Showing posts with label Hormones/Endocrine. Show all posts
Showing posts with label Hormones/Endocrine. Show all posts

Monday, April 18, 2011

Objective 12: Hormones and Functions of the Hypothalamus-Pituitary Complex

How I remember what it does- posterior kind of sounds like postage and the  posterior pituitary gland is used for storage. This is just a quirky way that i remember what the posterior pituitary gland's function is.

The anterior pituitary gland has about 6 different hormones:
Growth Hormone-too much of this hormone can cause gigantism in children and adults, on the flip side too little of this hormone can cause dwarfism in children. It effects the liver, muscles, bones, cartilage, and other different tissues.
Thyroid Stimulating Hormones- too little in the body can cause hypothyroidism, in adults extreme hypothyrpoidism is called cretinism and in adults it is called myxedema. Too much of this hormone can cause Hyperthyroidism.
Adrenocorticotropic Hormone- its job is to signal the adrenal cortex to release glucocorticoids and androgens. It is very rare to not have enough of this hormone, however having too much can lead to Cushing's disease. 
Follicle-Stimulating Hormone- it's job is to tell the ovaries and testies to start producing estrogen and sperm. Unfortunately if we dont have enough of this hormone we will be unable to have children, but having too isn't gonna be a bad.
Luteinizing Hormone-  also helps with the production of estrogen in females, but also with  triggers ovulation in females as well, in male it tells the testies to start making progesterone and testosterone. It effects are the same as the above, too much is a good thing but too little can be devestating for some.
Prolactin-tells the secretory tissue of the breast to start lactation, an insuficiency can cause problems in nursing women, too much cause too much milk production (galactorrhea) and is "impotence in males".

 The Posterior Pituitary Gland has about 2 hormones:
Oxytocin- tells the uterus to contract, starts off the labor contractions, and starts off the spill of milk in the breast. The effect of having too much or too little is unknown,
Antidiuretic Hormone- tells kidney when to reabsorb good ole H2O, too little can cause deabetes insipidus, too much can cause "Syndrome of Inappropriate ADH secretion"

Saturday, April 16, 2011

Objective 14-Sexy Pancreas

 As we were dissecting our cat, we had to locate various organs. We found our pancreas and all I can remember about it was what Mike said, "wow, that's a sexy pancreas." Then several students in the class came to see our "sexy" pancreas. All because of what Mike said is how I have been able to remember what the pancreas looks like. I also learned from the Physio ex. portion of the lab book what the pancreas does. It produces insulin. I also learned from bouncing off of Valerie the difference between type 1 diabetes and type 2 diabetes. This is our saying to help us remember the difference, "for one thing you ain't got none, and for 2 you just don't get it". Because in type 1 diabetes your pancreas does not produce insulin, and in type 2 diabetes your pancreas makes the insulin but your cells don't respond to it.

The Endocrine System & It's Hormones

Objective 10: Different Classes of Hormones
Objective 13 & 14: Gonadal Hormones  and Their Functions;  Location, Histology and Hormonesof the: Thyroid, Parathyroid Glands, Ovaries and Testes, Pineal and Adrenal Glands.
Location of endocrine organs in the human body
Thyroid Gland: found in the throat, is the bow tie on my mascarade face. It's job is to produce thyroid hormone and calcitonin.  Calcitonin's job is to  lower calcium levels in the blood. Thyroid hormone has many different effects on the body. Here is a chart from my book that I used to study by to know its different effects:
Major Effects of Thyroid Hormone

Thyroid @m 400x

Thyroid Gland @ 400x

Thyroid Gland

Thyroid Gland @ 40x
Parathyroid Glands- four little yellow dots on the back of the bow tie (thyroid). Their job is to produce Parathyroid Hormone (PTH). PTH is like the cheif of the calcium control in the blood. If too much calcium is in the blood  it will stop being produced but if there is too little calciun in th eblood then it will go back to work. it's important in our homestactic balance because it  plays a role in our nerve impulses, muscle comtractions, and how we clot our blood. It mainly effects our kidneys,intestine and our bones. which makes sence considering how we need calcium to make our bone grow.

Parathyroid Gland @ 40x

Parathyroid Gland @ 40x

Parathyroid Gland @ 400x

Parathyroid Gland @ 400x

Parathyroid Gland

Stressed??? yes me tooo!!!!
Well we are blessed to have our adrenal gland. I think mine is over used. Our adrenal gland is what helps us deal with stress. Our adrenal glands are found on top of our kidneys. They look like little pyramids. it has two parts which funcion as two separate organs. Here is a chart from my book that I used as a study guide that describes their different hormones and functions:










 
Pine cones...... Where??????
In our brain. Our pineal gland is shaped like a pine cone and hangs from the deincephalon in our brains. Experts are still uncertain exactly what this glands function actually is. It's only major function that has been found is that it secrtetes melatonin.

Time to Get Sexy With Our Hormones........
The Gonads: found in both men a women- produce the same hormones as the adrenal cortical but their amount is different.

In women- the ovaries produce estrogen and progesterone. They are found in the abdominal cavity.

Pic of Ovaries from the book Allen let me borrow. 

Ovaries from our Cat
 Testes: found in males, produce testosterone.

Picture from Allens book of the Testes

Testes of Momma's Cat