The choroid coat contains no ________.
A. photoreceptors
B. muscles
C. blood vessels
D. melanin
Answer: A
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Integrating centers typically contain large numbers of
A) Interneurons. B) Sensory neurons. C) Efferent neurons. D) Motor neurons.
The resilience of bone is thought to come from which of the following?
A) presence of osteoblasts in the bone B) amount of mineral salt and protein in the bone C) amount of mineral salts in the bone D) sacrificial bonds in or between collagen molecules
Abdominal circulation, where venous blood is drained from the stomach and the small and large intestines, first enters the liver through the:
What will be an ideal response?
Case study:You have just admitted Mary Roberts, a 70-year-old woman, to the hospital for GI bleeding. Her blood pressure is 130/80, pulse 80/min and irregular, respirations 18/min, and temperature 99.2. Mrs. Roberts denies pain at this time, although she appears anxious and very pale. Her medical history includes lung cancer that was diagnosed two weeks ago, peptic ulcer disease with reflux esophagitis, and "fluid retention." Admission lab work shows a plasma Na+ of 152 mEq/L and K+ of 2.8 mEq/L.The K+ level of 2.8 mEq/L indicates hypokalemia. Low plasma K+ levels will cause ________.
A. muscle weakness B. paralysis C. thirst D. tremors, tetany, and convulsions E. increased body temperature