Which hormone prompts increased anxiety, vigilance, and arousal during a stress response?
Only the release of norepinephrine promotes arousal, increased vigilance, increased anxiety, and other protective emotional responses.
Idiopathic thrombocytopenic purpura (ITP) is an autoimmune process involving antibodies attacking which type of cells?
ITP is a disorder of platelet consumption. This selection is the only option that correctly identifies which type of cell is attacked by ITP.
When renin is released, it is capable of which action?
Formation of angiotensin I
Formation of angiotensin I
When renin is released, it cleaves an α-globulin (angiotensinogen produced by liver hepatocytes) in the plasma to form angiotensin I.
Which of the following are formed elements of the blood that are not cells but are disk-shaped cytoplasmic fragments essential for blood clotting?
Platelets (thrombocytes) are not true cells but are disk-shaped cytoplasmic fragments that are essential for blood coagulation and control of bleeding. This description is not accurate for any of the other options.
In a full-term infant, the normal erythrocyte life span is _____ days, whereas the adult erythrocyte life span is _____ days.
60 to 80; 120
In full-term infants, normal erythrocyte life span is 60 to 80 days; in premature infants it may be as short as 20 to 30 days; and in children and adolescents, it is 120 days, the same as that in adults.
Graves disease is a result of:
Autoantibodies binding to thyroid-stimulating hormone (TSH)-receptor sites
In the hyperthyroidism (excessive thyroid activity) of Graves disease, autoantibody binds to and activates receptors for TSH (a pituitary hormone that controls the production of the hormone thyroxine by the thyroid). The other options do not accurately describe the cause of Graves disease.
What is the most commonly reported symptom of cancer treatment?
Fatigue is the most frequently reported symptom of cancer and cancer treatment. Although patients report the other options, they are not as frequently experienced as fatigue.
In which structure does B lymphocytes mature and undergo changes that commit them to becoming B cells?
B lymphocytes mature and become B cells in specialized (primary) lymphoid organs—the thymus gland for T cells and the bone marrow for B cells. Neither regional lymph nodes nor the spleen are involved in changing B lymphocytes into B cells.
Chvostek and Trousseau signs indicate which electrolyte imbalance?
Two clinical signs of hypocalcemia are the Chvostek sign and Trousseau sign. These clinical signs are not indicative of any of the other options.
On average, what percent of cardiac output do the kidneys receive?
- This solution has not purchased yet.
- Submitted On 15 Feb, 2020 12:44:23