Table of Contents
What is contralateral reflex?
The crossed extensor reflex is contralateral, meaning the reflex occurs on the opposite side of the body from the stimulus. To produce this reflex, branches of the afferent nerve fibers cross from the stimulated side of the body to the contralateral side of the spinal cord.
What is the stretch reflex quizlet?
The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. It is a monosynaptic reflex which provides automatic regulation of skeletal muscle length. When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases.
What is the neuroanatomy behind reflexes?
The neuroanatomy of the myotatic reflex follows a model of five main paired neurological structures and actions. These structures are the muscle spindle, primary afferent sensory neuron, inhibitory interneuron, efferent alpha motor neuron, and gamma motor neuron.
What type of reflex is a crossed extensor reflex?
withdrawal reflex
The crossed extensor reflex is just a withdrawal reflex on one side with the addition of inhibitory pathways needed to maintain balance and coordination. For example, you step on a nail with your right foot as you are walking along. This will initiate a withdrawal of your right leg.
Which is known as the stretch reflex?
The stretch reflex (also called the myotatic reflex, the muscle stretch reflex and sometimes the knee-jerk reflex), is a pre-programmed response by the body to a stretch stimulus in the muscle.
What is the function of a stretch reflex?
The stretch reflex (myotatic reflex), or more accurately “muscle stretch reflex”, is a muscle contraction in response to stretching within the muscle. The reflex functions to maintain the muscle at a constant length.
What is not required for a reflex arc?
A reflex does not require any thought input. The path taken by the nerve impulses in a reflex is called a reflex arc. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord.
Which is part of the muscle relaxes in response to tension?
Produces muscle relaxation and lengthening in response to tension; the contracting muscle relaxes as its antagonist is activated. Tendon the obturator and femoral nerves branch from this plexus
What do you mean by transduction in muscle contraction?
Transduction refers to the conversion of ____. A reflex that causes muscle relaxation and lengthening in response to muscle contraction is called a ____. Nice work! You just studied 70 terms!
How does the flexor prevent muscle overstretching?
Flexor prevents muscle overstretching and maintains muscle tone stretch Produces muscle relaxation and lengthening in response to tension; the contracting muscle relaxes as its antagonist is activated. tendon the obturartor and femoral nerves branch from this plexus
What is the function of the ipsilateral with drawl reflex?
Consists of an ipsilateral with-drawl reflex and a contralateral extensor reflex; important in maintaining balance. Crossed- Extensor Produces a rapid withdrawal of the body part from a painful stimulus; ipsilateral Flexor Prevents muscle overstretching and maintains muscle tone.