Study Set Content:
Central Nervous System (CNS)
Brain
Spinal
Peripheral Nervous System
Neuronal Tissues Outside the CNS
The peripheral nervous system is subdivided into different subdivisions:
Neurons
Spinal Cord
carries signals away from the brain
Neurons
to the peripheral tissues
Spinal cord
neurons that carry signals to the brain and the spinal cord as sensory data. Brings information from the periphery into the CNS
• Afferent neurons
send signals from the brain to the muscles, gland and organs of the body in response to sensory input to modulate the function of the efferent divisions.
Efferent neurons
PNS
Efferent neurons
Afferent Neurons
Efferent neurons
Motor system
Autonomic nervous system
Afferent (sensory ) neurons
Hearing
Autonomic nervous system
Sympathetic division
Parasympathetic division
Enteric division
• Motor system is also known as the
somatic nervous system
This is the motor portion and this is concerned with the consciously controlled functions such as movement, respiration, and posture
somatic nervous system (SNS)
regulates our everyday requirements of our vital bodily functions.
autonomic system
is our alert system it can quickly ready your body to face with any emergency cases.
Sympathetic
is our resting and digesting system and automatically helps in normal body functions without your conscious effort
Parasympathetic
Independent (autonomous) in that its activities are not under direct conscious control
AUTONOMIC NERVOUS SYSTEM (ANS)
Automatic • Self-governing • Involuntary
AUTONOMIC NERVOUS SYSTEM (ANS)
Is concerned primarily with consciously controlled functions such as movement, respiration, and posture.
THE SOMATIC SUBDIVISION
Motor portion
THE SOMATIC SUBDIVISION
