Which of the following muscles would contract more forcefully?
A) a muscle receiving 5 action potentials per second
B) a muscle receiving 10 to 15 action potentials per second
B) a muscle receiving 10 to 15 action potentials per second
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The _______ is responsible for forming the outer, limiting barrier of a cell
A. peroxisome B. ribosome C. mitochondrion D. plasma membrane E. centrosome
In the adult, red blood cells are produced in areas of the ________.
Fill in the blank(s) with the appropriate word(s).
Where does the spinal cord end?
A. The dorsal median sulcus B. The filum terminale C. The medullary cone D. The lumbosacral enlargement E. The cauda equina
The ________ and ________ systems control and coordinate the 50 trillion cells in a human
A) endocrine; nervous B) muscular; nervous C) circulatory; endocrine D) muscular; skeletal E) circulatory; lymphatic