Nervous System Flashcards 2.0

What is sensory input?

Detects changes (stimuli) inside and outside of the body

What is integration?

Processing and interpreting sensory input to decide what to do

What is motor output?

Response to stimuli by activating muscles or glands

What are the two main divisions of the nervous system?

Central Nervous System (CNS)

Peripheral Nervous System (PNS)

What makes up the CNS?

Brain and spinal cord

Function of the CNS?

Integration and command center

What makes up the PNS?

Nerves and ganglia outside the CNS

Function of the PNS?

Carries information to and from the CNS

What is the sensory (afferent) division?

Carries signals to the CNS

What is the motor (efferent) division?

Carries signals away from the CNS

What are the two motor subdivisions?

Somatic and automatic nervous systems

Function of the somatic nervous system?

Voluntary movement (controls skeletal muscles)

Function of the automatic nervous system?

Involuntary control (organs, glands, smooth muscle)

What is sympathetic division?

“Flight-or-Fight” response

When is sympathetic active?

During stress or emergencies

What is the parasympathetic division?

When the body is relaxed

What is the enteric division?

Regulates the digestive tract

What is homeostasis?

Marinating a stable internal environment.

What do motor neurons do?

Carry signals from the CNS

What are ganglia

Clusters of neuron cell bodies in the PNS