Vessels And Nerves Of The Neck And Thorax-Canine

Front 1

external jugular vein

Back 1

located in the groove between the strenocephalicus m. and the braciocephalicus m.
Carries blood from the head running caudally to form the left and right brachiocephalic vein and then emptying into the cranial vena cava

Front 2

cephalic vein

Back 2

after giving off the axillobrachial vein the cephalic vein goes deep to the brachiocephalicus m. and then empties into the external jugular vein
*important site for blood collection and IV placement

Front 3

cervical nerves

Back 3

first cervical nerve exits the lateral vertebral foramen of the atlas. The successive nerves exit through the intervertebral foramina between adjacent vertebrae. The last one exits in between C7 and T1> (eight cervical nerves, only 7 cervical vertebrae

Front 4

accessory nerve

Back 4

the 11th cranial nerve
has motor function for the trapezius, sternocephalicus, cleidocephalicus, and onotransverasrius muscles

Front 5

common carotid artery

Back 5

branches of the brachiocephalic trunk, to supply the head face and brain

Front 6

vagosympathetic nerve trunk

Back 6

the combined vagus and sympathetic trunk in the neck. Fibers of the vagus pass caudally while fibers of the sympathetic pass cranially. The fusion is broken at the thoracic inlet

Front 7

carotid sheath

Back 7

the sheath of connective tissue encasing the common carotid artery, the vagosympathetic trunk and the small internal jugular vein.

Front 8

internal thoracic arteries

Back 8

arteries running within the mediastinum on the dorsal surface of the sternum. Give rise to branches which run dorsally caudal to each rib

Front 9

aorta

Back 9

the great artery leaving the left ventricle and arching caudually. It sends oxygenated blood from the left heart to the heart itself and to the rest of the body

Front 10

caudal vena cava

Back 10

the large vein returning blood fromt the head neck and thorax limbs to the right atrium

Front 11

caudal vena cava

Back 11

the large vein returning blood from the thorax, viscera and the caudal body to the right atrium

Front 12

phrenic nerve

Back 12

arisis from the cervical plexus (joining of the fifth sixth and seventh cervical nerves) and supplies motor fibers to the diaphragm

Front 13

vagus nerve

Back 13

a mixed nerve-(motor and sensory function)
Motor: innervates the muscles to the parynx and larynx--controls swallowing and vocalization
Sensory:sends fibers to the viscera of the cervical region, the thorax ans abdomen to regulate these oragans' activities

Front 14

left and right sublcavian veins

Back 14

drain the thoracic limb and join the external jugular vein to form the brachiocephalic vein

Front 15

azygos vein

Back 15

recieves theintercostal veins from the level of the diaphragm to about the third or fourth intercostal space. Can drain into either the cranial vena cava or directly into the right atrium

Front 16

left and right sublavian arteries

Back 16

supply the ncek, thoracic limb, and the cranial portion oth the thoracic wall. Each has many branches

Front 17

intercostal nerves

Back 17

the ventral branches of the thoracic nerves, run ventrally caudal to each rib.
Supply the intercostal muscles and the overlying skin

Front 18

sympathetic trunk

Back 18

located on either side of the thoracic vertebral column in the dorsal thoracic cavity

Front 19

ramus communicans

Back 19

the short communicating nerve that connects the dorsal branch of the thoracic nerves to the sympathetic trunk