Blood is correctly classified as a(n)
A. organ.
B. intracellular fluid.
C. organ system.
D. tissue.
Answer: D
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Julie was diagnosed with an aggressive tumor of the thyroid. Surgery was performed to remove the thyroid. However, post-operatively, Julie's blood Ca2+ levels began declining to life-threatening levels. This decline is most likely due to
A. accidental removal of the parathyroid glands during surgery. B. post-traumatic stress disorder. C. thyroid hormone replacement therapy after the surgery. D. damage to the anterior pituitary during surgery. E. improper laboratory handling of blood samples.
Glucose is a simple ____
a. protein b. nucleic acid c. carbohydrate d. ipid
Which type of sensory receptor is associated with taste, smell, blood oxygen, and blood pH?
a) Chemoreceptor b) Thermoreceptors c) Photoreceptors d) Mechanoreceptors
In order for local potentials to trigger an action potential, the membrane must reach a level called the ______
A. maximum potential B. spike potential C. threshold D. resting membrane potential