Which of the following will trigger the renin-angiotensin-aldosterone system (RAAS) into action?
A) high levels of sodium ions in the filtrate B) an increase in systemic blood pressure
C) parasympathetic nervous system stimulation D) low blood pressure
Answer: D
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What feature of your ear accounts for its ability to regain its shape after it has been deformed or compressed?
A. The elastic fibers present in the ear's cartilage B. The elastic fibers present in the ear's muscles C. The ear's built-in memory based upon its overall size and shape D. The abundance of reticular fibers forming a dense meshwork E. The elastic fibers in the ear's skin that contract after being stretched
The two purine nitrogen bases are adenine and guanine
a. True b. False Indicate whether the statement is true or false
When the neuron membrane becomes less negative than the resting membrane potential it is said to be _____.
Fill in the blank(s) with the appropriate word(s).
Resistance to blood flow is greatest in ________.
A. capillaries B. arteries C. arterioles D. veins E. venules