PNS- spinal nerves

Anatomy 1 with Sf at University of California - Los Angeles

About this deck

By: Jearelly Pinedo
Created: 2011-04-24
Size: 36 flashcards
Views: 8

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PNS links ______ to ______

Body to world

Sensory receptors serve to pick up _______ from inside or outside body

stimuli

Nerves are bundles of __________ while ganglia are bundles of peripheral neuron _________

peripheral axons

cell bodies

Motor endings are where axon terminals of motor neurons innerbate __________

effectors

__________ pick up sensory stimuli and initiate sensory axons

Receptors

Exteroreceptors (Location and detect?)

Outside body stimuli

Things you touch

Interoreceptors (Location and detect?)

Stimuli from internal viscera

Detect: taste, tissue stretching, temperature, changes in chemical

Proprioceptors (Location and detect?)

In skeletal muscles/joints/tendons

Detect: degree of stretch

What stimulus do mechanoreceptors respond to ?

MECHANICAL FORCES
touch
pressure
stretch
vibration

This kind of receptor is a kind of mechanoreceptor that responds to blood pressure

Baroreceptor

Thermoreceptors respond to changes in body _________, while chemoreceptors respond to _________ changes are found in _______

Temperature

Chemicals (CO2 O2 pH)
-medulla ob, carotid, aoritc arch

_______receptors respond to light and are located in ________

photo

retina

Nocioceptors respond to __________ stimuli that result in _______

harmful

pain

__________ nerves are primarily found in skin and respond to temperature and pain, while ________ are characterized by their enclosure in connective tissue

Free nerve ending

Encapsulated

Which segments are enlarged in the spinal cord? and why?

Cervial and Lumbar; innervate limbs

Cervical contain _____, Thoracic _____, Lubar _____. Sacral _____, and Coccygeal ____ nerve pairs

8
12
5
5
1

What is the name of the roots on inferior end of spinal cord?

Cuada Equina

What is the name of the tapering on inferior end of spinal cord?

Conus Medularis

Dorsal root carries ONLY ______ fibers and the cell bodies are found in the _______ root ganglion

Sensory

Dorsal

Ventral root contains ________ fibers, which arise from anterior _______ column

motor

gray

Spinal Nerves branch off into ________ and _________ ramus

Dorsal and Ventral

T or F: The dorsal rami carries only sensory and ventral rami carries only motor info

FALSE, both carry both Sensory AND Motor

The rami communicantes branch off the _______ and come down into the _______ trunk

ventral ramus

sympathetic trunk

Dorsal Rami innervate ______ muscles in what kind of pattern?

back

neat, segmented--- horizontal strip of muscle and skin

Ventral Rami innervate primarily the ________ region and involved with _____ nerves

thoracic- muscle, skin, ab wall

intercostal nerves

What is the nerve plexus and where does it branch off?

a network of nerves; off the ventral ramus

Nerve plexi can be found in ______, _______, _____ & _______, but NOT in ______

cervical
brachial
lumbar
sacral

NOT THORACIC

The plexi can be found in cervical and thoracic

False; notttt in thoracic!

The major nerve of cervical is called the ____ and innervated _______

phrenic; diaphragm

_______ is the major nerve in the Lumbar region

femoral

Sciatic nerve is the major nerve in the ______ region

sacral

The Dermatore is a simply area of skin that is innervated by _____

branches of single spinal nerve

While the ______ innervates the skin of anterior lower limbs, the _______ innervates skin of posterior lower limbs

lumbar

sacral

Spinal and cranial nerves are both located in _____

PNS

What kind of fibers do spinal and canial nerves have?

Spinal -- BOTH; sensory and motor

Cranial-- S, M. or both

Cell bodies of cranial nerves are found in _______, while those of spinal nerves are found in _________

cranial ganglion

dorsal root ganglion

About this deck

By: Jearelly Pinedo
Created: 2011-04-24
Size: 36 flashcards
Views: 8

About StudyBlue

“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis