The brain and spinal cord are covered by the __________, composed of three membrane layers.
Fill in the blank(s) with the appropriate word(s).
meninges
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The spinal cord consists of four regions and ________ pairs of spinal nerves
A) five B) twelve C) twenty-five D) thirty-one E) The number varies widely among individuals.
During the dilation stage, the cervix expands and becomes thinner. This stage ends once the cervix has fully dilated and ________ (thinned)
Fill in the blank with correct word.
The left border of the heart is formed by the
A) left atrium and right atrium. B) right atrium and right ventricle. C) left atrium and left ventricle. D) right ventricle and left ventricle. E) None of the answers is correct.
Fatty acid A has 10 double covalent bonds scattered throughout its carbon chain while fatty acid B has only single covalent bonds between the carbons in its chain
A. Fatty acid A is saturated. B. Both fatty acids are saturated. C. Both fatty acids are unsaturated. D. Fatty acid B is saturated. E. Fatty acid B is unsaturated.