Myelinated axons conduct impulses much faster because
a. the myelin insulates the axon
b. ion channels only have to open at the nodes
c. voltage is not lost along myelinated areas
d. saltatory conduction occurs
e. all of the above are true
E
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The anesthetic a dentist injects before drilling to clean and repair a cavity is done to block sensory impulses from a branch of what cranial nerve?
A) abducens B) facial C) trigeminal D) trochlear
Olfactory axons pass through the bony ________ plate on their way to the olfactory bulb.
Fill in the blank(s) with the appropriate word(s).
Which is a function of transfer RNA (tRNA)?
A. transport mRNA out of the nucleus B. binding specifically to mRNA and nonspecifically to amino acids C. binding specifically to amino acids and nonspecifically to mRNA D. binding specifically to both mRNA and to amino acids
Which cells are considered pluripotent?
a. neurons b. tissue-specific stem cells c. embryonic stem cells d. both b and c e. none of these answers.