External and Internal Jugular Veins

Question 1

What is the internal jugular vein cont from?

Answer 1

sigmoid sinus receiving blood from brain, face and neck

Question 2

where does the internal jugular vein descend?

Answer 2

within the carotid sheath initially posterior to ICA and then passes lateral to it, remain lateral to CCA with vagus nerve post to it

Question 3

After descending within the carotid sheath

• -> initially post ICA
• -> pass lat to CCA w/ VN post to it

what does the internal jugular vein join?

Answer 3

it joins the subclavian vein behind medial end of clavicle to form the brachiocephalic vein

Question 4

what forms the brachiocephalic vein?

Answer 4

internal jugular veina and subclavian vein

Question 5

what does the internal jugular vein have at its upper and lower ends?

Answer 5

Dilation
upper end (superior bulb)
lower end (inferior bulb)

Question 6

Relations of the internal jugular vein ANTEROLATERALLY

Answer 6

1. skin
2. fascia
3. sternocleidomastoid
4. parotid
5. its lower part is covered by: stern thyroid, sternohyoid, and omohyoid muscles
   6/ higher-up it is crossed by : stylohyoid, posterior belly diagastric and spinal part of accessory nerve

Question 7

relations fo internal jugular vein POSTEIRORLY

Answer 7

1. transverse processes of serve vert
2. levator scapular
3. scalenus medius
4. scalenous anterior
5. cervical pleexus
6. phrenic nerve
7. thyrocervical trunk
8. vertebral vein
9. 1st part of subclavian artery

Question 8

relations fo internal jugular vein MEDIALY

Answer 8

1. ABOVE: internal carotid artery and 9-12th cranial nerves

2. BELOWL common carotid artery and vagus nerve

Question 9

Where is the EJV formed and what forms it?

Answer 9

posterior to angle of mandible as posterior auricular vein and the retromandibular join

Question 10

what vein drains the scalp behind and above the ear?

Answer 10

POSTEIROR AURICULAR VEIN

Question 11

how is retromandibular vein joined?

Answer 11

formed when superficial temporal and maxillary veins joins the substance of parotid gland

Question 12

where does EJV pass after forming post to angle of mandible

Answer 12

straight down neck in superficial fascia and is superficial to sternocleidomastoid muscle

Question 13

Where does EJV continue after forming posterior tho angle of mandible, straight down neck ?

Answer 13

superior to clavicle and immediately post to SCM muscle, passes deep to clavicle and enters subclavian vein

Question 14

what are the tributaries of the EJV?

Answer 14

1 . POSTERIOR EXTERNAL JUGULAR VEIN (draining superficial areas of back of neck)

2. TRANSVERSE CERVICAL
3. SUPRASCAPULAR VEINS (draining posterior scapular regioon)