hormone
This organ regulates blood sugar by releasing insulin and glucagon
Pancreas
What does insulin do
Glucogan
Insulin helps blood sugar enter the bodys cells, lowering blood sugar
Glucogan increases blood sugar
Which cells release Insulin
Which release glucagon
Beta cells release insulin
Alpha cells release glucagon
What structure is responsible for getting the nervous and endocrine system to work together?
Hypothalamus
Hypothalamus secrets these hormones
What are their functions
corticotrophin-releasing hormone,
growth hormone-releasing hormone,
gonadotrophin-releasing hormone thyrotrophin-releasing hormone
somatostatin
dopamine
The anterior pituitary gland produces which hormones? (6)
Adrenocorticotropic: Stimulates the adrenal glands to secrete steroid hormones, Cortisol
Growth Hormone
Luteinising Hormone: Ovulation females & Androgen in Males
FSH (Folice Stimulting Hormone) Growth of Eggs & Sperm
Prolactin Produces Milk
Thyroid Stimulting Hormone
Luteinising Hormone & Follicle Stimulting Hormone are also known as
Gonadotropins
Releases Oxytocin & Vasopressin
Posterior Pituitary
This gland is concerned with metabolism and releases T³ & T⁴
Thyroid
This gland increases blood calcium levels by a hormone that shares its name
Parathyroid
Parathyroid hormone
Which hormone raise blood calcium levels
Which lowers it
Where are each produced
Calcitrol proximal tubule KidneysRaises it
Parathyroid hormone Raises it
Calcitonin Thyroid gland Lowers it
Relases Cortisol & Aldosterone
What do Cortisol and Aldostrone do?
Adrenal Cortex
Cortisol is the Stress Hormone and releases glucose into the blood.
Aldosterone regulates salt and water
Cortisol is a stress hormone what is its function
Where is it released from?
Increases blood sugar & Anti-inflammatory
Adrenal Cortex
Aldosterone released from the adrenal cortex serves what function
Regulates blood volume
Salt and water balance
Adrenal Medulla releases a class of hormones called:
Gives examples of these hormones
What do they do?
Catecholamines
Epinephrine aka Adrenaline
Norepinephrine
Fight or flight response
Gonads in females and males
Ovaries
Testies
Classes of hormones
Autocrine: functions where
Paracrine: functions where
Endocrine: functions where
At the cell that secrets them
Regionally: exp. Hypothalamus that affect the pituitary gland
Endocrine: Distance
3 types of Hormones are _______ , ________ , ______.
Where are these hormone receptors?
Protein / Polypeptide & Steroids (Lipids)
Protein has a receptor on the cell surface and requires a 2nd messanger
Steroids the receptor is inside where steriods can pass freely
Tyrosine Derivatives (Thyroid & Catecholamines)
HPA Axis hypothalamic-adrenal Axis is associated with what
Fight or flight
HPT hypothalamus-Pituitary-thyroid axis is associated with what?
Rest and digest
Which hormone of the posterior pituitary increases blood pressure by water retention
Vasopressin
Role of the thymus ( Immune System)
Site where Tcells mature
Chemcial signals are called
Ligands
Intracellular chemical signals go where?
Produced in one part of the cell “membrane” and travel to other part of the cell, cytoplasm or nucleus.
Intercellular chemical signals go where
Signals from cell to cell
Exp. Prostaglandin-like chemicals that are secreted in responses to inflammation.
Is an example of this kind of intercellular chemical signal
Autocrine:
These chemical signals are released by cells and have a local effect on the same cell type.
These chemical signals are released by cells and have a local effect on the same cell
Autocrine chemical signals
These chemical signals are released by cells and have an effect on other cell type.
Paracrine Chemical signals