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Lab Quiz
reflex arc
12
Anatomy
Undergraduate 1
11/15/2009

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Cards

Term
name 5 components of a reflex arc in order
Definition
1.sensory receptor
2.sensory neuron
3.intregrating centor
4.motor neuron
5.effector
Term
how many neuronons ar inn a monosynaptic reflex arc
Definition
2
Term
How many synapses are in the integrating center of a monosynaptic reflex arc
Definition
1
Term
How many neurons are in a polysynaptic reflex arc
Definition
3
Term
how many synapses ar in a polysynaptic reflex ar containing 2 interneurons in the integrating center?
Definition
3
Term
which type of neuron does the sensory neuron synapse with in a monosynaptic reflex arc
Definition
motor
Term
which type of neuron does the sensory neuron synapse with in a polysynaptic reflex ard
Definition
interneurons
Term
define a reflex
Definition
the response of the effector to stimulation by the motor neuron of the reflex of the reflex arc
Term
desccribe the difference between a somatic and visceral reflex
Definition
reflex are rapid involuntary motor responses
the name of the reflex tells us where they occur and what job
*a somatic reflex is a contraction of the skeletal muscle,
* if the motor response involves the response of smooth muscle cardio muscle or glands it is automatic (visceral) reflex
Term
difference between cranial and spinal reflex
Definition
reflexes mediated by cranial nerves are cranial reflexes (brain stem)
spinal reflexes are reflexes mediated by the spinal nerves and spinal cord
Term
describe the difference between ipsilateral and contralateral reflex arc
Definition
reflex arcs involve sensory receptors, sensory nerve fibers, motor neurons and effectors----
ipsilateral occur only on one side of the body... whereas contralateral occur on one side of the body with the exception of motor neurons and effectors occuring on the opposite side
Term
define reciprocal innervation
Definition
stimulation of contraction in agonistic muscles with simultaneous inhibition of antagonistic muscles
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