BIO 112 Ch. 9 Quiz

Which of the following is a function of the nervous system?

• Regulating blood sugar levels

• Digesting food

• Transmitting signals between different parts of the body

• Producing red blood cells

Which of the following best describes the divisions of the nervous system and their functions?

• Central nervous system: processes information; Peripheral nervous system: transmits signals

• Peripheral nervous system: processes information; Central nervous system: transmits signals

• Central nervous system: controls voluntary actions; Peripheral nervous system: controls involuntary actions

• Peripheral nervous system: controls voluntary actions; Central nervous system: controls involuntary actions

Which of the following correctly lists the types of neuroglia, their functions, and where they are found?

• Astrocytes provide support and repair in the CNS; Microglia act as immune cells in the CNS; Oligodendrocytes form myelin in the CNS; Schwann cells form myelin in the PNS.

• Astrocytes form myelin in the PNS; Microglia provide support in the CNS; Oligodendrocytes act as immune cells in the CNS; Schwann cells repair in the CNS.

• Astrocytes act as immune cells in the PNS; Microglia form myelin in the CNS; Oligodendrocytes provide support in the CNS; Schwann cells repair in the PNS.

• Astrocytes repair in the PNS; Microglia form myelin in the PNS; Oligodendrocytes act as immune cells in the PNS; Schwann cells support in the CNS.

Which statement is true regarding the structural classification of neurons and their location?

• Multipolar neurons are primarily located in the brain and spinal cord.

• Bipolar neurons are commonly found in the digestive system.

• Unipolar neurons are typically found in the brain.

• Anaxonic neurons are prevalent in the autonomic nervous system.

What are the different types of neurons based on function?

• Sensory neurons, Motor neurons, Interneurons

• Unipolar neurons, Bipolar neurons, Multipolar neurons

• Pyramidal neurons, Purkinje neurons, Granule neurons

• Excitatory neurons, Inhibitory neurons, Modulatory neurons

What is the resting membrane potential and how are ions distributed and maintained?

• The resting membrane potential is the electrical potential difference across the cell membrane when the cell is at rest, with ions distributed unevenly across the membrane and maintained by ion channels and pumps.

• The resting membrane potential is the electrical potential difference across the cell membrane when the cell is active, with ions distributed evenly across the membrane and maintained by ion channels and pumps.

• The resting membrane potential is the electrical potential difference across the cell membrane when the cell is at rest, with ions distributed evenly across the membrane and maintained by diffusion.

• The resting membrane potential is the electrical potential difference across the cell membrane when the cell is active, with ions distributed unevenly across the membrane and maintained by diffusion.

Tags

NGSS.HS-LS1-3

Which lists the steps of an action potential in correct order?

• 1. Resting potential, 2. Repolarization, 3. Hyperpolarization, 4. Depolarization, 5. Threshold reached, 6. Return to resting potential
• 1. Resting potential, 2. Depolarization, 3. Threshold reached, 4. Repolarization, 5. Hyperpolarization, 6. Return to resting potential.
• 1. Threshold reached, 2. Hyperpolarization, 3. Resting potential, 4. Depolarization, 5. Repolarization, 6. Return to resting potential
• 1. Depolarization, 2. Resting potential, 3. Hyperpolarization, 4. Threshold reached, 5. Repolarization, 6. Return to resting potential

Tags

NGSS.HS-PS2-5

What is the function of myelination?

• To insulate nerve fibers and increase the speed of electrical impulses

• To provide structural support to neurons

• To produce neurotransmitters

• To protect the brain from physical damage

What happens to a neurotransmitter after it has completed its action?

• It is destroyed by enzymes

• It is reabsorbed by the neuron

• It diffuses away from the synapse

• All of the above

What is a reflex arc?

• A neural pathway that controls a reflex action

• A type of muscle contraction

• A part of the brain responsible for voluntary actions

• A type of sensory receptor