Nervous System: Organizations and Functions

Somatic (SNS); Autonomic (ANS) nervous systems

what are the divisions of PNS

somatic nervous system

• sensory neurons from head, body wall, limbs, special sense organs

• motor neurons to skeletal muscle: voluntary

autonomic nervous system

• sensory neurons from viscera

• motor neurons to viscera (cardiac muscle, smooth muscle, glands): involuntary

  • sympathetic: fight or flight

  • parasympathetic: rest and digest

enteric nervous system

• sensory neurons monitor chemical changes and stretching of GI wall

• motor neurons regulate contractions, secretions, and endocrine secretions (involuntary)

voluntary

voluntary or involuntary: motor neurons to skeletal muscle

involuntary

voluntary or involuntary: motor neurons to viscera (cardiac muscle, smooth muscle, glands)

autonomic

sympathetic and parasympathetic belong to which nervous system

involuntary

voluntary or involuntary: motor neurons regulate contractions, secretions and endocrine secretions

afferent nerves

sensory receptors and sensory nerves are?

afferent nerves

carry information into the brain and spinal cord through cranial and spinal nerves

integrative function

integration: information processing (what function)

perception

awareness of sensory input

integrative function

analyzing and storing information to help lead to appropriate responses

efferent nerves

signals muscles and glands

muscles and glands

what are examples of effectors

sensory, integrative, motor function

what are the functions of nervous system