SCC Cole Spinal Cord and Spinal Nerve Anatomy Lab

Terms	Definitions
Nerve	a bundle of axons in the PNS
Vertebral Canal	Name this space: the canal in successive vertebrae through which the spinal cord passes
Cervical Enlargment	Identify A:In the neck region, a thickening in the spinal cord that supplies the nerve to the upper limbs
Lumbar Enlargement	Identify B: an enlargement of the spinal cord that gives rise to the nerves of the pelvic region and lower limbs
Cauda Equina	Identify C: collection of spinal nerves below the end of the spinal cord
Medullary Cone	Identify D: cord tapers to a point inferior to lumbar enlargement
Terminal Filum	Identify A: fibrous strand of pia mater that extends beyond the medullary cone within the lumbar cistern
Posterior Median Sulcus	Identify J:, shallow longitudinal groove on the dorsal surface of the spinal cord
Anterior Median Fissure	Identify K:
Central Canal	Identify A: The narrow cavity in the center of the spinal cord that is continuous with the fluid-filled ventricles of the brain.
31 Pairs	How many spinal nerves are there?
Cervical Nerve	Identify this group of nerves: any of eight pairs of spinal nerves emerging from the cervical section of the spinal cord
Thoracic Nerve	Identify B: any of twelve pairs of spinal nerves emerging from the thoracic region of the spinal cord
Cervical Nerve	Identify A
Lumbar Nerve	Identify C:, any of five pairs of spinal nerves emerging from the lumbar section of the spinal cord
Sacral Nerve	Identify D: any of five pairs of spinal nerves emerging from the sacral region of the spinal cord
Coccygeal Nerve	Identify E: the lowest pair of spinal nerves
Dorsal Nerve Root	Idenyify C: The branch off each side of the spinal cord between each set of adjacent vertebrae that conducts sensory impulses into the spinal cord from the periphery of the body.
Dorsal Root Ganglion	Identify D: a nodule on a dorsal root that contains cell bodies of neurons in afferent SPINAL NERVES.
Posterior Horn	Identify E:
Ventral Nerve Root	The branch off each side of the spinal cord between each set of adjacent vertebrae that conducts motor impulses from the spinal cord to effectors in the periphery of the body.
Dorsal Ramus	Identify A: NOTE: observe shape of grey matter for orientation
Ventral Ramus	Identify B:
Meningeal Ramus	One of the first three branches of each spinal nerve, this smallest branch turns back through the intervertebral foramen to supply the spinal meninges and the blood vessels of the spinal meninges.
Rami Communicantes	Identify 16:
Sympathetic Ganglion	Identify 10: enlargments of sympathetic trunk contains postganglionic sympathetic cell bodies
Anterior Horn	Identify H:
Gray Commisure	Identify C: structure that connects the right and left parts of the gray matter of the spinal cord
Posterior Column	Identify L: between the posterior gray horns and the posterior median sulcus
Lateral Column	Identify M: White matter on either side between the anterior and posterior columns
Anterior Column	Identify N: lies between the anterior gray horns and the anterior median fissure. -interconnected by the anterior white commisure.
Denticulate Ligament	Identify 21: ligaments between spinal nerves
Denticulate Ligament	Identify A: Ligaments between spinal nerves
Spinal Meninges	Surround the spinal cord and are continuous with the cranial meninges.
Dura Mater	Identify 6:
Subdural Space	Identify B (space):
Arachnoid Space	Identify A (space):
Pia Mater	Identify E (space):
Epineurium	Identify A: outermost layer of connective tissue on the spinal nerve; a dense network of collagen fibers
Perineurium	Identify B: coarse connective tissue that bundles fibers into fascicles
Endoneurium	Identify C: delicate connective tissue around individual nerve fibers in nerve
Cervical Plexus	a nerve plexus lying beneath the sternocleidomastoid muscle
Phrenic Nerve	Identify the nerve that the arrow is pointing to: stimulates the diaphragm and causes it to contract
Brachial Plexus	a network of nerves formed by cervical and thoracic spinal nerves and supplying the arm and parts of the shoulder
Radial Nerve	Identify 5: largest branch of the brachial plexus
Ulnar Nerve	Identify 4:, a nerve running along the inner side of the arm and passing near the elbow
Lumbar Plexus	a plexus of nerves formed by the ventral branches of the first four lumbar nerves
Femoral Nerve	Identify A: innervates quadriceps and skin of anterior thigh and medial surface of leg
Sacral Plexus	a nerve plexus formed by the 4th and 5th lumbar and 1st, 2nd, 3rd sacral nerves
Sciatic Nerve	Identify A: arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves