Module 3 - Lecture 2

Flashcards covering the anatomy of the spinal cord and peripheral nervous system.

Afferent Division

Information about the internal and external environment travels into the central nervous system.

Integration

Information is integrated and processed after sensory input.

Motor Output

Activation of effector organs produces a response.

Periosteal Layer

Outer layer of the dura mater, fused to bone.

Meningeal Layer

Inner layer of the dura mater.

Arachnoid Mater

Attaches to pia; cerebral spinal fluid (CSF) & blood vessels in subarachnoid space.

Filum Terminale

Anchors spinal cord to coccyx.

Dorsal root

Sensory input to spinal cord.

Ventral root

Motor (efferent) output from spinal cord.

Ganglia

Collections of cell bodies in the PNS.

Plexus

Branching network of nerves.

Dorsal Rami

Innervation of skin and back muscles (smaller).

Ventral Rami

Innervation of the rest of trunk and limbs (larger).