What structure filters the blood to regulate its composition?
A) urethra
B) bladder
C) liver
D) ureter
E) kidneys
Answer: E) kidneys
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A patient is in the emergency room for a severe anxiety attack. Their doctor administers a dose of potassium to control their elevated heart rate. Why would potassium potentially be a treatment for the cardiovascular effects of an anxiety attack?
A. Excess potassium ion concentration causes decreased rate and decreased force of contraction. B. Excess potassium ion concentration directly signals the sympathetic nervous system to cease signaling to increase heart rate C. Excess potassium ion concentration causes decreased rate and increased force of contraction. D. Excess potassium ion concentration signals the parasympathetic nervous system directly to lower heart rate
The major body parts derived from endoderm are the epithelial lining of
A) all of the above. B) the digestive tract. C) the urinary bladder. D) the respiratory tract.
The gradual increase in estrogen secretion during the follicular phase is the result of
A. declining FSH levels. B. granulosa cells converting androgens to estrogen. C. positive feedback on the anterior pituitary. D. an LH surge. E. luteal development.
Intentionally introducing new characteristics or attributes into an organism is known as genetic engineering.?
Indicate whether the statement is true or false