The muscle cell's electrical response is turned off by an enzyme in the motor end-plate membrane called ____________________
Fill in the blank(s) with correct word
acetylcholinesterase (AChE)
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RANKL or receptor activators of nuclear factor kB
A) are receptors that bind directly to PTH. B) are found on the surface of osteoclasts. C) are molecules that cause osteoblasts to lay down bone. D) is a signal molecule that stimulates osteoclasts development. E) causes calcium to be excreted by the kidneys.
Which of the following accounts for most of the volume of connective tissues?
A) blood vessels B) lipid molecules C) carbohydrates D) cells E) extracellular matrix
In the embryo, the testes develop in the ________________________________________
Fill in the blank(s) with correct word
All of the following are characteristics of skeletal muscle EXCEPT ________
A) voluntary B) striated C) uninucleate D) that the cells are long