Spotter Quiz 4

Question 1

Dura Mater (tough mother)

Answer 1

Outermost of the meninges; dense irregular connective tissue

Question 2

Epidural Space

Answer 2

A space between the dura and the bone of the vertebral canal

Question 3

Epidural Venus Plexus

Answer 3

Epidural space containing epidural fat and network of veins

Question 4

Arachnoid Mater (spidery mother)

Answer 4

The middle meninx; attached to the inner surface of the dura mater around the brain and the spinal cord; has a cobweb like consistency

Question 5

Subarachnoid Space

Answer 5

Space between the arachnoid mater and the pia mater in which cerebrospinal fluid circulates

Question 6

Pia Mater (soft mother)

Answer 6

Innermost layer of the meninges; not distinguishable at the gross anatomical level; holds the cerebral and spinal arteries and veins into place; adheres to the convolutions of the gyri and sulci of the cerebral hemisphere

Question 7

Filum Terminale

Answer 7

Thin strand of pia that extends inferiorly from the conus medullaris of the spinal cord to anchor the spinal cord to the sacrum and coccyx

Question 8

Denticulate Ligaments

Answer 8

Extensions of pia mater that extend laterally from spinal cord; these “teeth” of pia mater extend across the subarachnoid space through arachnoid mater and anchor the spinal cord to the dura mater.

Question 9

Falx Cerebri

Answer 9

Fold of the inner layer of the cranial dura; divides the cerebral hemispheres; extends from crista galli anteriorly to the tentorium cerebelli and internal occipital crest

Question 10

Tentorium Cerebelli

Answer 10

Spans between the petrous ridges of the temporal bone, along the occipital bone to the midline where it attaches to the falx cerebri

Question 11

Tentorial Insure

Answer 11

Opening in the tentorium cerebelli for passage of the midbrain

Question 12

Spinal Cord

Answer 12

Continuous with the medulla oblongata of the brain

Question 13

Cervical and Lumbosacral Enlargements

Answer 13

Regions of the spinal cord with large cross-sectional areas; innervate the upper and lower limbs, respectively

Question 14

Conus Medullaris

Answer 14

Pointed inferior end of the spinal cord

Question 15

Anterior Median Fissure

Answer 15

longitudinal groove running vertically along the anterior midline of the spinal cord

Question 16

Posterior Median Sulcus

Answer 16

Longitudinal groove running vertically along the posterior midline of the spinal cord

Question 17

Gray Matter

Answer 17

Forms the H-shaped central region; made up primarily of neuronal cell bodies

Question 18

White Matter

Answer 18

Surrounds the central region of gray matter and consists of ascending and descending tracts; tracts are composed of bundles of myelinated axons

Question 19

Spinal Nerves

Answer 19

Nerves of the PNS; contain somatic sensory and motor, visceral sensory and motor fibers; 31 pairs

Question 20

Dorsal and Ventral Roots

Answer 20

Join to form short spinal nerves which exit the vertebral canal through the intervertebral foramina

Question 21

Dorsal Roots

Answer 21

Somatic and visceral sensory neurons; cell bodies located in the dorsal root ganglia

Question 22

Ventral Roots

Answer 22

Somatic motor neurons; cell bodies located in the gray matter of the anterior (ventral) horn of the spinal cord