The patella is classified as a sesamoid bone since it:
A) has a diaphysis and epiphyses. B) has an irregular shape.
C) is longer than it is wide. D) is located within tendons.
Answer: D
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The countercurrent mechanism in the nephron
A. is a method to move sodium to control its concentration. B. keeps interstitial fluid hydrated to maintain blood pressure. C. creates a highly concentrated interstitial fluid so that urine can be concentrated by the collecting ducts when they are permeable to water. D. keeps the volume of water lost in the urine relatively constant.
Due to the structure of the ________, a large amount of moisture is added to the respiratory system every day.
A. nares B. trachea C. conchae D. eustachian tubes
What connects the pharynx to the trachea?
A. Esophagus B. Bronchi C. Alveolar ducts D. Larynx E. Nasal cavity
Define cyanosis
What will be an ideal response?