Lab 2 Anatomy

BIO 290L JMU

Sensory fibers in association to central nervous system

Afferent impulses, going towards CNS

Motor fibers in association to central nervous system

Efferent impulses, leaving CNS

Somatosensory

sensation from skin

Viscerosensory

Sensation from viscera

Somatomotor

Voluntary control of skeletal muscle

Visceromotor

Autonomic control of smooth/cardiac muscle and glands

What is 1, 2, & 3?

What neurons do 2 & 3 carry?

Dorsal horn, somatosensory

Lateral horn, visceromotor

Ventral horn, somatomotor

What is 4 and 5?

Gray matter

White matter

What is 6?

Ventral root

What is 7? What neurons lie here?

Dorsal root

Dorsal root ganglia, sensory neurons

What is 8?

Spinal nerve

What is 9 and 10?

Dorsal rami

Ventral rami

What is 11?

Sympathetic trunk ganglia

What are arrows 1, 2, & 3?

Dura mater

Arachnoid Mater

Pia mater

What is the arrow pointing to?

Subarachnoid space

Sympathetic nervous system…

Synapses at sympathetic trunk ganglia and then effector muscle

What is the arrow pointing to?

Spinal nerve

What are the top and bottom arrow pointing to?

Dorsal rami

Ventral rami

What is are left and right arrow pointing to?

Dorsal root

Dorsal root ganglia

What is the arrow pointing to?

Conus Medullaris

What are the arrows pointing to?

Dorsal and Ventral roots

What is the arrow pointing to?

Cauda equina

What are the arrows pointing to?

Filum terminale

What are the arrows pointing to?

Sympathetic trunk ganglia

Where does the spinal cord extend through?

Vertebral canal

Rest and digest

Parasympathetic

Fight or flight

Sympathetic