Physiology 2: I & II Flashcards
Fibers of Most Nerves
Sensory + Motor
Nerves that Conduct Impulses to CNS
Sensory (Afferent)
Nerves that Conduct Impulses Away from CND
Motor (Efferent)
Nerves from the Neck Down
General
Nerves within the Head
Special
Nerves that Stimulate Skeletal Muscles
Somatic
Nerves that Stimulate Smooth Muscle and Organs
Visceral
Most Simple Nerve Pathway
Sensory Neuron - Interneuron - Motor Neuron
Reflex Arc
Reflex Arc Characteristics
- Automatic
- Subconscious
- Helps Maintain Homeostasis
- Involuntary
Tracts that Conduct Sensory Impulses to the Brain
Ascending
Tract that conducts sensory impulses of pain, temperature, and pressure and touch from various body regions
Spinothalamic
Tracts that Conduct Motor Impulses from the Brain
Descending
Tract that conducts motor impulses to various skeletal muscles
Corticospinal
Receptors that detect tissue damage
Nociceptors
Receptors that detect change in muscle/tendon
Proprioceptors
Receptors that detect light touch or pressure
Meissner’s Corpuscles
Receptors that detect deep pressure
Pacinian Corpuscles
Visceral pain felt as if it is coming from another part of the body
Referral Pain
Referral Pain Pattern for a Heart Attack
Left Shoulder
Proprioceptor that detects changes in muscle length.
Causes Contraction
Muscle Spindle
Proprioceptor that detects changes in tendon tension
Inhibits Contraction
Golgi Tendon Organ