Where is cerebrospinal fluid found around the spinal cord?
A. Subarachnoid space
B. Epidural space
C. Thecal sac
D. Subdural space
Answer: A
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If AAG are the anti-codon in tRNA, what is the matching codon on the mRNA?
a) UGA
b) UCA
c) TGA
d) TCA
e) UUC
Which of the following statements about the vagina is FALSE?
a. at the distal end of the vagina is the external cervical os b. during pregnancy, the vagina produces progesterone c. the hymen separates the vagina and vestibule until the initial sexual intercourse d. all of the above are true
A motor unit is ________
A) all the axons of nerve cells that innervate a muscle B) a single motor neuron and all the muscle cells it innervates C) a period of time during muscle contraction D) a group of linked muscle cells
A primary spermatocyte is ________; a secondary spermatocytes is______.
A. tetraploid; diploid B. diploid; diploid C. diploid; haploid D. haploid; haploid E. haploid; tetraploid