Which of the following is a conducting zone structure?
A) respiratory bronchiole
B) terminal bronchiole
C) alveolar sac
D) alveolar duct
B
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Which of the following is true of osteoclasts?
A) Osteoclasts maintain protein and mineral content of matrix. B) Osteoclasts are responsible for laying down osteoid. C) Osteoclasts form cytoplasmic extensions within canaliculi. D) Osteoclasts are located within lacunae. E) Osteoclasts secretes protein digesting enzymes and acids that dissolve matrix.
In order for a lymphocyte to respond to an antigen, the antigen must _________.
A) be phagocytized by the lymphocyte. B) enter the cytoplasm of the lymphocyte. C) depolarize the lymphocyte. D) bind to the DNA of the lymphocyte. E) bind to specific receptors on the lymphocyte membrane.
Which cranial nerve is classified as strictly a sensory nerve?
A) Vagus B) Hypoglossal C) Olfactory D) Oculomotor
In the fetal skull, the developing cranial bone are connected by areas of fibrous connective tissue called fontanelles.
a. true b. false