Nervous System Overall Structure

Which structures make up the central nervous system (CNS)?

• Spinal nerves and cranial nerves

• Brain and spinal cord

• Sensory receptors throughout the body
  

• Autonomic ganglia

The peripheral nervous system (PNS) primarily consists of:

• Only the brain

• Brain and spinal cord

• Brain and spinal cord

• Cerebrum and cerebellum

The somatic nervous system mainly controls:

• Heart rate and digestion automatically
  

• Voluntary movement of skeletal muscle

• Hormone secretion

• Reflex centers in the brainstem only

Are you enjoying the video lesson?

• Yes

• No

The autonomic nervous system (ANS) is responsible for:

• Conscious control of movement

• Memory and learning functions

• Automatic regulation of internal organs

• Sensory interpretation from the skin

Which division prepares the body for “fight or flight” responses?

• Somatic nervous system

• Parasympathetic division

• Central nervous system

• Sympathetic division

Which division promotes “rest and digest” activities such as slowing heart rate and increasing digestion?

• Sympathetic division

• Parasympathetic division

• Somatic nervous system

• Central nervous system

Which statement best explains the relationship among the divisions of the nervous system?

• The CNS controls only digestion while the PNS controls movement

• The PNS includes somatic and autonomic systems that connect the CNS to the body

• The autonomic system is part of the CNS while the somatic is separate

• The parasympathetic system is unrelated to the autonomic system