Feeling a structure, like a swollen lymph node, with the hands is called ________.
Fill in the blank(s) with the appropriate word(s).
palpation
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Why do people who have a heart attack often experience pain radiating along the left shoulder and arm?
A. Signals from nociceptors in the heart diverge and stimulate pain sensations in a large region. B. Signals from the cardiac and shoulder region converge and follow the same pathway to the cortex. C. Nociceptors from the cardiac and shoulder regions all send afferent signals through the phrenic nerve. D. Nociceptors from the cardiac and shoulder regions all send afferent signals through the vagus nerve. E. Lack of blood to the left shoulder and arm result in ischemia and stimulates nociceptors in those regions.
A professor gave the following analogy of kidney function to his freshman biology class: "Imagine your desk is a disorganized mess, containing things worth keeping and things you should throw out. Instead of picking through each item one by one and considering if it is to keep or toss, you sweep your arm across your desktop in one smooth motion, knocking the entire contents of the desk into your
large trash can. Then you pull the items you want to keep out of the trash can and place them back on your desk." In what ways is this analogy accurate? In what ways is it inaccurate? Some students in his class argue that the kidneys are inefficient and poorly designed. How should the professor respond? What modern medical device may he cite in his response? What will be an ideal response?
The cupula are found in the ________
A) saccule B) utricle C) ampulla D) vestibule
Blood levels of hormone are kept within very narrow ranges by _________ mechanisms.
A. humoral B. neural C. hormonal D. negative feedback