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What type of reflex can protect the foot when a painful
stimulus is sensed?
a. stretch reflex
b. gag reflex
c. withdrawal reflex
d. corneal reflex
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- Which statement is correct about reflexes? a. The patellar reflex tests the S1–S3 spinal nerve segments. b. A hypoactive reflex may indicate damage to the neuromuscular junction. c. The more hyperactive the reflex, the healthier the individual. d. A normal biceps reflex response is extension of the elbow when the biceps tendon is tapped.Distinguish between the following types of reflexes: A) Somatic vs. Visceral (autonomic) reflex B) Monosynaptic vs. Polysynaptic reflex C) Ipsilateral vs. Contralateral vs. Bilateral (consensual) reflex D) Cranial vs. Spinal reflexAll of the following are true concerning reflex arcs EXCEPT A.they involve a few neurons and directly enter and immediately leave the spinal cord B.they are used to prevent harm C.they are subconscious and automatic D.they only use the PNS and not the CNS
- Fill in the blank: Effectors of a reflex arc are glands and _______________________.What is the difference between stretch reflexes and superficial cord reflexes?Suppose a person has spinal cord damage at the cervical level. would this stop the knee-jerk reflex? How would it affect the plantar reflex? Explain
- The superior colliculi are twin bodies within the corpora quadrigemina of the midbrain that are involved in a. visual reflexes. b. auditory reflexes. c. relaying of cutaneous information. d. release of pituitary hormones.The dilated blood vessels seen in “bloodshot” eyes are vessels of:- a. the retina. b. the cornea. c. the conjunctiva. d. the sclera. e. the choroidDescartes' version of the reflex arc was important for understanding the brain's role in sensation, perception and reactivity. Which feature of Descartes' reflex arc is comparable to neurotransmission through motor, inter, and sensory neurons in the present day reflex circuit? A) body activity B) External stimulus C) Valvules Opening D) Nerve stimulation
- Fill in the blank: Interneurons in a withdrawal reflex are located in the _______________________.A functional reflex requires a. only a sensory neuron and a motor neuron. b. a sensory neuron, the thalamus, and a motor neuron. c. the cerebral cortex and a motor neuron. d. only the cerebral cortex and the thalamus.Which of these tracts carries motor signals destined for the postural muscles? a. the gracile fasciculus b. the cuneate fasciculus c. the spinothalamic tract d. the vestibulospinal tract e. the tectospinal tract