The main difference between anterior and posterior pituitary gland is that
the action of the anterior pituitary gland is regulated through vessels connected to the hypothalamus
whereas the action of the posterior pituitary gland is regulated through nerves connected to the hypothalamus.
How is the anterior pituitary gland different from the posterior pituitary gland?
The anterior pituitary gland is
connected
to the brain by short blood vessels. The posterior pituitary gland is actually part of the brain and it secretes hormones directly into the bloodstream under the command of the brain.
Which is a difference between the anterior pituitary and the posterior pituitary quizlet?
Anterior pituitary is composed of endocrine tissue while the posterior pituitary is composed of
neural tissue
. Hormones produced by the posterior pituitary.
What is the main function of the posterior pituitary gland?
The primary function of the posterior pituitary is
the transmission of hormones originating from neurons located in hypothalamic brain regions
such as the supraoptic nucleus (SON) and paraventricular nucleus (PVN) for secretion directly into peripheral circulation.
Why do the anterior and posterior pituitary look different?
Pituitary Gland. The anterior (a) and posterior (p) pituitary glands
look very different from each other
, so identifying them should not be too difficult. There are more cells in the anterior pituitary, so it usually stains darker. … Some of the cells have more granules in their cytoplasm than others and look darker.
What happens if the posterior pituitary is removed?
According to The Pituitary Foundation, without it,
the body wouldn’t reproduce
, wouldn’t grow properly and many other bodily functions just wouldn’t function.
Does the posterior pituitary produce hormones?
The posterior lobe produces two hormones,
vasopressin and oxytocin
. These hormones are released when the hypothalamus sends messages to the pituitary gland through nerve cells. Vasopressin is also known as antidiuretic hormone (ADH).
What hormones are released from the anterior pituitary?
The anterior pituitary gland produces six major hormones: (1)
prolactin (PRL)
, (2) growth hormone (GH), (3) adrenocorticotropic hormone (ACTH), (4) luteinizing hormone (LH), (5) follicle-stimulating hormone (FSH), and (6) thyroid-stimulating hormone (TSH) (Table 401e-1).
What gland produces oxytocin and ADH?
| Endocrine gland/ source of hormone Hormone Target organ or tissue | Anterior pituitary (adenohypophysis) TSH (thyroid stimulating hormone) Thyroid gland | Prolactin Mammary gland | Posterior pituitary (neurohypophysis) ADH (antidiuretic hormone) Kidney tubules Smooth muscle in arterioles | Oxytocin Uterine smooth muscle Mammary gland |
|---|
What is the functional relationship between the hypothalamus and the posterior pituitary quizlet?
No functional relationship exists between the hypothalamus
and the posterior pituitary. 2. Hypothalamus produces releasing hormones that stimulate hormone secretion by the posterior pituitary.
What diseases are caused by disorders of the posterior pituitary gland?
- Acromegaly.
- Craniopharyngioma.
- Cushing Disease / Cushing Syndrome.
- Growth Hormone Deficiency.
- Nonfunctioning Pituitary Adenoma.
- Prolactinoma.
- Rathke’s Cleft Cyst.
What does a pituitary tumor headache feel like?
Headache pain in these situations is typically characterized by
steady, bifrontal or unilateral frontal aching
(ipsilateral to tumor). In some instances, pain is localized in the midface (either because of involvement of the second division of the trigeminal or secondary to sinusitis).
How do you know if you have pituitary problems?
Signs and symptoms of pressure from a pituitary tumor may include:
Headache
.
Vision loss, particularly loss of peripheral vision
.
What is another term for the posterior lobe of the pituitary?
In most species the pituitary gland is divided into three lobes: the anterior lobe, the intermediate lobe, and the posterior lobe (also called
the neurohypophysis or pars nervosa
).
Is the posterior pituitary a true endocrine gland?
The posterior pituitary (or neurohypophysis) comprises the posterior lobe of the pituitary gland and is
part of the endocrine system
.
Can a pituitary tumor change your personality?
Personality changes are also
common
when a pituitary tumour causes the pituitary gland to over- or under-produce hormones. This can affect your emotions and cause changes in your sex drive. Larger tumours can have a greater effect on personality, as they generally affect a greater area of the brain.
