How many bones make up the axial skeleton?
A) 50
B) 60
C) 70
D) 80
E) 90
Answer: D
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The entire cardiovascular system is lined internally with a special type of epithelial tissue called _______
Fill in the blank(s) with correct word
When an action potential is over and the membrane has returned to resting potential, the voltage-gated sodium channel:
a. is closed and not capable of opening b. is closed and capable of opening c. is open d. open and not capable of closing e. two of these answers.
The membranous areas between the cranial bones of the fetal skull are called ________________.
A) foramina. B) sutures. C) frontanelles. D) areolas.
All of the following are true of neurons except that they
A) lack centrioles and cannot divide. B) conduct a nervous impulse. C) are composed of dendrites, a cell body, and an axon. D) are a very specialized form of connective tissue. E) are the longest cells in the body.