The Nervous System

The two largest divisions of the nervous system are the

• parasympathetic and sympathetic.

• central and peripheral.

• afferent and efferent.

• autonomic and somatic.

• somatic and sympathetic.

Which of the follow is the correct order of events in a reflex?

• Afferent system -> Efferent System -> Interneuron

• Efferent System -> Afferent system -> Interneuron

• Interneuron -> Afferent system -> Efferent System

• Afferent system -> Interneuron -> Efferent System

• Interneuron -> Efferent System -> Afferent system

Which of the following is NOT true of reflexes?

• They are automatic and do not require consciousness.

• Many, like the "pull away your hand" or "jerk your knee" reaction, originate in the spinal cord.

• Most occur before you even think about it.

• They originate in the brain and are voluntary.

• Many are evolved reactions meant to keep the body safe.

Which of the following divisions of the nervous system controls voluntary behaviors?

• Sympathetic

• Parasympathetic

• Autonomic

• Somatic

• Afferent

The sympathetic and parasympathetic nervous systems together make up which division of the nervous system?

• Central

• Autonomic

• Somatic

• Peripheral

• Regional

Mukucha's heart is beating rapidly, his pupils are dialated, and his mouth is dry. This response was triggered by which division of his nervous system?

• Sympathetic

• Parasympathetic

• Somatic

• Afferent

• Peripheral

Afferent neurons are primarily responsible for which of the following?

• Moving voluntary muscle.

• Activating the fight or flight response.

• Bringing sensory information from the sensory organs to the central nervous system.

• Maintaining the rest or digest response.

• Keeping the heart beating.

The brain and the spinal cord make up which of the following divisions of the nervous system?

• Peripheral

• Central

• Somatic

• Autonomic

• Sympathetic

"Fight or flight" is mostly associated with which subdivision of the nervous system?

• Somatic

• Central

• Sympathetic

• Parasympathetic

• Spinal

Another name for motor neurons is

• efferent neurons.

• afferent neurons.

• somatic neurons.

• sympathetic neurons.

• parasympathetic neurons .