Which organ system does not excrete waste?
A. The urinary system
B. The digestive system
C. The respiratory system
D. The cardiovascular system
E. The integumentary system
Answer: D
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What is the origin of the postganglionic fibers that cause the pupil to dilate?
A. Optic ganglion B. Ciliary ganglion C. Splanchnic nerves D. Solar plexus E. Carotid plexus
The parts of a protein that change when it denatures are
A. the primary and secondary structures. B. the secondary and tertiary structures. C. the tertiary and quaternary structures. D. the amino acid sequence and the secondary structure.
The three types of cellular elements in the blood are ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word
When a muscle relaxes,
A. crossbridges form and muscle extensibility returns the muscle to rest length. B. crossbridges form and muscle elasticity returns the muscle to rest length. C. crossbridges stop forming and muscle elasticity returns the muscle to rest length. D. crossbridges stop forming and muscle extensibility returns the muscle to rest length