The brain uses _____ % of the oxygen and _____ % of all the glucose consumed by the body
a. 10/10
b. 20/20
c. 50/20
d. 20/50
e. none of the above
D
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According to the hierarchy of motor control,
A. the highest level of control consists entirely of neurons in the primary motor region of the cerebral cortex. B. the middle level of control does not involve any areas of the cerebral cortex. C. the local level of control includes the cerebellum and basal nuclei. D. structures in the middle level receive information from both the higher and the local levels of the hierarchy. E. afferent information from skin, joint, and muscle receptors cannot modify a movement once it has been initiated by a motor program from the middle level of the hierarchy.
Which are monoamines? select all that apply.
a) norepinephrine b) insulin c) dopamine d) glucagon
In compact bone, ________ connect adjacent lacunae, thereby providing pathways for nutrients and other materials to pass between osteocytes.
A. lamellae B. perforating canals C. blood vessels D. osteonic canals E. canaliculi
Transfer of mRNA from the nucleus to the cytosol occurs through
A) tRNA. B) DNA. C) endocytosis. D) exocytosis. E) nuclear pores.