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.
Q. What is the major structural difference between the posterior and anterior pituitary?
The release of hormones by the posterior pituitary gland is regulated by the axonal projections extending from the hypothalamus. Therefore, the main difference between anterior and posterior pituitary gland is the hormones released by the each gland and the regulation of hormone release in each gland.
Table of Contents
- Q. What is the major structural difference between the posterior and anterior pituitary?
- Q. Which is a difference between the anterior pituitary and the posterior pituitary quizlet?
- Q. What are the differences between the lobes of the pituitary gland?
- Q. What happens if the posterior pituitary is removed?
- Q. What hormones are released from the posterior lobe of the pituitary?
- Q. What is another term for the posterior lobe of the pituitary?
- Q. Why is the posterior lobe of the pituitary gland not a true endocrine gland?
- Q. Which of the following is not part of the posterior lobe of the pituitary?
- Q. What is the target structure of posterior pituitary gland?
- Q. Why posterior pituitary is called Neurohypophysis?
- Q. Which of the following hormones is secreted by the posterior lobe of the pituitary gland quizlet?
- Q. Which of these hormones is made by the posterior pituitary quizlet?
- Q. What is the function of the posterior pituitary gland quizlet?
- Q. What are the two hormones secreted by the posterior pituitary gland quizlet?
- Q. What hormone does the posterior pituitary gland store and release quizlet?
Q. Which is a difference between the anterior pituitary and the posterior pituitary quizlet?
The anterior pituitary arises from a pouch that grows upward from the embryonic pharynx, while the posterior pituitary arises as a bud growing downward from the brain.
Q. What are the differences between the lobes of the pituitary gland?
The pituitary has two lobes, the anterior and the posterior lobe. Each of the two lobes of the pituitary gland contains different types of cells and produces different types of hormones. The anterior lobe makes up about 80% of the pituitary gland.
Q. What happens if the posterior pituitary is removed?
The gland may be destroyed during surgery, leaving the endocrine system without regulation. If this happens, a person will require hormone replacement therapy.
Q. What hormones are released from the posterior lobe of the pituitary?
The posterior lobe of the pituitary produces only two hormones:
- Vasopressin.
- Oxytocin.
Q. 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).
Q. Why is the posterior lobe of the pituitary gland not a true endocrine gland?
Oxytocin and vasopressin are produced by the hypothalamus but stored and are released into the bloodstream through the posterior pituitary. That is the reason why it is not a true endocrine gland.
Q. Which of the following is not part of the posterior lobe of the pituitary?
Which of the following is not part of the posterior lobe of the pituitary? pituitary gland.
Q. What is the target structure of posterior pituitary gland?
| Endocrine gland/ source of hormone | Hormone | Target organ or tissue |
|---|---|---|
| Anterior pituitary (adenohypophysis) | Prolactin | Mammary gland |
| Posterior pituitary (neurohypophysis) | ADH (antidiuretic hormone) | Kidney tubules Smooth muscle in arterioles |
| Oxytocin | Uterine smooth muscle Mammary gland | |
| Pineal gland | Melatonin | Various tissues |
Q. Why posterior pituitary is called Neurohypophysis?
The posterior pituitary (or neurohypophysis) is the posterior lobe of the pituitary gland which is part of the endocrine system. The posterior pituitary is not glandular as is the anterior pituitary.
Q. Which of the following hormones is secreted by the posterior lobe of the pituitary gland quizlet?
The posterior pituitary secreted antidiuretic hormone (ADH) (vasopressin), which stimulates water loss, and oxytocin, which control myoepithelial cell contraction in the mammary glands and smooth muscle contraction in the uterus.
Q. Which of these hormones is made by the posterior pituitary quizlet?
It also produces antidiuretic hormone (ADH) and oxytocin. These two hormones are stored in the posterior pituitary gland.
Q. What is the function of the posterior pituitary gland quizlet?
Endocrine System – Posterior Pituitary Gland. Temporarily stores & then releases both hormones into the bloodstream. It is a product of the hypothalamus.
Q. What are the two hormones secreted by the posterior pituitary gland quizlet?
The posterior pituitary stores two hormones, antidiuretic hormone and oxytocin, which are produced in the hypothalamus.
Q. What hormone does the posterior pituitary gland store and release quizlet?
Posterior pituitary stores and releases: antidiuretic hormone (ADH) and oxytocin (OT).
