BIO QUIZ QUESTIONS

What is the last spot where CSF circulates before being resorbed by the circulatory system?

arachnvoid villi

The anterior root of a spinal nerve contains A) cell bodies of motor neurons B) interneurons C) axons of sensory neurons D) cell bodies of sensory neurons E) axons of motor neurons.

E) axons of motor neurons.

The neurotransmitter glutamate opens channels that are permeable to sodium ions. What effect does glutamate produce on a postsynaptic neuron?

EPSP's

Which of the following neurotransmitters is a dissolved gas?

Nitric Oxide

Which of the following is NOT a function of cerebrospinal fluid (CSF)? 1. Remove waste 2. Transport Blood 3. Cushion the brain 4. Support weight of brain

Transport blood to brain structures

A postsynaptic neuron will have an excitatory postsynaptic potential (EPSP) when

chemically regulated sodium channels are open and sodium is diffusing into the cell.

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.

local hyperpolarizations

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?

loss of sensation in his torso