If an animal has been thryoidectomized what hormones would be missing from its blood?

1. What hormones will be missing in the rat that was Hypophysectomized?
2. What was the effect of TSH on the Thyroidectomized rat?
3. Why were ovariectomized rats used in this experiment How does the fact that the rats are ovariectomized explain their baseline T scores?
4. What effect did saline injections have on the control rat?
5. What was the effect of the propylthiouracil PTU on the Thyroidectomized rat?
6. Which hormones stimulates the pituitary gland to release ACTH?
7. How would Administration of propylthiouracil affect the metabolic rate of a Thyroidectomized rat?
8. Which hormones stimulates the breakdown of polymerized glucose?
9. How does administering PTU affect the body's ability to regulate?
10. What is the effect of thyroid stimulating hormone?
11. How is a Thyroidectomized rat treated?
12. Why did the metabolic rates differ between the normal rat and the surgically altered rat?
13. Why was saline injected into the control animals?
14. What effect did the administration of calcitonin injections have on the calcitonin treated rat What effect did it have on bone density?

What hormones will be missing in the rat that was Hypophysectomized?

If an animal has been hypophysectomized, what effect would you expect to see in the hormone levels in its body? TSH levels will be missing because the pituitary gland is removed, so decreased metabolic rate.

What was the effect of TSH on the Thyroidectomized rat?

The thyroidectomized rate had no thyroid gland for TSH to stimulate, so in this case TSH injections could not increase thyroid hormone production and thus could not increase metabolic rate. Q21. A goiter is an enlarged thyroid gland. The thyroidectomized rat does not have a thyroid gland to become enlarged.

Why were ovariectomized rats used in this experiment How does the fact that the rats are ovariectomized explain their baseline T scores?

Ovariectomized rats were used in this experiment to ensure control over the hormones in the rats. Without the ovaries, the rats were not able to produce estrogen, and therefore had low baseline T scores already, since estrogen stimulates bone growth and protects against osteoprosis.

What effect did saline injections have on the control rat?

The rats all had osteoporosis since estrogen loss weakens bone growth, which is why they had baseline T scores. What effect did the administration of saline injections have on the control rat? How well did the results compare with your prediction? When saline ejection were administered, no effect occured.

What was the effect of the propylthiouracil PTU on the Thyroidectomized rat?

It decreased BMR in normal and hypophysectomized rats because propylthiouracil blocks the attachment of iodine to tyrosine residues and interferes with the conversion of thyroxine to triiodothyronine.

Which hormones stimulates the pituitary gland to release ACTH?

Corticotropin-releasing hormone (CRH) is released from the hypothalamus, which stimulates the anterior pituitary to release adrenocorticotropic hormone (ACTH).

How would Administration of propylthiouracil affect the metabolic rate of a Thyroidectomized rat?

It prevents the thyroid hormone production and so would cause a decreased metabolic rate. 1. Propylthiouracil prevents thyroid hormone synthesis. ... Propylthiouracil has no effect in the thyroidectomized and hypophysectomized rats.

Which hormones stimulates the breakdown of polymerized glucose?

Glucagon is released by the pancreas in response to low blood glucose levels and stimulates the breakdown of glycogen into glucose, which can be used by the body. The body's basal metabolic rate is controlled by the thyroid hormones thyroxine (T₄) and triiodothyronine (T₃).

How does administering PTU affect the body's ability to regulate?

Recall how administering PTU affects the body's ability to regulate its metabolic rate. ... PTU inhibits thyroid hormone. This will increase the metabolic rate as evidenced by higher increased) oxygen c sumption from less shivering.

What is the effect of thyroid stimulating hormone?

TSH stimulates thyroid hormone secretion through enhancing iodide uptake, thyroglobulin synthesis, and thyroperoxidase activity. Additionally, TSH also increases blood flow to the thyroid gland and stimulates hypertrophy and hyperplasia of thyroid follicular cells to exert growth effects on the thyroid gland.[6]

How is a Thyroidectomized rat treated?

SUMMARY. Cold-exposed, thyroidectomized rats have been treated with the same daily substitution dose of thyroxine (6y–12y) as prevented vacuoles from arising in the anterior pituitary basophiles of likewise thyroidectomized rats kept at a temperature of -f 25°–+30° C.

Why did the metabolic rates differ between the normal rat and the surgically altered rat?

The metabolic rates differed between the normal rat and the surgically altered rats because the surgically altered rats could not produce specific hormones (t4 and TSH) since they no longer have either a thyroid or pituitary gland.

Why was saline injected into the control animals?

Additional measurement of locomotor activity in actometers is needed to check whether drugs used in experiments with elevated plus-maze alter locomotor activity. Injection of saline significantly shortened the latency of reaching one of the closed arms from the free end of an open arm.

What effect did the administration of calcitonin injections have on the calcitonin treated rat What effect did it have on bone density?

Calcitonin treatment caused a further increase in osteocalcin and P1NP in OVX rats. Calcitonin increases Wnt10b and bone formation but decreases bone resorption in ovariectomized osteoporotic rats.