The arrector pili muscle
A. causes hair to "stand on end."
B. contracts when cold, forming goose bumps.
C. is a smooth muscle.
D. All apply.
Answer: D
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The intervertebral discs that separate parts of the backbone are composed of ________.
Fill in the blank(s) with the appropriate word(s).
If white flowers are crossed with red flowers and the resulting plants have pink flowers, that condition is known as ________
A) incomplete dominance B) sex-linked inheritance C) total heterozygosity D) total dominance
The cervical region is the
A. calf. B. armpit. C. hollow behind the knee. D. neck. E. thigh.
Memory consolidation probably occurs via an increase in the effectiveness of existing synapses and also via formation of new ones.
Answer the following statement true (T) or false (F)