Which bone lacks a paranasal sinus?
A) maxillary B) frontal C) zygomatic D) ethmoid
Answer: C
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Clustered at the ends of the terminal bronchioles are the __________, the tiny air sacs where gases are exchanged between air and __________
Fill in the blank(s) with correct word
One difference between cardiac and skeletal muscle contractions is that in cardiac muscle
A. acetylcholine has a more excitatory effect. B. the H zones increase in size while the I bands decrease in size. C. there are no thin filaments. D. some of the calcium used for contraction comes from outside the cell.
The term transudate describes fluid associated with
A) mucus membranes. B) mammary glands. C) cutaneous membranes. D) serous membranes. E) endocrine glands.
ATP is necessary for muscle relaxation
Indicate whether the statement is true or false