Which of the following is not true of the gastrointestinal tract?
a. It is about 9 feet long in adults.
b. It is also called the alimentary canal.
c. The material in the gastrointestinal tract is considered to be outside the body.
d. All of the above are true of the gastrointestinal tract.
a. It is about 9 feet long in adults.
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The left kidney is slightly lower than the right because of the space occupied by the liver just above it.
a. true b. false
After nervous stimulation stops, what prevents ACh in the synaptic cleft from continuing to stimulate contraction?
A) the tropomyosin blocking the myosin once full contraction is achieved B) acetylcholinesterase destroying the ACh C) calcium ions returning to the terminal cisternae D) the action potential stops going down the overloaded T tubules
Which of the following is not a part of the pelvis?
A) sacrum B) coccyx C) coxal bone D) lumbar vertebrae E) pubic symphysis
Small veins in the neural tissue of the brain empty directly into the
A) coronary sinuses. B) dural sinuses. C) cerebral arterial circle. D) external jugular vein. E) vertebral veins.