Neuro Unit 4 Exam

A peripheral nerve injury would impair signals on which part of the primary neuron?

• Peripheral receptor site in the skin

• Axon from receptor to cell body

• Cell body in the dorsal root ganglion

• Axon from cell body to the CNS

A patient lifts a cold can of soda to drink from. What peripheral receptors are activated? Select all that apply

• Mechanoreceptors

• Thermoreceptors

• Nociceptors

• Proprioceptors

• Chemoreceptors

The distance between two points of contact does not change as you move from the elbow to the fingertip. What does this tell you about your patient's sensation?

• All sensation components are functioning normally

• Sensation is impaired in the distal upper limb

• Proprioception is impaired in the upper limb joints

• Sensation is impaired in the proximal upper limb

A lesion is present in the mid-superior ventral medulla. Which of the following deficits are likely?

• Ipsilateral - Pain

• Contralateral - Temperature

• Ipsilateral - Proprioception

• Contralateral - Discriminative touch

• Ipsilateral - Motor

Loss of pain and temperature on the right lower extremity indicate a lesion to what structure?

• Anterior Medulla

• Left anterior spinal cord

• Right thalamus

• Posterior spinal cord columns

• Right pre-central gyrus

A patient suffers a middle cerebral artery stroke. Which of the following describe a potential deficit related to the spinothalamic (STHL) tract?

• Contralateral loss of proprioception from lower limb

• Ipsilateral loss of pain sensation in upper limb

• Contralateral loss of temperature sensation in upper limb

• Ipsilateral loss of upper limb tactile sensation

• Contralateral loss of upper and lower limb sensation

Which of the following describes the structure of the sensory tract pathways?

• Efferent 2 neuron pathway

• Afferent 3 neuron pathway

• Efferent pathway with upper and lower neurons

• Afferent pathway with upper and lower neurons

Which of the following receptors detect stimuli that exceeds normal ranges for temperature, pressure, stretch, or pH?

• Chemoreceptors

• Proprioceptors

• Thermoreceptors

• Nociceptors

• Mechanoreceptors

Awareness of two points of contact on the skin refers to what type of sensation?

• Vibration

• Crude touch

• Proprioception

• 2-point discriminatory fine touch

The ability to differentiate objects by weight, size, texture, shape without the input of vision is referred to as which of the following?

• Crude touch

• Proprioception

• Graphethesia

• Stereognosis