Question 1

Nerves included in PNS (3)- C,S & N/N/G-SR OCNS

Accepted Answer

Cranial Nerves, Spinal Nerves, neuron, Nerve, Ganglia and Sensory Receptors outside CNS

Question 2

All of the receptors in the PNS (6)- P,p,Pro,Pht,C,T

Accepted Answer

Pain, Pressure, Proceptor, Photo, Chemo, Thermo-Receptors

Question 3

What are the general sensory Receptors? (P,p,PRO)

Accepted Answer

1. Pain 2. Pressure 3. Proprioceptors

Question 4

Pain Receptor about- (2)

Accepted Answer

P-(fne)(mC)- Free Nerve Ending and it's Most Common.

Question 5

Pressure Receptors (2)

Accepted Answer

Meissner’s Corpuscle and Pacinian Corpuscle

Question 6

Meissner’s Corpuscle Pressure Receptor

Accepted Answer

It's a C fiber, light pressure and more superficial. Found in lips, and fingertips- it's what makes things beautiful  Mices are light...

Question 7

Pacinian Corpuscle Pressure Receptor

Accepted Answer

This is a B fiber. It's Deep Pressure.   Pacification requires pressure...

Question 8

Proprioceptors

Accepted Answer

It delivers position senses; a conscious/ Somatic sensory to the brain. "You don't need to have eyes opened to know about movement, you can sense it"; No need to see whether or not you have your legs or arms.

Question 9

How many pairs of Spinal nerves are there? In each section?

Accepted Answer

31 Pairs in total; (8)- C3; (12)T12; (5) L5; (5) Sacral; (1)Coccyx

Question 10

Spinal nerves leave the CNS share which two kinds of nerves?

Accepted Answer

Sensory Fiber(efferent) 2. Motor Fiber(efferent)

Question 11

Where is your neuron cell body in the sensory pathway?

Accepted Answer

in the ganglia

Question 12

Where is your neuron cell body in the motor pathway?

Accepted Answer

In the ventral gray horn

Question 13

Ventral Ramus (anterior) -Sensories and Motor

Accepted Answer

located on skin of anterior - Lateral Trunk, (UE, LE) sensories.  Motor for anterior muscle, UE/LE, Superficial back muscles .

Question 14

Dorsal Ramus (posterior)

Accepted Answer

Sensory in: Skin of back of head, neck and deep back muscles; Motor in: Deep muscles back

Question 15

what ramus is on the deep muscles in your back?

Accepted Answer

Dorsal Ramus- The back-deep-muscle

Question 16

What ramus is on the superficial muscle in your back?

Accepted Answer

The Ventral Ramus- superficial muscles on back

Question 17

What are Dermatomes

Accepted Answer

sensory fibers from a pair of spinal Nerves at 1 single layer. They get a sensation from a specific nerve.

Question 18

Important Dermatomes - how to loose sensation?

Accepted Answer

T4- Nipples and T10-Umbilicus  (belly button). 3 loss of adjacent dermatome levels (like 9,10,11) in the middle dermatome level to lose sensation. If you can't feel belly button, this is what might be damaged.

Question 19

Referred Pain

Accepted Answer

The organ nerve and the nerve of the skin share the same pathway, so when you feel pain in a certain area, it is because of pain inside rather than in your skin; essentially being yeeted by the organs nerves; occurs when sensory neurons from skin (somatic) and viscera (any organ) enter the spinal cord using the same nerve pathway to the brain. A tummy ache isn't actually in your tummy.

Question 20

What is a plexi

Accepted Answer

when nerve intersect, combine and appear to grow, they are only found in the cervical and lumbar enlargements

Question 21

what does an enlargement in the cervical and the lumbar region mean?

Accepted Answer

it means that there is more gray matter in those regions . Meaning more command center,  more cell bodies. C3 and L5 are conducting the arms and the legs so obviously they are going to need more movement.

Question 22

Cervical Plexus - location

Accepted Answer

located C1-C4.  Essentially the neck. This and the brachial plexus come from the cervical enlargement because only the cervical and lumbar have enlargement. Contains the Phrenic nerve.

Question 23

Name all (4) plexus formed by the Ventral Rami, what other ramus forms Plexus?

Accepted Answer

only ventral forms plexus. They are: 1) Cervical 2) Brachial  3) Lumbar 4) Sacral.

Question 24

Cervical enlargement plexusus? (2)

Accepted Answer

The cervical and the Brachial plexus exit from the cervical enlargement (c1-c7)

Question 25

Phrenic Nerve location and function- Part of the cervical plexus

Accepted Answer

located c3, c4, and 5, it is the motor for the diaphragm . The sensory is the skin. This is responsible for keeping you alive because of controlling the diaphragm.

Question 26

Brachial Plexus about and location.

Accepted Answer

Located C5-T1 , essentially the neck; motors the muscles of shoulder and upper limbs.  Sensory is skin of shoulder and upper limbs. Contains the Axillary Plexus, Musculocutaneous Nerve, Radial Nerve, Ulnar Nerve and Median Nerve.

Question 27

Axillary nerve- Brachial plexus

Accepted Answer

surrounds the surgical neck of the humerus. It motors the deltoid muscle and sensory at the skin of the shoulder.

Question 28

Musculocutaneous nerve - part of the brachial plexus

Accepted Answer

it is part of the brachial plexus. It motors: Bicep Brachii and the Brachialis. It sensorys in: the skin of the forearm,

Question 29

Radial nerve part of the brachial plexus

Accepted Answer

It motors the triceps, extensors of forearm and wrist. Sensory at: portions of posterior/lateral arm & forearm. If there is an  injury at the wrist, unable to move them, this is going to be a suspect.

Question 30

All of the nerves in the brachial plexus? (3 forearm) (2 arm)

Accepted Answer

Axillary (arm); Musculocutaneous (bicep/arm); Medial (forearm); Radial (forearm); Ulnar (forearm) nerves.

Question 31

Wrist drop, when you aren't able to hold anything with your hands. Look at what nerve? what plexus?

Accepted Answer

There is an inability to use extension. You have a problem with the radial nerve.

Question 32

Ulnar nerves- part of the brachial plexus

Accepted Answer

Motors the Flexor Capri Ulnaris, the medial flexor digitorum and the lumbricals (medial only). Ulnar is medial so think of that ig.

Question 33

Median Nerve- part of the Brachial Plexus- and NERVE DAMAGE (ape hands)

Accepted Answer

this nerve is dead center. It motors the wrist; Thenar Eminence; and lumbricals. A nerve damage of this will result in ape hands, this means you aren't able to conduct opposition, there is a loss of the thumb.

Question 34

Lumbosacral Plexus location and about

Accepted Answer

L1- S4. Their nerves include

Question 35

Femoral Nerve- part of the lumbosacral plexus

Accepted Answer

Motors the Quadriceps.

Question 36

The obturator nerve- Part of the Lumbosacral plexus

Accepted Answer

it motors : adductors (gluteus Maximus...), muscles of medial thigh . Sensory at: skin of medial thigh.

Question 37

The Sciatic nerve - part of the lumbosacral plexus - the location

Accepted Answer

located: L4-S5. Motors: Hamstrings

Question 38

Tibial Nerve - part of the Lumbosacral plexus

Accepted Answer

motors: Gastrocnemius, Soleus, tibialis Posterior. Or just all of the leg muscles behind.

Question 39

Common FIbular Nerve of the lumbosacral plexus. How many kinds/ branches? Names? and motors.

Accepted Answer

2 Branches.  Deep Fibular Nerve; muscles of the anterior leg. Superficial Fibular nerve; muscles of the lateral leg.

Question 40

Pudendal Nerve- part of the lumbosacral plexus

Accepted Answer

It motors and sensors the pelvic floor/ Diaphragm. Damage to this will cause prolapse, leakage, it is what keep your bottom goodies in place.

Lecture 15- The Peripheral Nervous System