a&p test 4 key terms pt. 2

Five Basic Components of all Reflex Arcs

• Receptor

• Sensory neuron

• Integration center

• Motor neuron

• Effector

What’s in the receptor level

• Free nerve endings

• Muscle spindle

• Joint kinesthetic

III (3) oculomotor

Constricts pupils

VII & IX (7 & 9)

Stimulate saliva and tears

Main control

Hypothalamus & medulla

Subarachnoid space

Subdural space

Epidural space

Pia mater

Arachnoid mater

Dura mater

Bone of vertebra

Dorsal root ganglion

Body of vertebra

Perineurium

Nerve fibers

Blood vessel

Fascicle

Epineurium

Dorsal median sulcus

Dorsal horn

Gray commissure

Ventral horn

Lateral horn

Central canal

Ventral median fissure

Pia mater

Arachnoid mater

Spinal dura mater

Ventral root (derived from several ventral rootlets)

Spinal nerve

Dorsal root ganglion

Dorsal root (fans out into dorsal rootlets

Laleral tuniculus

Ventral funiculus

Dorsal funiculus

Spinal meninges group

• Pia mater

• Arachnoid mater

• Dura mater

Gray matter group

• Gray commissure

• dorasl horn

• ventral horn

• Lateral horn

• White columns

• Dorsal funiculus

• Ventral funiculus

• Lateral funiculus