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The hypothalamic-pituitary-gonadal axis (also HPG axis) is referring to the effects of the hypothalamus, pituitary gland, and gonads as if these individual endocrine glands were a single entity as a whole. Because these glands often behave in cooperation, physiologists and endocrinologists find it convenient and descriptive to speak of them as a single system.
The hypothalamic-pituitary-gonadal axis is a critical part in the development and regulation of a number of the body's systems, such as the reproductive, and immune systems. Fluctuations in the hormones cause changes in the hormones produced by each gland and have various widespread and local effects on the body. This axis controls development, reproduction, and aging in animals. The hypothalamus produces gonadotropin-releasing hormone (GnRH). The anterior portion of the pituitary gland produces luteinizing hormone (LH) and follicle-stimulating hormone (FSH), and the gonads produce estrogen and testosterone.
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Which of the choices below is not a part of the hypothalamic-pituitary-gonadal axis?
posterior pituitary gland
What ias the difference between gonadal hormone and gonadotropin?
Gonadal hormones are those hormones that are actually released from the gonads (ex. estrogen, testosterone). Gonadotropins are hormones that CAUSE the release of gonadal hormones, gonadotropins are released from the anterior pituitary gland(tropin means "releasing" so gonadotropin is a gonad hormone releasing hormone) an example of this would be FSH-- follicle stimulating hormone.
How do youm hodjbyt?
you jest gonadal your hoping
Are gonads drained by hepatic portal system?
No. The gonads are drained by the gonadal veins. The left gonadal vein empties into the left renal vein (and further into the inferior vena cava) whereas the right gonadal vein empties directly into the inferior vena cava.
How can you prevent Gonadal failure?
Smoke crystal meth
The ovaries receive blood from which arteries?
gonadal arteries
What is the most important dereminant of the onset of pubescence?
The most important determinant of the onset of puberty is the activation of the hypothalamic-pituitary-gonadal (HPG) axis. This hormonal axis becomes active due to changes in the levels of hormones such as GnRH, LH, and FSH, which in turn trigger the physical changes associated with puberty. Genes, nutrition, and environmental factors can also influence the timing of puberty onset.
Vein that drains the ovaries or testes?
In either case there is a bed of veins called the pampiniform plexus which directly drain the organs blood supply. The plexus then drains into discreet veins; from the ovaries, the ovarian veins and from the testes, the testicular veins. These discreet veins connect directly to the inferior vena cava.
Which gonadal vein empties into the renal vein on the same side of the body?
left
What are the only gonadal adrenocortical hormones?
The only gonadal adrenocortical hormone is dehydroepiandrosterone (DHEA). DHEA is produced in both the adrenal glands and the gonads, and serves as a precursor to other sex hormones like testosterone and estrogen.
WHAT type of gonadal shielding could be used for a patient having an exam requiring a sterile field?
Shadow Shields
At what point does a lumen form in the testicular gonadal cords?
Lumens form in the testicular gonadal cords during differentiation of Sertoli cells, which help to create the seminiferous tubules where sperm production takes place. This process typically occurs around mid-gestation in male development.
