Divisions of the Nervous system

What does CNS stand for?

Central nervous system

What structures make up the CNS?

Brain and spinal cord

What is the main function of the CNS?

Information processing and response coordination

What does PNS stand for?

Peripheral nervous system

What structures make up the PNS?

Neurons outside the CNS

What types of neurons make up the PNS?

Sensory and motor neurons

What is an afferent neuron?

Sensory neuron carrying information to the CNS

What is an efferent neuron?

Motor neuron carrying information from the CNS

What does the acronym SAME stand for?

Sensory Afferent Motor Efferent

What is the afferent division?

The sensory division carrying information to the CNS

What is the role of the afferent division?

Transmit sensory information to the CNS

What do receptors do in the afferent division?

Detect stimuli and send information to the CNS

What are somatic sensory receptors?

Receptors monitoring skeletal muscles and joints

What do somatic sensory receptors detect?

Position and movement of muscles and joints

What are visceral sensory receptors?

Receptors monitoring internal organs

Give an example of information detected by visceral sensory receptors

Stomach or bladder fullness

What are special sensory receptors?

Receptors for specialised senses

Which senses use special sensory receptors?

Smell, taste, vision and hearing

What is the efferent division?

The motor division carrying commands from the CNS

What is the role of the efferent division?

Transmit motor commands from the CNS

What is the somatic nervous system?

Efferent division controlling skeletal muscle

What are the effectors of the somatic nervous system?

Skeletal muscles

What type of responses does the somatic nervous system control?

Voluntary movement

What is the autonomic nervous system?

Efferent division controlling involuntary functions

What are the two divisions of the autonomic nervous system?

Sympathetic and parasympathetic

What effectors are controlled by the autonomic nervous system?

Smooth muscle, cardiac muscle and glands

What type of responses does the autonomic nervous system control?

Involuntary and hormonal responses

What is an effector?

A tissue that carries out a response

What are the main types of effectors in the body?

Muscles and glands

what is the PNS divided into?

motor and sensory

function of the motor system

carry signals from brain to muscles (efferent)

function of the sensory system

carry signals from environment and receptors in the PNS to the CNS (afferent)

name the receptors of the sensory system

visceral, sensory, special sensory

what is the motor system divided into?

somatic, autonomic

what is the function and effector of the somatic nervous system?

provide movement through skeletal muscle contraction

What is the autonomic nervous system divided into?

sympathetic and parasympathetic

effectors of the sympathetic + parasympathetic division

cardiac muscle, smooth muscle, glands