Answer:
The answer to the statement: At rest, most of the body´s blood supply resides in the pulmonary loop, would be, B: False.
Explanation:
The circulatory system never stops working. Pumping of blood, transportation of oxygen, nutrients and water to and from tissues is a process that does not end, even during sleep. The only moment when this process does not happen, is in death. However, a good question is, where does the blood go, or stay, when the body is not active, like for example, during sleep. And the answer is that most of it will rest on the systemic veins and venules and will slowly circulate back to the heart, but at a much lower rate than when the body activates itself. However, what is not true is that blood will reside mostly in the pulmonary loop, because this loop does not have the capacity to store that much blood.
Answer:
c. The abnormality is in the thyroid gland itself.
Explanation:
Primary hypothyroidism arises from a pathology in the thyroid gland itself and occurs when the thyroid gland is not able to perform one of its many physiology. Secondary hypothyroidism starts at the level of the pituitary gland and results from under secretion of TSH. TSH is needed to trigger the release of the T3 and T4 stored in the thyroid gland. Tertiary hypothyroidism is caused by a decrease level of the TRH from the hypothalamus. This reduced level, in turn, reduces TSH and thyroid hormone levels in the blood, hence in the body and the patient suffer the symptoms.
