Last- Reflexes Flashcards
a rapid, predictable, and involuntary response to an environmental stimulus
Reflex
the neural pathway responsible for a reflex
reflex arc
a “reflex arc” is composed of what 5 parts:
sensory receptor sensory nerve integrating center motor neuron effector organ
responds to an internal or external stimulus, and initiates an afferent nerve impulse in a sensory nerve
sensory receptor
passes the afferent impulse along to the CNS
sensory nerve
reacts to afferent impulses by generating and efferent motor impulse
integrating center
transmits a motor nerve impulse from the integrating center to an effector organ, like a muscle or gland.
motor neuron
responds to the motor impulse w a typical motor action
effector organ
innate responses designed to protect the body, and enable posture maintenance and balance when standing and moving; these reflexes involve the somatic nervous system which controls the contraction of all skeletal muscles
somatic reflexes
types stretch reflexes used to demonstrate “somatic reflexes”
pateller feflex
achilles reflex
Cranial reflex [special somatic reflex(corneal reflex; eye)]
somatic reflex that stimulates the “quadraceps femoris of the thigh” causeing the “knee to jerk”
patellar reflex
somatic reflex which stimulates the “gastrocnemius muscle” causeing the ?”foot to extend”?
Achilles reflex
special kind of somatic reflex controlled by cranial nerves; stimulates the “trigeminal nerve(V) carrying an afferent nefve impulse and the “facial nerve (VII)” carries the efferent nerve impulse, stimulating the cornea causing the eye to blink
Corneal (cranial) reflex
involuntary responses which control reactions of smooth & cardiac muscle and glands; controlled by autonomic nervous system
Autonomic reflexes
types of autonomic reflexes
pupillary reflex
ciliospinal reflex
