Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

endocrine system

QuestionAnswer
What is the primary function of the endocrine system? It regulates physiological processes through biochemical reactions using hormones.
What are the main control mechanisms of the endocrine system? Autocrine: Affects the same cell (e.g., cytokines). Paracrine: Affects nearby cells (e.g., local signaling molecules). Endocrine: Hormones travel via the bloodstream to distant cells. Neurohormones: Hormones released by neurons, acting similarly to end
What are the three major hormone classes? Peptide Hormones: Water-soluble, act on membrane receptors (e.g., insulin). Steroid Hormones: Derived from cholesterol, lipophilic, act on intracellular receptors (e.g., cortisol, estrogen). Amino Acid-Derived Hormones: Derived from tyrosine or tryptoph
How do peptide hormones act on target cells? Bind to membrane receptors and activate second messengers like cAMP, altering cell function.
How do steroid hormones act on target cells? They cross the cell membrane and bind to intracellular receptors, influencing gene transcription.
How do amino acid-derived hormones function? Catecholamines (e.g., epinephrine) bind to membrane receptors. Thyroid hormones behave like steroids, binding to intracellular receptors.
What is the role of the hypothalamus in the endocrine system? It regulates hormonal activity via the hypothalamic-pituitary axis.
What is the difference between the anterior and posterior pituitary glands? Anterior Pituitary: Receives releasing/inhibiting hormones from the hypothalamus and secretes hormones (e.g., TSH, ACTH). Posterior Pituitary: Stores and releases hormones made in the hypothalamus (e.g., ADH, oxytocin).
What are the primary functions of thyroid hormones (T3, T4)? Regulate metabolic rate. Influence growth and development.
How do thyroid hormones act on cells? They penetrate cell membranes and bind to intracellular receptors, affecting gene expression.
What are the two main parts of the adrenal glands, and their functions? Adrenal Cortex: Produces corticosteroids like aldosterone (fluid balance) and cortisol (stress response). Adrenal Medulla: Secretes epinephrine and norepinephrine, mimicking sympathetic nervous system activation.
What are the Islets of Langerhans, and what do they do? Clusters of endocrine cells in the pancreas that regulate blood glucose.
What is the role of insulin? Secreted by beta cells. Lowers blood glucose by increasing cellular uptake and utilization.
What is the role of glucagon? Secreted by alpha cells. Raises blood glucose by stimulating glycogen breakdown in the liver.
Why is the endocrine system essential? It maintains homeostasis, growth, reproduction, and metabolic regulation.
What system regulates hormone secretion and activity? Feedback loops, primarily negative feedback.
What are the major endocrine glands? Hypothalamus & Pituitary (central control). Thyroid (metabolism). Adrenal glands (stress response). Pancreas (glucose regulation)
Created by: REDZ17
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards