Application Questions 1. Check the appropriate boxes for each reflex (Note: Each

Question

Application Questions 1. Check the appropriate boxes for each reflex (Note: Each reflex will have three boxes checked and no more than three). Textbook: Pages 566-571, 618, 631 Reflex Cranial Spinal Somatic Autonomiclateral Contralatoral knoe jork ankle jerk Golgi tendon crossed- extensor pupillary consensual 2. The gastrocnemius muscle is innervated by the tibial nerve, which originates in spinal segments 31 and S2. The tbialis anterior muscle is innervated by the deep fibular nerve, which originates in spinal segments L4 and L5. Based on your knowledge of stretch reflexes and this information, name each specific camponent of the LEFT ankle jerk reflex Stretch insertion tendon on left gastrocnemius muscle Stimulus Receptor and its Location Afferent Nerve Integration Center Efferent Nerve Effoctor Response F2016

Explanation / Answer

Spinal reflex - These are monosynaptic reflexes where no information goes to brain.
Cranial reflexes - These reflexes involve brain and are multisynaptic.
Somatic - Skeletal muscles are involved.
Autonomic - Smooth muscles are involved.
Ipsilateral - Motor impulses are sent to the same side of body where sensation was percieved.
Contralateral - Motor impulses are sent to the opposite side of sensory perception.

1) Knee jerk is spinal, somatic and ipsilateral
2) Ankle jerk is spinal, somatic and ipsilateral.
3) Golgi tendon is spinal, somatic and ipsilateral.
4) Withdrawl reflex are spinal, somatic and contralateral
5) Pupillary eye reflex are cranial, autonomic and ipsilateral.
6) Consensual response is cranial, autonomous and contralateral.

Receptor and it's location - The muscle spindle of gastrocnemius muscle
Afferent nerve - Tibial nerve
Integration center - Present in synapse in spinal cord
Efferent nerve - Tibial nerve
Effector - Gastrocnemius
Response - Planter flexsion of dorsiflexed foot.

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