From superior to inferior, how many individual vertebrae are there of each type?
A. 7; 5; 5; 12; 4
B. 12; 7; 5; 5; 4
C. 7; 5; 5; 4; 12
D. 7; 12; 5; 5; 4
E. 12; 5; 5; 7; 4
Answer: D
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During an isotonic contraction of a muscle in the arm
a. filaments do not shorten in the muscle. b. movement does not occur. c. the muscle does not change length. d. the tension in the muscle does not overcome a load. e. the tension in the muscle remains constant.
In general, water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______
A. membrane channels; membrane channels B. membrane channels; lipid bilayer C. lipid bilayer; membrane channels D. lipid bilayer; lipid bilayer E. None of these choices is correct.
Each lobule of a testicle contains a coiled length of:
a. vas deferens b. seminiferous tubule c. rete testis d. seminal duct