What effector muscle is involved in a calcaneal reflex?
The ankle jerk reflex, also known as the Achilles reflex, occurs when the Achilles tendon is tapped while the foot is dorsiflexed. It is a type of stretch reflex that tests the function of the gastrocnemius muscle and the nerve that supplies it.
What type of reflex is the triceps reflex?
deep tendon reflex
The triceps reflex, a deep tendon reflex, is a reflex as it elicits involuntary contraction of the triceps brachii muscle. It is initiated by the Cervical (of the neck region) spinal nerve 7 nerve root (the small segment of the nerve that emerges from the spinal cord).
What is the effector muscle that is involved in the flex of the plantar reflex?
20 Cards in this Set
| a withdrawal reflex employs … | motor neurons in conjunction with sensory and motor neurons |
|---|---|
| triceps reflex (effector muscle involved) | triceps |
| flexion (curling) of the toes | plantar reflex (response observed) |
| plantar reflex (effector muscle involved) | muscles in the toes |
What is the effector muscle in the bicep reflex?
Specifically, the test activates the stretch receptors inside the biceps brachii muscle which communicates mainly with the C5 spinal nerve and partially with the C6 spinal nerve to induce a reflex contraction of the biceps muscle and jerk of the forearm.
Is the effector muscle of the patellar reflex?
The quadriceps femoris is the effector muscle of the patellar reflex. The dorsal roots of spinal nerves contain the axons of the motor neurons. The normal patellar reflex response involves extension of the leg at the knee joint.
What nerve does triceps reflex test?
The triceps reflex can be obtained by tapping the distal tendon at the posterior aspect of the elbow, with the elbow relaxed at about 90° of flexion. This tests the C7-C8 nerve roots.
Which part of the reflex hammer will you use to test the calcaneal reflex?
Which part of the reflex hammer will you use to test the calcaneal reflex? The broad rubber side.
What is the effector involved in the knee jerk reflex?
effector muscle in the patellar knee jerk? The quadriceps femoris is stretched, stimulating stretch receptors (muscle spindles) within the muscle. Motor impulses travel out of the cord on nerve fibers that lead to the quadriceps femoris.
Is the bicep muscle an effector or receptor?
The central nervous system is a term for the brain and spinal cord. Again, the term effector namely refers to muscles and glands. Muscles include skeletal muscles which are namely under voluntary control. Skeletal muscles are the ones that help you move, such as the biceps, quadriceps, triceps, and hamstrings.
What is the effector involved in the Ciliospinal reflex?
The ciliospinal reflex is pupillary dilation in response to noxious stimuli, such as pinching, to the face, neck, or upper trunk.. Sympathetic fibers from the upper thoracic and lower cervical spinal cord make up the efferent portion of the ciliospinal reflex.
What causes deep tendon reflexes in normal people?
Deep Tendon Reflexes – Clinical Methods – NCBI Bookshelf In a normal person, when a muscle tendon is tapped briskly, the muscle immediately contracts due to a two-neuron reflex arc involving the spinal or brainstem segment that innervates the muscle.
What are the components of the reflex arc?
The lower motor neuron components of the reflex are the peripheral nerve and spinal segment while the upper motor neuron component innervating the reflex arc is the descending corticospinal tract. Pathology in one or the other produces different changes in the reflex (see clinical significance below).
What are the features of the reflex response?
Note the following features of the reflex response: Amount of hammer force necessary to obtain contraction Velocity of contraction Strength of contraction Duration of contraction Duration of relaxation phase Response of other muscles that were not tested.
How does the knee jerk reflex affect the hamstring?
For instance, at the knee, the quadriceps opposes the hamstring, so when the knee jerk reflex is elicited it inhibits the hamstring motor neurons while the quadriceps are stimulated to contract.