Who Wants to Be a Millionaire 50:50 POLL PHONE-A-FRIEND Who Wants to Be a Millionaire Doctor? Created by Terri Street for OKTechMasters © 2000 Adapted by Tom Gest, Anatomical Sciences, University of Michigan Medical School, 2004 Questions developed by Charisa Roy, University of Michigan Medical School Class of 2007

1,000,000 500,000 250,000 125,000 64,000 32,000 16,000 8,000 4,000 2,000 1,000 500 250 100

$100 A. B. C. D.

$100 A. B. C. D.

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Which of the following acts primarily as a highway for information traveling to and from the brain? A. sympathetic chain B. spinal cord C. sensory nerves D. peripheral nerves

Which of the following acts primarily as a highway for information traveling to and from the brain? A. sympathetic chain B. spinal cord

The spinal cord carries impulses to and from the brain. Back to Board

The spinal cord runs through what vertebral opening? A. intervertebral foramina B. inferior vertebral notch C. vertebral foramina D. superior vertebral notch

The spinal cord runs through what vertebral opening? A. intervertebral foramina C. vertebral foramina

The spinal cord runs through the vertebral canal, formed by all of the vertebral foramina. Back to Board

Denticulate ligaments are specializations of what meningeal membrane? A. dura mater B. arachnoid mater C. pia mater D. subdural mater

Denticulate ligaments are specializations of what meningeal membrane? A. dura mater C. pia mater

The denticulate ligament is a scallop-shaped lateral extension of the pia mater. Back to Board

In the cervical vertebrae and the thoracic vertebrae, spinal nerves corresponding to the vertebrae emerge where, respectively (excluding T1)? A. above, below B. above, above C. below, above D. below, below

In the cervical vertebrae and the thoracic vertebrae, spinal nerves corresponding to the vertebrae emerge where, respectively (excluding T1)? A. above, below C. below, above

Because there are 8 cervical spinal nerves, they pass over their vertebra; all others pass under. Back to Board

The cauda equina typically lies in the lumbar cistern below which vertebral level in an adult? B. S2 C. T12 D. L1/L2

The cauda equina typically lies in the lumbar cistern below which vertebral level in an adult? D. L1/L2

The spinal cord ends at L1/2 level, and the cauda equina is the collection of nerve rootlets below it. Back to Board

A. cervical and thoracic What spinal cord enlargements contain upper and lower limb motor neurons? A. cervical and thoracic B. cervical and lumbar C. thoracic and lumbar D. thoracic and sacral

What spinal cord enlargements contain upper and lower limb motor neurons? B. cervical and lumbar C. thoracic and lumbar

The cervical enlargement supplies the upper limbs, while the lumbar enlargement supplies the lower limbs. Back to Board

Where, in the spinal cord, are the motor neurons that innervate skeletal muscle? A. lateral horn B. dorsal horn C. ventral horn D. medial horn

Where, in the spinal cord, are the motor neurons that innervate skeletal muscle? A. lateral horn C. ventral horn

Motor neuron cell bodies lie in the ventral horn, while autonomic neuron cell bodies lie in the lateral horn and sensory fibers synapse on cells in the dorsal horn. Back to Board

How many vertebrae and spinal nerves, respectively, are in the body?

How many vertebrae and spinal nerves, respectively, are in the body?

There are 33 vertebrae, 31 pairs of spinal nerves, and 12 pairs of cranial nerves. Back to Board

What type of fibers are carried by the dorsal roots and rootlets? A. motor B. efferent C. afferent D. sympathetic

What type of fibers are carried by the dorsal roots and rootlets? B. efferent C. afferent

Dorsal rootlets and roots carry afferent, sensory fibers to the dorsal horn, where they synapse. Back to Board

What types of fibers are found within every spinal nerve? A. motor B. sensory C. motor and sensory D. sympathetic

What types of fibers are found within every spinal nerve? A. motor B. sensory C. motor and sensory D. sympathetic

Every spinal nerve carries both motor and sensory fibers. Back to Board

Axons innervating deep back muscles and muscles of the limb and trunk travel in what rami, respectively? A. ventral, dorsal B. ventral, ventral C. dorsal, dorsal D. dorsal, ventral

Axons innervating deep back muscles and muscles of the limb and trunk travel in what rami, respectively? C. dorsal, dorsal D. dorsal, ventral

Deep back muscles are innervated by dorsal primary rami, while ventral rami innervate limb muscles. Back to Board

Which meningeal membrane layer forms the sleeves for the ventral and dorsal roots as they exit the intervertebral foramina? A. dura mater B. arachnoid mater C. pia mater D. subarachnoid mater

Which meningeal membrane layer forms the sleeves for the ventral and dorsal roots as they exit the intervertebral foramina? A. dura mater B. arachnoid mater

Dura mater forms a sleeve around nerve rootlets as they pass into the intervertebral foramen. Back to Board

Which of the following is NOT a mixed nerve? A. spinal nerve B. ventral rami C. dorsal rami D. ventral root

Which of the following is NOT a mixed nerve? B. ventral rami D. ventral root

Roots are only either sensory or motor, while rami and spinal nerves are both, or mixed. Back to Board

Which structure is the most caudal to the foramen magnum? A. conus medullaris B. lumbar enlargement C. cauda equina D. coccygeal ligament

Which structure is the most caudal to the foramen magnum? C. cauda equina D. coccygeal ligament

The coccygeal ligament extends from the end of the dural sac, while lumbar enlargement, conus medullaris, and cauda equina lie within the dural sac. Back to Board

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