Which bone does not contain a paranasal sinus?
A. Sphenoid bone
B. Frontal bone
C. Ethmoid bone
D. Mandible
E. Maxilla
D
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The ____ helps hold a tooth in its socket
A. crown B. cementum C. periodontal ligament D. dental arch E. alveoli
What is the correct order for the list of structures of the large intestine, starting at the cecum and ending at the rectum?a: Left colic flexureb: Ascending colonc: Transverse colond: Right colic flexuree: Sigmoid colonf: Descending colon
A. b, d, c, a, f, e B. b, a, c, d, f, e C. e, b, d, c, a, f D. f, c, d, e, a, b E. e, b, a, c, d, f
CD4 is normally used by the helper t-cell to recognize and bind to ________.
A) Foreign antigen B) Interleukin 2 C) Interferon D) MHC I E) MHC II
Why is a neuron unable to produce an additional action potential during the absolute refractory period?
What will be an ideal response?