Radioactive substances that emit positrons are used in ________ scans
A) US
B) KUB
C) RAIU
D) PET
D
Explanation: A) Ultrasound (US) does not use positrons.
B) A kidneys, ureters, and bladder (KUB) x-ray does not use positrons.
C) A radioactive iodine uptake (RAIU) does not use positrons.
D) Correct!
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A) muscle spasm B) osteoarthritis C) osteoporosis D) pain and inflammation
What type of channel is affected by tetrodotoxin (TTX)? Choose the correct option
A) K+ channels are blocked by TTX. B) TTX blocks the Na+ channel by binding tightly to a specific sight on the outside of the channel. C) TTX blocks Cl- ion channels. D) TTX sensitizes voltage-gated Na+ ion channels.
Smooth muscle produces movement of internal organs
Indicate whether the statement is true or false
Which of the following is NOT an example of a site that may offer an after-school program?
A) YMCA B) United Parcel Service C) Good Elementary D) St. John's Church