- normal rat had the fastest basal metabolic rate because it was ot missing its pituitary gland or its thyroid gland. ...
- normal rat has highest bmr because it has glands required to stimulate and regulate the release of the thyroid hormones.
Why does the normal rat have the highest BMR?
The normal rat has the highest BMR because it has the glands required to stimulate and regulate the release of thyroid hormones. Click to see full answer. Similarly, what was the effect of thyroxine injections on the normal rat's BMR?
Which animal has the fastest basal metabolic rate?
The normal rat had the fastest basal metabolic rate because it was not missing its pituitary gland or its thyroid gland. The normal rat has the highest BMR because it has the glands required to stimulate and regulate the release of thyroid hormones.
What is basal metabolic rate (BMR)?
Basal metabolic rate (bmr) is the rate of energy expenditure per unit time by endothermic animals at rest it is reported in energy units per unit time ranging from. What was the effect of thyroxine injections on the thyroidectomized rat's bmr how does the bmr in this case compare with the normal rat's bmr was the.
What was the effect of hypophysectomized rats on the BMR?
The Hypophysectomized rats also had high BMR after injections making the rat hyperthyroid. The BMR was a little higher in the rat with no pituitary gland with thyroxine than that of the normal rat. The thyroxine in the syringe was too small of a dose. 1 What was the effect of thyroid-stimulating hormone (TSH) injections on the normal rat's BMR?
How does the BMR in this case compare with the normal rat's BMR Why was this effect observed?
How does the BMR in this case compare with the normal rat's BMR? Why was this effect observed? There was no effect on the thyroidectomized rat's BMR with the injection of TSH because there was no thyroid gland to stimulate.
What was the effect of propylthiouracil on the normal rat BMR Why did this rat develop a palpable goiter?
PTU lowered the normal rat's metabolic rate. Why? Because PTU inhibited the production of thyroid hormone, and less thyroid hormone means a lower metabolic rate.
Why were ovariectomized rats used in this experiment How does the fact that the rats are?
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.
Why did the metabolic rates differ between the rats in Physioex 4?
Why did the metabolic rates differ between the normal rat and surgically altered rats? THey differed because the surgically altered rats could not produce specific hormones (t4 and TSH) since they no loner have either a thyroid or pituitary gland.
Which rat had the fastest basal metabolic rate quizlet?
Terms in this set (18)normal rat had the fastest basal metabolic rate because it was ot missing its pituitary gland or its thyroid gland. ... normal rat has highest bmr because it has glands required to stimulate and regulate the release of the thyroid hormones.More items...
Which of the rats developed a goiter after injection with propylthiouracil?
The Hypox rat became hyperthyroidic and developed a goiter, which is similar to the normal rat. The dose was too large. What was the effect of propylthiouracil (PTU) injections on the normal rat's BMR?
How did the metabolic rates of the three rats differ?
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. You just studied 13 terms!
Which of the rats did not develop a goiter after injection with TSH?
The normal rat will become hyperthyroidic but will not develop a goiter. What do you think will happen after you inject TSH into the three rats? The normal rat will become hyperthyroidic and develop a goiter.
Why did the normal rat develop a palpable goiter?
Why did the normal rat develop a palpable goiter with the TSH injection? The TSH receptors on the thyroid gland were excessively stimulated.
Which one is used to measure the metabolic rate?
An organisms metabolic rate can be measured using several different pieces of apparatus including respirometers, oxygen probes, carbon dioxide probes and calorimeters.
Why did the metabolic rate differ?
Here's why: One of the variables that affect your resting metabolic rate is the amount of lean muscle you have. At any given weight, the more muscle on your body, and the less fat, the higher your metabolic rate. That's because muscle uses a lot more energy than fat while at rest (see the graphic in section one).Sep 4, 2018
Which of the following improved the vertebral bone density of the rats?
Parathyroid hormone (1-34) increases vertebral bone mass, compressive strength, and quality in old rats.
What is BMR in biology?
BMR ( basal metabolic rate ) Basal metabolic rate (BMR), and the closely related resting metabolic rate (RMR), is the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning that the digestive system is inactive, which requires about twelve hours of fasting in humans). The release of energy in this state is sufficient only for the functioning of the vital organs, the heart, lungs and kidneys and the rest of the nervous system, intestine,...
Does the resting metabolic rate vary with age?
Resting metabolic rate can vary with age independently from body mass changes in the Colorado potato beetle, Leptinotarsa decemlineata. Abstract A study was done by Saija Pironine, leena Lindstrom, and Anne Lyytinen in the Journal of Insect Physiology, to investigate the age dependence of resting metabolic rate in Colorado potato beetle (Leptinotarsadecemlineata) from adult emergence until age 10 days. In their hypothesis they expected to see a bell shaped pattern in metabolic rate with adult age...
