Anatomy of the Spinal Cord Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following arteries supplies the upper two-thirds of the spinal cord?

  • Lumbar arteries
  • Anterior spinal artery (correct)
  • Lateral sacral arteries
  • Posterior intercostal arteries

Which vertebral venous plexus is found externally?

  • External vertebral venous plexus (correct)
  • Intervertebral venous plexus
  • Basal vertebral venous plexus
  • Internal vertebral venous plexus

Which spinal cord region is more prone to herniation due to its mobility?

  • Thoracic
  • Lumbar
  • Sacral
  • Cervical (correct)

Which of the following statements about GVE fibers is TRUE?

<p>They carry sensory information from organs to the spinal cord. (A)</p> Signup and view all the answers

Which dermatome corresponds to the thumb?

<p>C6 (D)</p> Signup and view all the answers

Where does the C8 spinal nerve exit the vertebral canal?

<p>Between C7 and T1 vertebrae (D)</p> Signup and view all the answers

What is the name of the bundle of spinal nerve roots that extend inferiorly from the end of the spinal cord?

<p>Cauda equina (D)</p> Signup and view all the answers

Which of the following spinal cord segments is responsible for innervating the diaphragm?

<p>C3 (B)</p> Signup and view all the answers

What is the name of the fibrous structure that extends from the conus medullaris to the coccyx?

<p>Filum terminale (B)</p> Signup and view all the answers

Which of the following refers to an enlargement of the spinal cord where nerve roots for the upper limbs originate?

<p>Cervical enlargement (B)</p> Signup and view all the answers

Which of the following statements is TRUE about the spinal cord?

<p>Each spinal nerve segment is associated with a pair of dorsal and ventral roots. (B)</p> Signup and view all the answers

Which of the following is NOT a key function of the spinal cord?

<p>Generating thoughts and emotions (C)</p> Signup and view all the answers

Which of the following spinal cord segments corresponds to the sacral spinal nerve that is the largest?

<p>S1 (C)</p> Signup and view all the answers

Which of the following statements about the Nucleus dorsalis (Clarke's column) is TRUE?

<p>It receives proprioceptive information from neuromuscular and tendon spindles. (C)</p> Signup and view all the answers

What is the primary function of the intermediolateral group of cells in the spinal cord?

<p>Generating preganglionic sympathetic fibers. (D)</p> Signup and view all the answers

Which of the following structures is NOT found in the white matter of the spinal cord?

<p>Cell bodies of neurons (C)</p> Signup and view all the answers

What is the name of the sulcus that divides the posterior funiculus into the fasciculus gracilis and fasciculus cuneatus?

<p>Intermediate sulcus (B)</p> Signup and view all the answers

Which of these are the primary branches of the spinal nerves?

<p>Dorsal ramus and ventral ramus (D)</p> Signup and view all the answers

What is the function of the ventral root of a spinal nerve?

<p>Carrying motor commands from the spinal cord to muscles (D)</p> Signup and view all the answers

Which of the following is NOT a type of sensory information carried by General Somatic Afferent (GSA) fibers?

<p>Visceral sensation (B)</p> Signup and view all the answers

What is the primary function of the dorsal root ganglion?

<p>Containing the cell bodies of first-order sensory neurons (A)</p> Signup and view all the answers

Flashcards

GVE Fibers

General visceral afferent fibers carrying information from the body to organs.

Dermatomes

Areas of skin mainly supplied by a single spinal nerve root.

C6 Dermatome

Dermatome area corresponding to the thumb.

Arterial Supply of Spinal Cord

Includes posterior and anterior spinal arteries, reinforced by segmental arteries.

Signup and view all the flashcards

Herniation

Displacement of disc material; often occurs between mobile and immobile regions of spine.

Signup and view all the flashcards

Nucleus dorsalis (Clarke’s column)

A spinal nucleus located in C8 to L3, involved in proprioception.

Signup and view all the flashcards

Visceral Afferent Nucleus

Nucleus located lateral to Clarke's column, involved in visceral sensory inputs.

Signup and view all the flashcards

Intermediolateral group of cells

Preganglionic sympathetic neurons located from T1 to L2/L3 in the lateral horn.

Signup and view all the flashcards

White matter parts

Three major sections of spinal white matter: posterior, lateral, anterior columns.

Signup and view all the flashcards

Dorsal Root

Sensory nerve root carrying information to the spinal cord.

Signup and view all the flashcards

Ventral Root

Motor nerve root carrying information from the spinal cord to muscles.

Signup and view all the flashcards

Dorsal Root Ganglion

Collection of cell bodies for first order neurons in the sensory pathway.

Signup and view all the flashcards

GSA and GVA fibers

General somatic afferent fibers (GSA) for sensory and general visceral afferent fibers (GVA) for organ sensory information.

Signup and view all the flashcards

Spinal Cord

A long tube of nerve tissue that connects the brain to the body.

Signup and view all the flashcards

Cauda Equina

A bundle of spinal nerve roots below the spinal cord, resembling a horse's tail.

Signup and view all the flashcards

Spinal Nerve Segments

31 segments of the spinal cord that correspond to pairs of spinal nerves.

Signup and view all the flashcards

Filum Terminale

Thread-like structure anchoring the spinal cord to the coccyx.

Signup and view all the flashcards

Spinal Nerve Roots

Dorsal and ventral roots that carry sensory and motor information, respectively.

Signup and view all the flashcards

Enlargements of Spinal Cord

Thickened regions in the spinal cord corresponding to nerve plexuses.

Signup and view all the flashcards

Cervical Spinal Nerves

8 pairs of nerves originating from the cervical region.

Signup and view all the flashcards

Central Canal

A small channel within the spinal cord filled with cerebrospinal fluid.

Signup and view all the flashcards

Study Notes

Spinal Cord

  • Spinal cord is a long, cylindrical structure that extends from the brainstem to the lumbar region
  • It is enclosed within the vertebral canal, extending from the foramen magnum to L1 or L2 vertebrae
  • Spinal cord segments give rise to spinal nerves through intervertebral foramina
  • All spinal columns are mixed nerves
  • Spinal Cord terminates in a cone-shaped structure called conus medullaris in adult
  • Cauda equina is in the inferior part of the spinal cord

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Spinal Cord Anatomy PDF

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser