Endocannabinoids are retrograde neurotransmitters, meaning they are ________.
A. released from presynaptic neurons and diffuse back to the presynaptic cell body
B. released from presynaptic neurons and diffuse to the postsynaptic neuron
C. released from postsynaptic neurons and diffuse to the presynaptic neuron
D. None of the choices are correct.
Answer: C
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IPSPs (inhibitory postsynaptic potentials)
A) are local depolarizations. B) are local hyperpolarizations. C) increase membrane permeability to sodium ions. D) block the efflux of potassium ions. E) block the efflux of calcium ions.
Reproductive cells are called
A) meiosis. B) gametes. C) fertilization. D) zygotes. E) None of the answers are correct.
Which two factors play an important part in the movement of chyme from the stomach to the small intestine?
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