quiz image

Anatomy of the Spinal Cord - Trinity College Dublin

CoolProtactinium avatar
CoolProtactinium
·
·
Download

Start Quiz

Study Flashcards

35 Questions

Where do many afferent nerve fibers entering the spinal cord terminate?

Dorsal horn

Which part of the spinal cord contains cell bodies of motion neurons innervating skeletal muscle?

Ventral horn

Which area within the spinal cord is well developed at cervical and lumbar levels in relation to limb innervation?

Ventral horn

Which part of the spinal cord is the main site of termination for primary afferent fibers?

Dorsal horn

Which horn of the spinal cord contains alpha and gamma motor neurons responsible for skeletal muscle innervation?

Ventral horn

Which neural pathways transmit sensory information from peripheral nerves to the cerebral cortex?

Ascending tracts

What structure is closely applied to the surface of the spinal cord and nerve roots?

Denticulate ligament

Which spinal nerve exits below the 7th cervical vertebra?

C8

What is the name for the leash-like arrangement of the lumbar and sacral roots below the termination of the spinal cord?

Cauda equina

Which meningeal layer invests the spinal cord like a loose-fitting bag?

Arachnoid mater

In which region do the spinal cord segments lie adjacent to the corresponding vertebral bodies?

Cervical

What projects out laterally from the denticulate ligament to tether the spinal cord to the arachnoid and dura?

Shelves

What type of information does the dorsal column-medial lemniscal pathway transmit?

Discriminative touch

Which pathway conveys nociception and non-discriminative touch information?

Spinothalamic pathway

What is proprioception related to?

Location and movement of joints

Which tracts are responsible for the conscious, voluntary control of body and face muscles?

Pyramidal tracts

What type of information does the corticospinal tract carry?

Information from the cerebral cortex to the spinal cord

Which descending motor pathway passes through the pyramids of the medulla?

Corticospinal tract

What type of information does the spinothalamic pathway convey?

Nociception and non-discriminative touch

Which ascending tracts are responsible for proprioception?

Spinocerebellar tracts

In the ascending tracts, which pathway is known for discriminative touch?

Dorsal column-medial lemniscal pathway

What type of sensory information do the ascending tracts transmit to the cerebral cortex?

Sensory information

Which ascending tract conveys information related to how hard someone is squeezing you?

Dorsal column-medial lemniscal pathway

What type of sensory information do the spinocerebellar tracts transmit?

Proprioception

Which ascending tract conveys unconscious sensory information related to joint location and muscle force?

Spinocerebellar tracts

Which ascending tract is responsible for conveying nociception and non-discriminative touch information to the cerebral cortex?

Spinothalamic pathway

Which ascending tract is known as the discriminative touch pathway?

Dorsal column-medial lemniscal pathway

Where do the ascending tracts transmit sensory information to?

Cerebral cortex

What is the main function of the pyramidal tracts in the major descending motor pathway?

Controlling voluntary movements of body and face muscles

Where does the majority (~85%) of the fibers from the corticospinal tract cross over in the brain stem?

Decussation of the pyramids

Which part of the body is controlled by the corticobulbar system in the descending motor pathway?

Face, head, and neck muscles

Where do the remaining 15% of fibers from the corticospinal tract cross over?

Spinal cord level of termination

Which type of neurons make up the corticobulbar tract?

Upper motor neurons

What type of movements are controlled by the pyramidal tracts in the major descending motor pathway?

Voluntary movements

Which part of the central nervous system do the pyramidal tracts mainly influence?

Spinal cord

Test your knowledge on the anatomy of the spinal cord with a focus on the afferent and efferent nerve fibers and the regions of the dorsal and ventral horns. Explore how these structures relate to the innervation of different parts of the body, particularly the upper and lower limbs.

Make Your Own Quizzes and Flashcards

Convert your notes into interactive study material.

Get started for free

More Quizzes Like This

Use Quizgecko on...
Browser
Browser