Ch 12 Nervous System Flashcards
The order of the nervous system
Stimulus -> Sensory receptor -> Sensory neuron -> CNS -> Motor neuron -> effector
What is considered the thermoreceptor?
Sensory receptors and sensory neurons
What does the PNS do?
Collects info and afferent
What does the PNS do?
Output and efferent
What is in the CNS?
Brain and spinal cord
What does the CNS do?
Integrate
What are the 4 types of effectors?
Skeletal muscle, smooth muscle, cardiac muscle, glands
What’s in the PNS in the system?
Sensory receptor, sensory neuron, motor neuron and effector
What’s is the PNS made of?
Nerves and ganglia
Bundles of axon
Nerves
Clusters of cell bodies
Ganglia
Sensory nervous system =
Afferent nervous system
What does sensory nervous system do?
Receives sensory information
What is somatic sensory system?
Hearing, vision, touching
What is visceral sensory system?
Smooth muscle, cardiac muscle, glands
Motor nervous system =
Efferent nervous system
What muscle is the motor nervous system?
Skeletal muscle
What is somatic motor system?
Sends voluntary signals to skeletal muscles
What is autonomic motor system?
Sends involuntary commands to heart, smooth muscle, and glands
What is in the ANS?
Sympathetic and parasympathetic
What is sympathetic?
Fight or flight and stressor occurring
What is parasympathetic?
Rest and digest and controls homeostasis
What tissue is epineurium?
Dense irregular connective tissue
What tissue is perineurium?
Dense irregular connective tissue
What tissue is endoneurium?
Areolar connective tissue
What does epineurium nerve do?
Encloses entire nerve
What does perineurium nerve do?
Wraps fascicle
What is fascicle?
Smaller group of bundles of axons in nerve
What does endoneurium nerve do?
Supports neuron and wraps an individual axon
Two types of nerves
Cranial and spinal
Classification nerves for function
Sensory, motor, mixed nerves