In the simplest reflex arc,
A) a sensory neuron contacts few interneurons before synapsing on a motor neuron.
B) transmission of the impulse from one cell in the arc to another is electrical.
C) the sensory neuron synapses directly with on a motor neuron.
D) the response is produced by a polysynaptic chain of at least ten neurons.
E) None of the answers are correct.
C) the sensory neuron synapses directly with on a motor neuron.
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The hormone ANP
A. increases urine output and increases blood volume. B. increases urine output and decreases blood volume. C. decreases urine output and decreases blood volume. D. decreases urine output and increases blood volume.
Smooth muscles relax when intracellular Ca2+ levels drop but may not cease contractions
Indicate whether the statement is true or false
Which of these is NOT a neurotransmitter?
A) glutamate B) norepinephrine C) acetylcholine D) myelin E) dopamine
Insulin shock occurs when there is
A. damage to pancreatic beta cells. B. too much glucagon available. C. a rapid fall in the blood sugar level. D. overstimulation of alpha cells. E. not enough glucagon available.