Phrenic Nerves

Question 1

what is the anterior nerve root

Answer 1

anterior rami C3,C4,C5

Question 2

what is it motor function

Answer 2

innverates the diapghram

Question 3

what is its sensory function

Answer 3

to innervate the central part of the diaphragm, the pericardium and the mediastinal part of the partial plerua

Question 4

where does the phrenic nerve originate

Answer 4

cervical spinal root C3 , C4 + C5

Question 5

What does spinal root C4 provide

Answer 5

the main contribution

Question 6

what does C3 + C5 provide

Answer 6

lesser contribution

Question 7

what are some communicating fibres

Answer 7

cervical plexus

Question 8

where does the nerve arise

Answer 8

lateral border of the anterior scalene muscle

Question 9

what does it pass inferiorly over

Answer 9

anterior surface of the anterior scalene

Question 10

what is it deep to

Answer 10

prevertbeal layer of the cervical fascia

Question 11

what does it run posterior to

Answer 11

subcliavian vein

Question 12

what does the right phrenic nerve pass over

Answer 12

the lateral part of the right subclavian artery

Question 13

how does the right phrenic enter the thorax

Answer 13

via the superior thoracic aperture

Question 14

what does the right phrenic nerve descend anteriorly along

Answer 14

right lung root

Question 15

what does the right phrenic come associated with
what does it cross

Answer 15

associates with the pericardium and runs along the right atrium

Question 16

where does the right phrenic nerve peicer the diaphragm

Answer 16

at the inferior vena cava opening

Question 17

what does the right phrenic nerve innervate

Answer 17

inferior surface of the diapghram

Question 18

what does the left phrenic nerve pass anteriorly over

Answer 18

medial part of the left subclavian artery

Question 19

what does the left phrenic nerve enter the thorax via

Answer 19

superior thoracic aperture

Question 20

what does the left phrenic nerve descend anterior to

Answer 20

left lung root

Question 21

what does the left phrenic nerve cross and bypasses

Answer 21

the vagus nerve (posterior to the phrenic)

Question 22

what does the left phrenic nerve associate with and go over

Answer 22

associates with the pericardium and goes over the left atrium and ventricle

Question 23

what does the left phrenic nerve perice

Answer 23

the inferior surface of the diapghram

Question 24

what does the left phrenic nerve innervate

Answer 24

inferior surface of the diapghram

Question 25

what is the name of the side of the diaphragm the phrenic nerve innervates

Answer 25

ipsilateral side

Question 26

what part of the diapghram do the phrenic nerves supply

Answer 26

central diapghram including the plerua and peritoneum

Question 27

what sensations does the phrenic nerve also supply

Answer 27

the sensation to the mediastinal plerua and pericardium

Question 28

what runs alongise the right phrenic nerve

Answer 28

right brachecephalic vein , SVC and the pericardium over the right atirum

Question 29

What does the left phrenic nerve lie between

Answer 29

left subclaivian artery and vien

Question 30

What is the left phrenic nerve left to

Answer 30

arch of the arota