Choose from the following key to identify the hormones described. Key: a. aldosterone b. antidiuretic hormone c. growth hormone d. luteinizing hormone e. oxytocin f. prolactin g. T₄ and T₃ h. TSH ______ (1) important anabolic hormone; many of its effects mediated by IGFs ______ (2) cause the kidneys to conserve water and/or salt (two choices) ______ (3) stimulates milk production ______ (4) tropic hormone that stimulates the gonads to secrete sex hormones ______ (5) increases uterine contractions during birth ______ (6) major metabolic hormone(s) of the body ______ (7) causes reabsorption of sodium ions by the kidneys ______ (8) tropic hormone that stimulates the thyroid gland to secrete thyroid hormone ______ (9) secreted by the posterior pituitary (two choices) ______(10) the only steroid hormone in the list

Video transcript

Welcome back, everyone. Let's look at our next problem. It says match the hormones to their correct functions. I'm going to read out the eight hormones we're given and then we have eight different functions that will talk our way through. So that's, it's going to be a one for one match. There won't be any leftover. So let's have the hormones in our head and then we'll go on to evaluate each function one by one. A growth hormone, B, follicle stimulating hormone, C prolactin D, vasopressin e thyroid stimulating hormone f thyroxine G aldosterone H cortisol. So our number one function is stress response and stress response is going to be choice H cortisol. And then I'm gonna cross off letter H in my hormones that can help if I'm on a test, I'm eliminating ones I've already done. And cortisol, we often think of adrenaline. First. Cortisol comes after the release of adrenaline and kind of helps to sustain that alert. So you're in that fight or flight response and co is also helps to sustain that state of alertness. So it continues the alert and it releases glucose throughout the body to give that energy. The energy source for the body to do whatever it needs to do, to deal with the stressful situation that's going on. Now, let's move on to number two stimulates water reabsorption in the kidneys by aquaporin too. Well, we actually have two hormones that are involved in water reabsorption in the kidneys. And that is D vasopressin and G aldosterone. So how do we keep the two of them straight? Well, I'm gonna go ahead and look for the other description here at this point so that I can see to distinguish between them. So we just read a number two. And when I glance over my other functions, I see that number three says stimulates reabsorption of sodium N A plus and water by the kidneys. So two different methods of watery absorption and what we should keep straight is that vasopressin stimulates the water reabsorption by aquaporin two. So it makes the kidney cells more permeable to water. So that's how it acts to stimulate water re absorption. So D vasopressin is going to be our matching hormone for number two description Aldo which is G is going to go for number three stimulates reabsorption of sodium ions and water by the kidneys and it acts by making the cell walls more making the cell membranes, excuse me of the kidney cells more permeable to sodium that will cause water reabsorption by creating osmotic pressure. And another distinction between the two of them is that vasopressin is synthesized by the hypothalamus and secreted by the pituitary gland. Whereas aldosterone is synthesized and secreted by the adrenal cortex. So, just another difference between the two of them, even though they have similar functions and both are released when blood pressure is low. Now, let's move on to number four, it says regulate the metabolic rate of the body. Oh I forgot to cross off a, let me do that. Ok. So now we're moving on to regulate the metabolic rate of the body. And we think about the metabolic rate. We want to think about thyroid that's involved in that. And we have two choices of hormones involving the thyroid. We have e the thyroid stimulating hormone or f thyroxine. Well, in this case, our description says regulates the metabolic rate. That's going to be the actual hormone released by the thyroid, which is f by roxine, otherwise known as T four. Some of that gets converted into T three, its active form. The thyroid stimulating hormone is what gets released by the pituitary that causes the thyroid to release thyroxine. So we'll keep an eye out for that because that will probably be coming up later on. Number five says it stimulates the growth of nearly all tissues of the body. Well, conveniently we have choice a growth hormone. So that's a pretty straightforward one to match with its description, growth hormone stimulates tissue growth. Number six, stimulates follicular growth and ovulation. Well, again, here's another one where we have a key in the very name. Uh Choice B was follicle stimulating hormone and follicle stimulating hormone does indeed stimulate follicular growth as well as ovulation. So B follicle stimulating hormone will be our choice for number six. Now we move on to choice seven or function seven stimulates milk production in females. Well, that's going to be choice C prolactin and you have that root lact in there like lactate to help you remember that. And then finally, number eight, stimulate the production of thyroid hormones. Well, we talked about that when we had our choice for thyroxine, this will be choice e thyroid stimulating hormone. And again, right in the name stimulates the thyroid to produce the thyroid hormones. T four and T three. So again, our matches here really quickly. Number one is H number two is D three is G four, is F five, is A six, is B seven is C and eight is E see you in the next video.