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There are actual two types of reflex arc. One contains just two and the other contains three.
A reflex arc involves the following components:
1. The receptor (sensory neuron) that detects a stimulus.The sensory neuron transmits the impulse to the spinal cord.
2.The integration center (interneuron) in the cord. This one can be missing. If it is, the reflex is very, very rapid. If the interneuron is used, it can send information up the cord to the brain. Your response will be faster than your brain's "knowing" what happened.
3. A motor neuron transmits a nerve impulse from the spinal cord to a peripheral region.
An effector is a muscle or gland that receives the impulse form the motor neuron. In somatic reflexes, the effector is skeletal muscle. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.
The three neurons in a reflex arc are the sensory neuron, which carries the sensory information from the sensory receptor to the central nervous system; the interneuron, which processes the information in the spinal cord or brain; and the motor neuron, which carries the response signal from the central nervous system to the effector muscle or organ.
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What is an example of a monosynaptic reflex?
The knee-jerk reflex is an example of a monosynaptic reflex. When the patellar tendon is tapped, sensory neurons directly activate motor neurons in the spinal cord, causing the quadriceps muscles to contract and extend the leg.
What is a reflex made of?
'Made of' is difficult to say, but the reflex arc includes within it Sensory Nerve Fibres, Receptor Cells and Sensory Neurones. The effect of these is to bypass the normal interface with the central nervous system, so that the body responds instantly to potentially dangerous stimuli.
What two type of cell populations make up neural tissue?
Neurons and glial cells are the two main cell populations that make up neural tissue. Neurons are responsible for transmitting electrical impulses, while glial cells provide support and protection to neurons.
What occur during reflex arc?
During a reflex arc, sensory receptors detect a stimulus and send a signal through a sensory neuron to the spinal cord. In the spinal cord, the signal is processed and a response is generated quickly through a motor neuron to the effector organ, causing a reflex action (such as pulling your hand away from a hot object) without involving the brain.
What tissue makes up the majority of the brain and spinal cord?
The majority of the brain and spinal cord is made up of nervous tissue, specifically neurons and glial cells. Neurons transmit electrical signals, while glial cells provide support, protection, and nutrition for the neurons.
WHAT IS MONOSYNAPTIC REFLEX ARC?
The answer is that the monosynaptic reflex arc links up with the duosynaptic reflex arc and forms a hypothalamus gland and forms a bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbgggggggggggggggggggggggggggggggggggggggggggggggggggggggbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
What is an example of a monosynaptic reflex?
The knee-jerk reflex is an example of a monosynaptic reflex. When the patellar tendon is tapped, sensory neurons directly activate motor neurons in the spinal cord, causing the quadriceps muscles to contract and extend the leg.
What is the difference between a reflex arc and a normal nerve impulse?
A reflex arc doesn't go all the way up to the brain. Thus it NEVER becomes part of the thought process.
How many speed of impulse in reflex arc?
The speed of impulse in a reflex arc can vary, but it is usually very fast, allowing for quick responses to stimuli. In general, impulses can travel at speeds of up to 100 meters per second along myelinated nerve fibers.
What is the smallest functional unit of the nervous system?
The neuron is the smallest functional unit of the nervous system. It is responsible for transmitting information through electrical and chemical signals. Neurons make up the basic building blocks of the nervous system and are essential for communication within the brain and between the brain and the rest of the body.
Why does the knee-jerk reflex still function in a person with a severed spinal cord and why is there no sensation of the stimulus?
Reflexes don't go up the spinal cord to the brain, as the body wants to remove itself from the stimulus as quickly as possible. So, it goes in a loop, called a reflex arc, where the sensory neurons detect the tap and the stimulus is so strong it immediately jumps to the motor neurons to make the leg jerk. It all happens in the spinal cord. However, you don't feel it because the nerves going up (afferent) and down (efferent) the spinal cord to the brain have been severed and so the brain doesn't detect it.
What types of neurons make up the peripheral nervous system?
Sensory and Motor neurons
What is a reflex arc made of?
A reflex arc is made up of five components: a receptor, a sensory neuron, an integration center (usually in the spinal cord), a motor neuron, and an effector. The arc allows for a rapid response to a stimulus without conscious thought.
What do you call cells that make up your nerves?
neurons
What is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?
The speed of conduction through a reflex arc is slower than the speed of conduction of an action potential along an axon because a reflex arc involves multiple synapses and processing steps in the spinal cord or brain before generating a response, which takes more time. In contrast, in a single axon, action potentials can travel faster due to the myelin sheath that speeds up conduction.
How does the nervous system work when you accidentally dropped a ball pen on the floor and you pick it up?
if you drop a pen and quickly try to catch it that would be a proper example of a reflex ,which is different from an arc reflex which is what happens when you hit your knee and it jerks
How the nervous system works when you accidentally dropped a ball pen on the floor and you pick it up?
if you drop a pen and quickly try to catch it that would be a proper example of a reflex ,which is different from an arc reflex which is what happens when you hit your knee and it jerks
