does always Axons go to posterior, blood vessels go to anterior pituitary gland
No, not always.
Axons can go to both the posterior and anterior pituitary gland. The posterior pituitary gland receives axons containing hormones produced in the hypothalamus, such as vasopressin and oxytocin. These hormones are released directly into the bloodstream from the axon endings in the posterior pituitary.
On the other hand, blood vessels primarily supply the anterior pituitary gland. The hypothalamus releases different hormones into the bloodstream, which then travel through blood vessels to the anterior pituitary gland. The hormones secreted by the anterior pituitary regulate various functions in the body.
In the human brain, axons do not always go exclusively to the posterior pituitary gland, and blood vessels do not always go exclusively to the anterior pituitary gland. The pituitary gland is divided into two parts: the anterior pituitary and the posterior pituitary.
Axons that originate from the hypothalamus extend down through the pituitary stalk and terminate in the posterior pituitary gland. These axons carry hormones such as oxytocin and antidiuretic hormone (ADH), which are produced in the hypothalamus and are released into the bloodstream from the posterior pituitary.
On the other hand, the anterior pituitary gland receives blood supply from a complex network of blood vessels known as the hypophyseal portal system. This system delivers hormones synthesized by the hypothalamus to the anterior pituitary for secretion into the bloodstream. These hormones act on various target organs throughout the body.
So, to summarize, axons from the hypothalamus terminate in the posterior pituitary gland, and blood vessels supply the anterior pituitary gland.
No, axons do not always go to the posterior pituitary gland, and blood vessels do not always go to the anterior pituitary gland. Let me explain how this works.
The pituitary gland is a small organ located at the base of the brain, and it is divided into two main parts: the anterior pituitary gland and the posterior pituitary gland. Each part has different functions and receives different inputs.
The posterior pituitary gland is responsible for storing and releasing hormones produced by the hypothalamus, another part of the brain. The hypothalamus produces hormones that travel through specialized neurons called axons. These axons extend from the hypothalamus to the posterior pituitary gland, where the hormones are released into the bloodstream. So, it is true that axons connect the hypothalamus to the posterior pituitary gland.
On the other hand, the anterior pituitary gland does not receive axons directly from the hypothalamus. Instead, it is connected to the hypothalamus through a complex system of blood vessels called the hypothalamic-pituitary portal system. The hypothalamus releases hormones into this system, which then travel through the blood vessels to the anterior pituitary gland. Once in the anterior pituitary gland, these hormones stimulate or inhibit the release of other hormones.
In summary, axons from the hypothalamus connect to the posterior pituitary gland, while blood vessels (via the hypothalamic-pituitary portal system) connect the hypothalamus to the anterior pituitary gland.