Are reflexes predictable or unpredictable?
REFLEXES ARE RAPID, PREDICTABLE, INVOLUNTARY MOTOR RESPONSES TO STIMULI; THEY ARE MEDIATED OVER NEURAL PATHWAYS CALLED REFLEX ARCS.
Are somatic reflexes quick?
In doing so, these reflexes utilize some of the same lower motor neurons (alpha motor neurons) used to control skeletal muscle during conscious movement. Because reflexes are quick, it makes sense that somatic reflexes are often meant to protect us from injury.
Are somatic reflexes stereotyped?
Reflexes are a unique category of responses because they do not require the higher centers used for conscious or voluntary responses. Instead reflexes are involuntary, stereotyped (they are repeatable under the same stimulus conditions) responses that occur quickly.
Can you override a somatic reflex?
In some circumstances, such as the super human feats of strength you have heard about, the CNS has the ability to override the reflex of the GTO. This happens as upper motor neurons modify the reflex at the level of the spinal cord.
What are somatic reflexes?
Somatic reflexes involve sensory neurons that connect sensory receptors to the CNS and motor neurons that project back out to the skeletal muscles. Visceral reflexes that involve the thoracolumbar or craniosacral systems share similar connections.
What is true about somatic reflexes?
Somatic reflexes include all reflexes that stimulate skeletal muscles. An example of such a reflex is the rapid withdrawal of your foot from a piece of glass you have just stepped on.
What is the order of somatic reflex?
perineurium. Which one of the following best describes the order of a somatic reflex? Somatic receptor -> afferent nerve fiber -> interneuron -> efferent nerve fiber ->skeletal muscle.
Where do somatic reflexes originate?
Somatic receptors in the skin, muscles and tendons. Afferent nerve fibers carry signals from the somatic receptors to the posterior horn of the spinal cord or to the brainstem. An integrating center, the point at which the neurons that compose the gray matter of the spinal cord or brainstem synapse.
What’s the order of a somatic reflex?
Stimulus, sensory neuron, intermediary neuron, motor neuron and defector organ is the correct order of general reflex arc.
What do somatic reflexes stimulate?
Somatic reflexes involve stimulation of skeletal muscles by the somatic division of the nervous system. Most reflexes are polysynaptic (involving more than two neurons) and involve the activity of interneurons (or association neurons) in the integration center.
Which of the following is are examples of somatic reflexes?
Examples: Knee jerk reflex and withdrawal reflex. Involve muscle groups and related joints, bones, tendons, ligaments and fascia; and are referred to as inter-joint reflex movements. Examples: Foot grasp reflex and Babinski reflex.
Is the stretch reflex a somatic or autonomic reflex?
Somatic reflexes are involved in the reflex control of skeletal muscles and as such there are many different types of somatic reflexes including scratching reflexes, withdrawal reflexes and stretch reflexes and tendon reflexes.
What is the difference between a somatic reflex and an autonomic reflex?
The main difference between the somatic and autonomic systems is in what target tissues are effectors. Somatic responses are solely based on skeletal muscle contraction. The autonomic system, however, targets cardiac and smooth muscle, as well as glandular tissue.
What is false about the flexor withdrawal reflex?
The effect of the motor signal is to relax a muscle. What is false about the flexor withdrawal reflex? Your doctor taps on your patellar tendon. List out the steps, in detail, of the nervous pathway of the reflex he is testing.
What is the responsibility of somatic nervous system?
The brain and spinal cord are responsible for processing and integrating the various sources of information to allow us to develop a response. Therefore the main function of the somatic nervous system is to connect the CNS with organs and striated muscle to perform our daily functions.