Neuroscience Quiz

Which of the following events associated with the transmission of an impulse across a synapse occurs last?

• chemically gated channels for sodium open

• neurotransmitter is released into synaptic cleft

• calcium diffuses into an axon bulb

• action potential arrives at an axon bulb

• neurotransmitter binds to receptors on postsynaptic membrane

________ is the most highly developed part of the brain; the corpus callosum interconnects its two sides; associated with language and conscious thought.

• cerebellum

• Medulla oblongata

• cerebrum

• Brain stem

The contraction of smooth and cardiac muscle is controlled by the ________ division of the peripheral nervous system.

• somatic

• sensory

• autonomic

• conscience

Which area of the brain transmits info between cerebellum and higher brain center?

• Cerebrum

• Cerebellum

• Medulla oblongata

• Thalamus

• Pons

A reflex, such as withdrawing your leg when you step on a sharp object, involves ____________________.

• The spinal cord

• Interneurons

• Motor Neurons

• Sensory Neurons

• All the above

………division of the nervous system is associated with fight-or-flight responses.

• Central

• Parasympathetic

• Motor Neurons

• Interneurons

• Sympathetic

The functional unit of the nervous system is ---------------

• Neuron

• Nerve

• Axon

• Myelin

• Dendrite

-------------------- receive incoming messages and convey it to the cell body; and -------------------- transmit signals toward a receiving cell.

• Axons - Dendrites

• Axons - Axons

• Dendrites - Myelin

• Dendrites - Axons

• Dendrites - Dendrites

--------------------, in CNS, and --------------------, in PNS are type of neuroglia cells that function to produce myelin.

• Schwann cells - oligodendrocytes

• Oligodendrocytes - oligodendrocytes

• Schwann cells - Schwann cells

• Oligodendrocytes – Schwann cells

• Dendrites - Dendrites

The resting membrane potential of a neuron is -70 millivolt; this is caused by the charge difference between the inside of a cell which is more ………….. than the outside.

• negative

• positive

• uncharged

• neutral