what is a nerve
bundle of axons sheathed in connective tissue
what makes up the PNS
cranial nerves, spinal nerves, sensory receptors and ganglia
what are the 2 subdivisions of the motor PNS
somatic and visceral motor
what is the effector target tissue of the somatic motor
skeletal muscles
what is a motor unit
motor neuron and the muscle fibers it innervates
what is a neuromuscular junction
synapse
how does a neuromuscular junction occur
axon terminal meets skeletal muscle fivers and a neurotransmitter is released
what is the neurotransmitter of the motor division of pns
acetylcholine
what is the ANS
visceral motor division
what are the effector target tissues of the ANS
cardiac muscle, smooth muscle and glands
function of the ANS
bundle of axons sheathed in connective tissue
what makes up the PNS
cranial nerves, spinal nerves, sensory receptors and ganglia
what are the 2 subdivisions of the motor PNS
somatic and visceral motor
what is the effector target tissue of the somatic motor
skeletal muscles
what is a motor unit
motor neuron and the muscle fibers it innervates
what is a neuromuscular junction
synapse
how does a neuromuscular junction occur
axon terminal meets skeletal muscle fivers and a neurotransmitter is released
what is the neurotransmitter of the motor division of pns
acetylcholine
what is the ANS
visceral motor division
what are the effector target tissues of the ANS
cardiac muscle, smooth muscle and glands
function of the ANS
