What type of reflex is a withdrawal reflex?
polysynaptic reflex
The withdrawal reflex is a spinal reflex intended to protect the body from damaging stimuli. It is a polysynaptic reflex, causing stimulation of sensory, association, and motor neurons.
Why is reciprocal inhibition important in a withdrawal reflex?
Reciprocal inhibition facilitates ease of movement and is a safeguard against injury. However, if a “misfiring” of motor neurons occurs, causing simultaneous contraction of opposing muscles, a tear can occur.
What reflex complements the withdrawal reflex?
Crossed extension reflex following withdrawal reflex The nerve synapses with ipsilateral motor neurons that exit the ventral (anterior) horn of the spinal cord and work to pull the soon-to-be injured body part away from danger within 0.5 seconds.
Is withdrawal reflex ipsilateral or contralateral?
Crossed-Extensor Reflex. In this reflex, as withdrawal from the damaging stimulus occurs in the ipsilateral leg, extension occurs in the contralateral leg as a way of maintaining balance.
What is the role of reciprocal innervation during a withdrawal reflex response quizlet?
When the withdrawal reflex is initiated, flexor muscles contract and reciprocal innervation causes the extensor muscles to relax.
Which stimulus would incite a withdrawal reflex?
This automatic response is known as the withdrawal reflex defined as the automatic withdrawal of a limb from a painful stimulus. This reflex protects humans against tissue necrosis from contact with noxious stimuli such as pain or heat. It can occur in either the upper or lower limbs.
What is the importance of reciprocal innervation in muscle reflexes?
To reach optimum efficiency, contraction of opposing muscles must be inhibited while muscles with the desired action are excited. This reciprocal innervation occurs so that the contraction of a muscle results in the simultaneous relaxation of its corresponding antagonist.
What is the function of a withdrawal reflex?
Which stimulus would incite a withdrawal reflex *?
Withdrawal Reflex When a person touches a hot object and withdraws his hand from it without thinking about it, the heat stimulates temperature and danger receptors in the skin, triggering a sensory impulse that travels to the central nervous system.
What is the function of reciprocal innervation?
Reciprocal innervation describes skeletal muscles as existing in antagonistic pairs, with contraction of one muscle producing forces opposite to those generated by contraction of the other.
What is the function of the withdrawal reflex?
The withdrawal reflex is a spinal reflex intended to protect the body from damaging stimuli. It is a polysynaptic reflex, causing stimulation of sensory, association, and motor neurons. In this article we will discuss the basic anatomy, the neural pathways and also the clinical relevance of this reflex.
How is the withdrawal reflex in the leg measured?
The withdrawal reflex in the leg can be examined and measured, using an electromyogram to monitor the muscle activity in the upper leg (biceps femoris) while applying increasing electrical stimulation to the lower leg (sural nerve) on the same side of the body.
Which reflexes involve double reciprocal innervation of muscles?
Such reflexes involve double reciprocal innervation of muscles. Double reciprocal innervation is illustrated by the crossed-extensor reflex. If you step on a tack with your right foot, for example, this foot is withdrawn by contraction of the flexors and relaxation of the extensors of your right leg.
What is reciprocal innervation of the legs?
This is referred to as reciprocal innervation. The withdrawal reflex in the leg can be examined and measured, using an electromyogram to monitor the muscle activity in the upper leg ( biceps femoris) while applying increasing electrical stimulation to the lower leg ( sural nerve) on the same side of the body.