What structures are formed from neural crest cells?
A. sensory, autonomic, and enteric neurons
B. pigmented body cells
C. adrenal medulla
D. facial bones
E. All of the choices form from neural crest cells
E
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What hormone is necessary for the epiphyseal discs (growth plates) to seal and stop bone growth in length?
A. PTH B. Leptin C. Estrogen D. Calcitonin
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
Pig skin is ________
Fill in the blank(s) with correct word
Which of the following statements regarding the vestibular system is TRUE?
A. Deflection of the basilar membrane by fluid moving within the semicircular canals allows us to detect rotational movement of the head. B. The utricle and saccule are mainly responsible for detecting angular rotation of the head. C. The vestibular apparatus is principally involved in our ability to detect and interpret sound. D. Receptors in the utricle and saccule detect changes in the position of the head with respect to gravity. E. Hair cells in the cochlea are involved in the detection of movement and position of the head.