Name two ways the selectivity of a channel is determined.
What will be an ideal response?
1. the diameter of the central pore
2. the electrical charge of the amino acids that line the channel
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The thyroid gland is visualized easily on CT sectional images of the neck because
A. it is adjacent to the internal jugular vein, so it absorbs contrast that is administered intravenously. B. it is adjacent to the common carotid artery, so it absorbs contrast that is administered intravenously. C. its density is similar to cartilage. D. it naturally contains iodine.
Rib 7 is a __________ rib.
A. true B. floating C. false D. pelvic E. cartilaginous
In untreated type 1 (insulin-dependent) diabetes mellitus, the liver converts fatty acids into ketones, which are released into the blood.
Answer the following statement true (T) or false (F)
A ________ is caused by stretching or tearing of a muscle.
A. spasm B. tendinitis C. strain D. cramp