The ________ conducts signals to the brain via the optic nerve and interprets them as vision.
A) iris
B) lens
C) pupil
D) retina
Answer: D) retina
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What are menisci (articular discs)?
A) wedges of fibrocartilage that partially or completely divide the synovial cavity B) small sacs containing synovial fluid C) cavities lined with cartilage D) tendon sheaths
The type of muscle that is found in blood vessel walls is ________ muscle.
A. skeletal B. smooth C. cardiac
How can you distinguish the sympathetic from the parasympathetic division of the autonomic nervous system?
A. Origin of the preganglionic neurons B. Neurotransmitters released by the preganglionic neurons C. Sympathetic can be both excitatory and inhibitory D. Presence of peripheral ganglia
Which of the following is an example of positive feedback?
A. Increasing heart rate with activity B. Sweating when hot C. Forming a blood clot when bleeding D. Eating when hungry