Variations in respiratory rate is a symptom of
A. sinus arrhythmia.
B. SA node block.
C. paroxysmal atrial tachycardia
D. ventricular tachycardia.
Answer: A
Anatomy & Physiology
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Generally, the third vessel to branch off the abdominal descending aorta is the
A. celiac artery. B. IMA. C. right renal artery. D. left renal artery. E. SMA.
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Describe a feedback system and list its general components
What will be an ideal response?
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Describe how receptive field size influences receptor acuity
What will be an ideal response?
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What mechanisms are responsible for producing concentrated urine?
a. the juxtamedullary nephrons become active. b. the counter-current mechanism pulls out much water. c. vasopressin causes facultative water reabsorption in distal tubule. d. both (a) and (b) above. e. all of these answers.
Anatomy & Physiology