Check the patellar reflex of a classmate by using a reflex hammer to strike their patellar ligament while the knee is flexed. Which muscles contracted when the patellar reflex was tested? What nerve is involved in the afferent and efferent actions?  How does muscle fatigue influence your observations?

A tap on the patellar tendon at the knee joint is used to test the knee-jerk reflex. All of the followings are correct, except ---------------------.  The reflex starts with the 1a sensory neurons of the muscle spindle  There is an excitatory stimulus to the motor pool of the extensor muscle There is a stimulation of the excitatory interneuron of the flexor muscle Excitation of the extensor muscle fibers causes the knee extension Muscle contraction depends on coordination between motor pools of antagonistic muscles

A half-second stimulation in the motor cortex produces what kind of result?A. Isolated muscle twitchesB. Contraction of a particular combination of musclesC. Contraction of whatever muscles are necessary to produce a particular outcomeD. Contractions of different muscles that vary unpredictably from one trial to another

Muscle spindles are located in ________ and cause muscle to __________ in the stretch reflex. Question options: A muscles; relax B tendons; contract C muscles; contract D tendons; relax

What system will reset the membrane potential after an action potential has moved along the sarcolemma?     acetylcholine receptors     Na+-K+ pump     desmosomes     voltage-gated Ca2+ channels

How do muscle spindles differ from Golgi tendon organs?

Neuroscience: Define end plate potentials and describe how their propagation leads to a musclecontraction   Please provide pictures with your explanation.  This should help me prepare for an upcoming exam. I need to understand what is going and I'm a visual person!!

V. Triceps Jerk a Reflex that assesses the nervous tissue between (and including) the C6, C7, and C8 nerve roots. b. It can be elicited by supporting your partner's arm with the elbow flexed at a 90° angle, sharply striking the posterior surface of the upper arm approximately 2 inches above the olecranon (bony "tip" of the elbow). c. Normal response: The triceps should twitch, and the elbow should extend. Label the feedback mechanism for this reflex. THEREH Binepe Incepa

T or F. Motor signals originating in the cortex can't interfere with motor reflex response? T or F. Reflex functions are exclusive only for responses within the level of the spinal cord? T or F. Internuerons can simultaneously inhibit the transmission of nerve impulses into the antagonistic muscle on the ipsilateral side of the body and to the same muscle on the contralateral side of the body?

Would you expect to find larger motor units in the postural muscles of the back or the muscles of the hand? Explain your answer