Mryntu

Can a stoichiometric mixture of oxygen and methane exist as a liquid at standard pressure and some (low) temperature?

Can a College of Swords bard use a Blade Flourish option on an opportunity attack provoked by their own Dissonant Whispers spell?

How does a computer interpret real numbers?

Can I still be respawned if I die by falling off the map?

How can I write humor as character trait?

Strong empirical falsification of quantum mechanics based on vacuum energy density

Is there a way to get `mathscr' with lower case letters in pdfLaTeX?

How could a planet have erratic days?

Why does the Sun have different day lengths, but not the gas giants?

Using substitution ciphers to generate new alphabets in a novel

Do the primes contain an infinite almost arithmetic progression?

Can I visit Japan without a visa?

Does the Linux kernel need a file system to run?

How much character growth crosses the line into breaking the character

What happens if you are holding an Iron Flask with a demon inside and walk into an Antimagic Field?

Why Shazam when there is already Superman?

How should I respond when I lied about my education and the company finds out through background check?

Can a Canadian Travel to the USA twice, less than 180 days each time?

Did arcade monitors have same pixel aspect ratio as TV sets?

Multiplicative persistence

I'm the sea and the sun

Fear of getting stuck on one programming language / technology that is not used in my country

What are some good ways to treat frozen vegetables such that they behave like fresh vegetables when stir frying them?

Angel of Condemnation - Exile creature with second ability

What's the difference between releasing hormones and tropic hormones?

Are there records of monozygotic twins in which one experiences androgen insensitivity syndromeDoes hypothalamus regulate posterior pituitary gland?What is basis of multifunctionality of “master glands” in the endocrine system?What's the feedback regulation of Thyroid diseases and body temperature?Difference between the inactivation of neurotransmitters and hormonesWhat is the difference between neurotransmitters acting as neurotransmitters and hormones?difference between neurotransmitters and hormonesWhat allows the hypothalamus to detect a lack of thyroid hormones?Hormonal terms Somatotrophin or somatotropin?What's the difference between the neuroendocrine system vs endocrine system?

1

$begingroup$

I've been reading my textbook and two terms have appeared that, after a bit of looking, I still can't seem to be able to distinguish. Here's what the textbook says (McGraw Hill Bio 12, 2011):

After receiving signals from various sensors in the body, the
hypothalamus secretes what are referred to as releasing hormones,
which often travel to the pituitary gland. The releasing hormones
stimulate the pituitary gland to secrete hormones that act on other
endocrine glands. Hormones that stimulate endocrine glands to release
other hormones are called tropic hormones. (pg. 394)

From the work I've done, it all seems to indicate that releasing hormones regulate the secretion of other hormones, and that tropic hormones target and stimulate other endocrine glands (to release hormones). And yet my textbook appears to use the terms separately later on as if they're related rather than identical (e.g.: "the pituitary gland is controlled by the hypothalamus via releasing hormones and it secretes tropic hormones" (pg. 396)). So are they identical? And if not, what distinguishes between them?

endocrinology

share|improve this question

asked 4 hours ago

KorvexiusKorvexius

425

$endgroup$

add a comment | 

1

$begingroup$

I've been reading my textbook and two terms have appeared that, after a bit of looking, I still can't seem to be able to distinguish. Here's what the textbook says (McGraw Hill Bio 12, 2011):

After receiving signals from various sensors in the body, the
hypothalamus secretes what are referred to as releasing hormones,
which often travel to the pituitary gland. The releasing hormones
stimulate the pituitary gland to secrete hormones that act on other
endocrine glands. Hormones that stimulate endocrine glands to release
other hormones are called tropic hormones. (pg. 394)

From the work I've done, it all seems to indicate that releasing hormones regulate the secretion of other hormones, and that tropic hormones target and stimulate other endocrine glands (to release hormones). And yet my textbook appears to use the terms separately later on as if they're related rather than identical (e.g.: "the pituitary gland is controlled by the hypothalamus via releasing hormones and it secretes tropic hormones" (pg. 396)). So are they identical? And if not, what distinguishes between them?

endocrinology

share|improve this question

asked 4 hours ago

KorvexiusKorvexius

425

$endgroup$

add a comment | 

$begingroup$

I've been reading my textbook and two terms have appeared that, after a bit of looking, I still can't seem to be able to distinguish. Here's what the textbook says (McGraw Hill Bio 12, 2011):

After receiving signals from various sensors in the body, the
hypothalamus secretes what are referred to as releasing hormones,
which often travel to the pituitary gland. The releasing hormones
stimulate the pituitary gland to secrete hormones that act on other
endocrine glands. Hormones that stimulate endocrine glands to release
other hormones are called tropic hormones. (pg. 394)

From the work I've done, it all seems to indicate that releasing hormones regulate the secretion of other hormones, and that tropic hormones target and stimulate other endocrine glands (to release hormones). And yet my textbook appears to use the terms separately later on as if they're related rather than identical (e.g.: "the pituitary gland is controlled by the hypothalamus via releasing hormones and it secretes tropic hormones" (pg. 396)). So are they identical? And if not, what distinguishes between them?

endocrinology

share|improve this question

asked 4 hours ago

KorvexiusKorvexius

425

$endgroup$

share|improve this question

asked 4 hours ago

KorvexiusKorvexius

425

share|improve this question

asked 4 hours ago

KorvexiusKorvexius

425

asked 4 hours ago

KorvexiusKorvexius

425

asked 4 hours ago

KorvexiusKorvexius

425

1 Answer
1

active

oldest

votes

2

$begingroup$

The releasing hormones could also be considered tropic hormones, and indeed they fit the definition as you noticed, but aren't usually named as such.

The special thing about the ones your textbook is specifically highlighting as releasing hormones is that they communicate from the hypothalamus to the pituitary through the hypophyseal portal system, vessels that travel directly from the hypothalamus to the anterior pituitary.

Therefore, they aren't really released into the broader circulation (they can get there, but they'd be in too low a concentration). They are easily identified in a list of hormone because they all share a naming convention where they are called "____-releasing hormone" and their primary function is to cause the pituitary to release whatever is in the "_____".

In terms of overall neuroendocrine function, the "releasing" hormones all cause release of tropic hormones, which in turn cause release of hormones that affect other tissues.

Therefore, the sequence is releasing -> tropic -> non-tropic. They could have been named something else, like "primary tropic" and "secondary tropic" but this terminology keeps them separate as "tropic hormones that cause release of other tropic hormones."

share|improve this answer

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

$endgroup$

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "375"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fbiology.stackexchange.com%2fquestions%2f82188%2fwhats-the-difference-between-releasing-hormones-and-tropic-hormones%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

2

$begingroup$

The releasing hormones could also be considered tropic hormones, and indeed they fit the definition as you noticed, but aren't usually named as such.

The special thing about the ones your textbook is specifically highlighting as releasing hormones is that they communicate from the hypothalamus to the pituitary through the hypophyseal portal system, vessels that travel directly from the hypothalamus to the anterior pituitary.

Therefore, they aren't really released into the broader circulation (they can get there, but they'd be in too low a concentration). They are easily identified in a list of hormone because they all share a naming convention where they are called "____-releasing hormone" and their primary function is to cause the pituitary to release whatever is in the "_____".

In terms of overall neuroendocrine function, the "releasing" hormones all cause release of tropic hormones, which in turn cause release of hormones that affect other tissues.

Therefore, the sequence is releasing -> tropic -> non-tropic. They could have been named something else, like "primary tropic" and "secondary tropic" but this terminology keeps them separate as "tropic hormones that cause release of other tropic hormones."

share|improve this answer

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

$endgroup$

add a comment | 

2

$begingroup$

The releasing hormones could also be considered tropic hormones, and indeed they fit the definition as you noticed, but aren't usually named as such.

The special thing about the ones your textbook is specifically highlighting as releasing hormones is that they communicate from the hypothalamus to the pituitary through the hypophyseal portal system, vessels that travel directly from the hypothalamus to the anterior pituitary.

Therefore, they aren't really released into the broader circulation (they can get there, but they'd be in too low a concentration). They are easily identified in a list of hormone because they all share a naming convention where they are called "____-releasing hormone" and their primary function is to cause the pituitary to release whatever is in the "_____".

In terms of overall neuroendocrine function, the "releasing" hormones all cause release of tropic hormones, which in turn cause release of hormones that affect other tissues.

Therefore, the sequence is releasing -> tropic -> non-tropic. They could have been named something else, like "primary tropic" and "secondary tropic" but this terminology keeps them separate as "tropic hormones that cause release of other tropic hormones."

share|improve this answer

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

$endgroup$

add a comment | 

$begingroup$

The releasing hormones could also be considered tropic hormones, and indeed they fit the definition as you noticed, but aren't usually named as such.

The special thing about the ones your textbook is specifically highlighting as releasing hormones is that they communicate from the hypothalamus to the pituitary through the hypophyseal portal system, vessels that travel directly from the hypothalamus to the anterior pituitary.

Therefore, they aren't really released into the broader circulation (they can get there, but they'd be in too low a concentration). They are easily identified in a list of hormone because they all share a naming convention where they are called "____-releasing hormone" and their primary function is to cause the pituitary to release whatever is in the "_____".

In terms of overall neuroendocrine function, the "releasing" hormones all cause release of tropic hormones, which in turn cause release of hormones that affect other tissues.

Therefore, the sequence is releasing -> tropic -> non-tropic. They could have been named something else, like "primary tropic" and "secondary tropic" but this terminology keeps them separate as "tropic hormones that cause release of other tropic hormones."

share|improve this answer

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

$endgroup$

share|improve this answer

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256

answered 3 hours ago

Bryan Krause♦Bryan Krause

19.4k23256