Air entering the body is filtered, warmed, and humidified by the
A) upper (conducting) portion of the respiratory tract.
B) lower (respiratory) portion of the respiratory tract.
C) lungs.
D) alveoli.
E) bronchioles.
A) upper (conducting) portion of the respiratory tract.
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Blood vessels are in close proximity to nephrons because certain substances within the ________ must be brought back into the bloodstream.
A. hormones B. plasma C. urine D. filtrate
In osseous tissue, which of the following is able to break down bone?
A) osteocytes B) osteoclasts C) capillaries D) osteons E) nerves
Which curves of the vertebral column are present at birth?
A. Thoracic and sacral B. Lumbar and cervical C. Lumbar and sacral D. Cervical and thoracic E. Lumbar and thoracic
A __________ tool may be used to trim a bird's beak
Fill in the blank(s) with correct word