★ Physiology Quiz
Which statement regarding the sinoatrial node is TRUE?
A. it is innervated by the vagal nerve
B. SA node reaches threshold faster than other heart structures
C. is located in the right atrial wall near the opening of the superior vena cava
D. it does not have a stable resting potential
E. all of the answers
Select your answer:
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Ecology › ViewWhich of the following is NOT considered evidence of evolution?
A. similar DNA
B. similar development
C. similar behavior
D. vestigial structures
Musculoskeletal System › View
When your bicep muscle contracts what happens?
A. Your Tricep muscle also contracts
B. Your Tricep muscle relaxes (lengthens)
C. Your tricep muscle snaps
D. Your Ligaments relax