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Ascending Pathways in the Body and Head Quiz

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Ascending Pathways in the Body and Head Quiz

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Questions and Answers

Where do the first-order neurons of the dorsal-column medial lemniscus pathway terminate?

Medulla (correct)

Cerebellum

Thalamus

Spinal cord

What is the function of the dorsal columns in the somatosensory system?

Pain perception

Muscle coordination

Temperature sensation

Touch and vibration perception (correct)

Where are the second-order neurons of the dorsal-column medial lemniscus pathway located?

Pons

Caudal medulla (correct)

Cerebellum

Hypothalamus

Which structure divides the dorsal column into the fasciculus gracilis and fasciculus cuneatus?

Intermediate sulcus Signup and view all the answers

What happens as a result of crossing over in the caudal medulla in the dorsal-column medial lemniscus pathway?

Left side of the brain receives sensory input from the right side of the body Signup and view all the answers

Which type of stimuli does discriminative touch involve?

Mechanical stimuli Signup and view all the answers

Which of the following is NOT a mechanoreceptor of the skin involved in discriminative touch?

Langerhans cells Signup and view all the answers

What is the primary function of conscious proprioception?

Sensing limb position and movement Signup and view all the answers

Which receptors are involved in detecting vibration?

Pacinian corpuscles Signup and view all the answers

Which pathway is responsible for transmitting discriminative touch information to the brain?

Dorsal column-medial lemniscus pathway Signup and view all the answers