Name Check Your Understanding Critical Thinking and Application Questions REVIEW
ID: 3523464 • Letter: N
Question
Name Check Your Understanding Critical Thinking and Application Questions REVIEW 1 How does the way in which the communicates with the anterior and posterior pituitary glands does this reflect the functional differences of the anterior and posterior pitutary parathyroid gland often result in secretion of excess parathyroid hormone. Considering the hormone, predict the effects of such a tumor. How would the effects change if the tumor 2 Tumors of the function of this secreted calcitonin instead? 3 A pheochromogytoma (fee-uh-kroh-muh-sy-TOH-muh) is a tumor of the adrenal medulla that secretes epineph and norepinephrine. Predict the symptoms that you might see from this condition.Explanation / Answer
Answer 1)
The hypothalamus communicates with anterior pituitary gland via special blood portal system (Adenohypophysis) and coomunicates with posteior pituitary direcectly by neurons ( Neurohypophysis).
- Hypothalamus acts on anterior pituitary to produce and release hormones whereas hypothalamus secrets hormones that are stored in posterior pituitary. This is the main functional difference.
Answer 2) Tumor of parathyroid gland leads to ecxess parathyroid hormone secretions. The effects that can be seen are Osteoporosis , Kidney stone , Bone and joint deformity , weakness , depression.
If there are high calcitonin secretions, the effects would be Vomting , loss of appetite , fatigue and constipation.
Answer 3) Symptoms of pheochromocytoma
All the symptoms include flight and fight response same as in stress conditions.
Answer 4) Symptoms of diabetes mellitus
There will be lack of insuline secretion and blood glucose levels will rise. In such cases, the symptoms exhibited are :
Answer 5) Glucagonoma heavily rises blood glucose levels.
The symptoms include
Answer 6) In hyperthyroidism, when there is excess T3 and T4 levels in blood, the negative feedback mechanism will trigger hypothalamus to inhibit Thyrotropin releasing hormone (TRH).
Eventually it will lead to fall in TSH secretions from anterior pituitary.
Thus, there will be low TSH levels in hyperthyroidism.
Answer 7) Syndrome of inappropriate ADH secretion is characterised by a condition where body retains excess amount of water due to high ADH levels.
Symptoms include :
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