As part of a bird's musculoskeletal system, the ________________________________________ is the sternum or breastbone
Fill in the blank(s) with correct word
keel
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Atoms in a covalent molecule
A) share electrons in triple pairs. B) share electrons in double pairs. C) can share electrons in single pairs, double pairs, or triple pairs. D) share electrons in single pairs. E) share electrons singly, never in pairs.
The primary erythrocyte buffer for carbonic acid changes
a. is phosphates. b. is histidine. c. is hemoglobin. d. is dipeptides. e. all of these.
Which chamber of the inner ear receives sound waves directly from the oval window?
A. Scala tympani B. Cochlear duct C. Vestibule D. Scala media E. Scala vestibuli
The figure illustrates a detailed drawing of the neuromuscular junction. What does "C" represent?
A. synaptic vesicles B. synaptic cleft C. sarcolemma D. presynaptic terminal E. postsynaptic membrane