What is an example of Monosynaptic reflex arc?
Reflex arcs that contain only two neurons, a sensory and a motor neuron, are considered monosynaptic. Examples of monosynaptic reflex arcs in humans include the patellar reflex and the Achilles reflex.
Why is it called a Monosynaptic reflex?
A simple reflex contains only one space where information in the spinal cord travels between two nerve cells, called neurons. The space between two neurons is called a synapse. Thus, a simple reflex is called monosynaptic, where “mono” means “one.” There are four parts to a monosynaptic simple reflex.
Which of the following is an example of Monosynaptic reflex?
The perfect example of the monosynaptic reflex is the knee-jerk or the patellar reflex. In this reflex, neuron I has its peripheral ending within the tendons of the quadriceps muscle.
Where do Monosynaptic reflexes occur?
muscle
Monosynaptic reflexes are typically autogenic, which means that they are seen in the muscle, which houses the source of the afferent signal, and/or in its direct agonist.
What is a simple monosynaptic reflex?
A monosynaptic reflex, such as the knee jerk reflex, is a simple reflex involving only one synapse between the sensory and motor neurone. The pathway starts when the muscle spindle is stretched (caused by the tap stimulus in the knee jerk reflex).
What are visceral reflexes?
Visceral reflexes involve a glandular or non-skeletal muscular response carried out in internal organs such as the heart, blood vessels, or structures of the GI tract. They utilize neurons of the autonomic nervous system to elicit their actions.
What is Monosynaptic pathway?
When a reflex arc in an animal consists of only one sensory neuron and one motor neuron, it is defined as monosynaptic, referring to the presence of a single chemical synapse. By contrast, in polysynaptic reflex pathways, one or more interneurons connect afferent (sensory) and efferent (motor) signals.
Is the Golgi tendon reflex Monosynaptic?
The stimulus detected by the sensory nerve endings in the Golgi tendon organ in the patellar tendon is transmitted by the afferent fibers onto the spinal cord. This response, which arises from direct innervation of the motoneuron by the motor afferent, is called a monosynaptic reflex.
How many neurons are in a Monosynaptic reflex arc?
two neurons
When a reflex arc consists of only two neurons, one sensory neuron, and one motor neuron, it is defined as monosynaptic. Monosynaptic refers to the presence of a single chemical synapse.
Which are components of visceral reflex arc?
The reflex arc consists of 5 components:
- sensory receptor.
- sensory neuron.
- integration center.
- motor neuron.
- effector target.
What are the four components of a Monosynaptic somatic reflex arc?
The simplest example of a spinal reflex is the monosynapic reflex arc, having four components:
- A receptor (in this case, the muscle spindle).
- An afferent component (sensory input).
- A central component (spinal processing).
- An efferent component (motor output).
Is a monosynaptic reflex a spinal reflex?
When a reflex arc consists of only two neurons, one sensory neuron, and one motor neuron, it is defined as monosynaptic. For example, the withdrawal reflex (nociceptive or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli.