Module 1.2 Flashcards
(12 cards)
Nervous System
The body’s speedy, electrochemical communication network, consists of all the nerve cells of the peripheral central nervous system.
Central Nervous System
(CNS) the brain and spinal cord
Peripheral Nervous System
The sensory and motor neurons that connect the centra nervous system (CNS) to the rest of the body
Nerves
Bundled axons that from neural cables connecting the central nervous system with muscles, glands, & sensory organs
Sensory Nerves (afferent)
Neurons that carry incoming information from the body;s tissues & sensory receptors to the brain & spinal cord
Motor Nerves (efferent)
Neurons that carry incoming information from the brain & spinal cord to the muscles and glands
Interneurons
Neurons within the brain & spinal cord; communicate internally & process information between the sensory inputs & motor outputs.
Somatic Nervous System
The division of the peripheral nervous system that controls the body’s skeletal muscles. Also called the skeletal nervous system.
Automatic Nervous System
The part of the peripheral nervous system that controls the glands & the muscles of the internal organs
(such as the heart). Its sympathetic division arouses; it’s parasympathetic division calms
Sympathetic Nervous System
The division of the autonomic nervous system that arouses the body, mobilizing it’s energy
Parasympathetic Nervous System
The division of the autonomic nervous system that calms the body, conserving it’s energy
Reflecting
A simple automatic response to a sensory stimulus, such as the knee jerk reflex.
