Is the knee-jerk reflex an example of a somatic or an autonomic reflex?
Autonomic Reflexes Activity 1- Patellar reflex The patellar tendon reflex or knee-jerk reflex is a monosynaptic stretch reflex that assesses the nervous tissue between (and including) the L2 and L4 segments. It can be done by tapping the patellar ligament (just below the knee) with a reflex hammer.
What type of response is a knee jerk?
knee-jerk reflex, also called patellar reflex, sudden kicking movement of the lower leg in response to a sharp tap on the patellar tendon, which lies just below the kneecap.
What type of reflex is demonstrated by the knee jerk quizlet?
The patellar (knee-jerk) reflex is an example of what type of reflex? It is an example of a stretch reflex.
What is meant by knee-jerk reaction?
The idiom “a knee jerk reaction” means that you respond to something in an equally unthinking way. This figurative meaning of knee jerk came from the physical reflex — which is called a “patellar reflex” by doctors, and which was discovered and named in the 1870’s.
What is a reflex example?
Reflexes protect your body from things that can harm it. For example, if you put your hand on a hot stove, a reflex causes you to immediately remove your hand before a “Hey, this is hot!” message even gets to your brain. Even coughing and sneezing are reflexes.
Is knee jerk reflex somatic?
Reflexes can be categorized as either autonomic or somatic. Autonomic reflexes are not subject to conscious control, are mediated by the autonomic division of the nervous system, and usually involve the activation of smooth muscle, cardiac muscle, and glands. The knee jerk reflex is called a monosynaptic reflex.
Why is there a knee jerk reaction?
The normal knee-jerk or, “patellar jerk,” reflex is elicited when the knee is tapped below the knee cap (patella). Sensors that detect stretching of the tendon of this area send electrical impulses back to the spinal cord.
Which of these is an example of a reflex?
For example, if you put your hand on a hot stove, a reflex causes you to immediately remove your hand before a “Hey, this is hot!” message even gets to your brain. Other protective reflexes are blinking when something flies toward your eyes or raising your arm if a ball is thrown your way.
What type of reflex is the patellar knee-jerk reflex does it involve the brain what is the integration center for this reflex what type of receptor is involved?
monosynaptic
This type of reflex is a “withdrawal” reflex and is monosynaptic, meaning only one synapse has to be crossed between the sensory neuron and the motor neuron. This is the simplest reflex arc, and the integrating center is in the spinal cord.
What are the two types of reflexes and give examples?
What are the two types of reflexs and give examples Inborn (Intrinsic) reflex- predictable motor response to stimulus(don’t need to think about it) maintain posture, control visceral activities, spinal reflexes no help from brain Learned – results from practice/repetition riding a bike, driving a car etc
How does the tendon reflex work in muscle?
How does the tendon reflex work? -motor impulses sent to muscle with stretched tendon and impulses are damped. Muscle relaxes, reducing tension What is the flexor reflex?
How does the brain set the length of a muscle?
-Brain sets length of a muscle by commands sent via motor neurons -stretch reflex makes sure muscle stays at that length -maintain muscle tone in large postural muscles, and adjusts it reflexively- causes muscle contraction in response to increased muscle length (stretch)