neuro pt 3

Question 1

Are Olfactory nerves (I) sensory nerves

Answer 1

Yes, their sensory fibres are for the smell

Question 2

Are Optic nerves(II) sensory or motor

Answer 2

They are sensory nerves for vision

Question 3

What happens in the optic nerves (II)

Answer 3

The optic nerves converge for the optic chiasma and then the tracts go to the thalamus as optical radiation to the occipital cortex

Question 4

Are Oculomotor nerves (III)sensory or motor

Answer 4

They are motor nerves, that are referred to as the eye mover (4/6 of eye muscles)

Question 5

What is special about the oculomotor nerves (III)

Answer 5

They are mixed motor nerves. They are parasympathetic fibres to the iris. They also have sensory proprioceptive afferents

Question 6

Are the trochlear nerves sensory (IV)or motor and where are they found

Answer 6

They are motor nerves, the are one pair of eye muscles and they connect from the dorsal membrane to the superior oblique eye muscle.

Question 7

Are the Trigeminal nerves (V) sensory or motor

Answer 7

they are both, the sensory nerves can be found in the face and the motor fibers are for chewing.

Question 8

What are the 3 divisions of the trigeminal nerves (V)

Answer 8

THe ophthalmic,maxillary and mandibular division

Question 9

Are the abducens nerves(VI) sensory or motor

Answer 9

They are a motor muscles to the lateral rectus. It controls eye movement.

Question 10

Are the vestibulocochlear nerves (VIII) sensory or motor

Answer 10

They are sensory nerves for balance

Question 11

Are the facial nerves(VII) motor or sensory

Answer 11

They are mixed nerves ,but primarly motor

Question 12

How many branches do facial nerves (VII) have and who are they?

Answer 12

There 5 major branches and they are parasympathetic to the lacrimal gland, a part of 2 salivary glands and sensory o 2/3 of the tongue.

Question 13

Are glossopharyngeal nerves(IX) sensory or motor

Answer 13

They are mixed neurons. They are motor with the gag-relax and swallowing, they have parasympathetic fibres to the parotid glands. Their sensory nerves are related to taste, pressure touch and pain . also with the carotid sinus

Question 14

Are the vagus nerves (X) sensory or motor

Answer 14

they are mixed nerves and they extend beyond the head and neck

Question 15

How are the vagus nerves (X) motor and sensory

Answer 15

They are motor nerves, because the are parasympathetic to the, hear,lungs, abdominal and somatic to the pharynx and larynx.
They are sensory nerves because of the carotid sinus. They can send info to the muscles.

Question 16

Are the accessory nerves (XI) sensory or motor

Answer 16

They are motor nerves ( but mixed)

Question 17

The function of the accessory nerves (XI)

Answer 17

They are neck and head movements .

Question 18

Are hypoglossal nerves(XII) motor or sensory

Answer 18

They are motor nerves beneath the tongue.

Question 19

What is the function of hypoglossal nerves(XII)

Answer 19

Mixing, swallowing and speech

Question 20

What is the meaning of root when talking about spinal nerves

Answer 20

it is a one-way traffic

Question 21

What is the meaning of ramus when talking about the spinal nerves

Answer 21

it is a 2-way traffic

Question 22

The ventral rami branch out and make lateral connections outside of the spinal cord , except for

Answer 22

The T2-T12.

Question 23

Why are several fibres in the ventral rami are important

Answer 23

To avoid paralysation

Question 24

Where are the C1-C4 nerves found

Answer 24

They are found deep in the neck under the sternocleidomastoid

Question 25

What are the common branches of the cervical plexus and the neck

Answer 25

the cutaneous nerves

Question 26

What is the most important nerve in the cervical plexus and the neck.

Answer 26

The phrenic nerve, they are both sensory and motor nerves to the diaphram.

Question 27

Where is the auxiliary nerve found

Answer 27

They are found in the shoulders

Question 28

Where are the musculocutaneous nerve found

Answer 28

In the bicep brachii and barchialis to flex

Question 29

Where are the median nerves found

Answer 29

They are found in the flexor muscles in anterior forearm and palm

Question 30

Where are the ulnar nerves

Answer 30

They are medial to the elbow that follows to the ulna to the wrist and fingers

Question 31

Where are the radial nerves

Answer 31

The are found at the humerus and the dorsal part of the hand

Question 32

What are the nerves on the back

Answer 32

They are the dorsal rami

Question 33

Where are the anterolateral thorax

Answer 33

At the ventral rami t1-t2 (simple and segmented)

Question 34

Where and what do the femoral never do

Answer 34

They are found at the anterior thigh muscles and they are flexors and knee extensors

Question 35

Where and what does the obturator nerve do

Answer 35

It is found at the medial thigh and is an adductor muscle.

Question 36

What is the sacral plexus

Answer 36

L4-S4 they are in the lumbar region and branches to the buttocks,lower limbs and pelvis.

Question 37

Where is the sciatic nerve found

Answer 37

They are found in the posterior thigh and diverge into the musulocutaneos and median nerve

Question 38

Where is the tibial nerve found

Answer 38

behind the knee to the posterior calf to foot

Question 39

where is the common fibular nerve found

Answer 39

to the knee joint ,calf and dorsum foot

Question 40

Where are the superior and inferior gluteal nerves found

Answer 40

In the buttocks

Question 41

Where are the pudendal nerves found

Answer 41

Muscle and skin of perineum

Question 42

What is the dermatome

Answer 42

The area of the skin that braches of a single spinal nerve

Question 43

What are nonencapsulated nerve ending

Answer 43

They are found in the epithelian and CT They respond to pain temp and pressure and activated when painful stimuli

Question 44

What are vanilloid receptor

Answer 44

Ion channel open by heat,low pH and chemicals ( spicy)

Question 45

What are itch receptors

Answer 45

They are found in the dermis and activated by inflammatory chemicals like histamine

Question 46

What are epithelial tactile complexes

Answer 46

They are light pressure receptor (touch) from the dermis and epidermis

Question 47

What are hair follicle receptors

Answer 47

light touch receptors by bending hair

Question 48

What determines an encapsulated nerve ending

Answer 48

enclosed by ct and are mechanoreceptors

Question 49

What are tactile corpuscles

Answer 49

sensory terminals surrounded by Schwann cells and thin CT capsule

Question 50

What are lamella corpuscles

Answer 50

single dendrite that respond to pressure first applied

Question 51

What is bulbous corpuscles

Answer 51

spray of receptors endings for deep and continuous pressure

Question 52

What are muscle spindles

Answer 52

they are proprioceptors in the muscles that detect muscle stretch and resist the stretch

Question 53

What are the tendon organs?

Answer 53

they are proprioceptors in the tendons that have a reflex to relax when muscle shortens

Question 54

What are joint kinesthetic receptors

Answer 54

they are proprioceptors that sense the limb movement and aware of it