Lecture 21: Circulatory System-Venous Drainage Flashcards

1
Q

where are superficial veins of brain collected?

A

dural sinus (venous channels btw tow layers of cranial dura mater)

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2
Q

where are deep veins of brain collected

A

great cerebral vein that drains into straight sinus

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3
Q

what does sigmoid sinus become as it crosses the jugular foramen

A

internal jugular vein

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4
Q

what are anterior and external jugular veins

A

superficial
receive venous blood of posterior scalp, neck. drain into subclavian vein

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5
Q

where does opthalmic vein drain

A

cavernous sinus. very deep

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6
Q

do venous sinuses have valveS?

A

no

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7
Q

vena comitans

A

“accompanying vein”
for an artery there is usually a pair of accompanying veins

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8
Q

are there superficial arteries?

A

no

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9
Q
A
  1. right subclavian
  2. right axillary
  3. right radial
  4. right brachial
  5. right ulnar
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10
Q

what are the 3 superficial veins of upper limb

A
  1. cephalic- btw deltoid and pectoral
  2. basilic- drains into axillary or subclavian and returns via SVC
  3. cubital- forearm
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11
Q
A
  1. R subclavian
  2. R axillary
  3. cephalic
  4. basilic
  5. median cubital
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12
Q

A

A
  1. femoral
  2. great saphenous
  3. anterior tibial
  4. posterior tibial
  5. fibular
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13
Q
A
  1. small saphenous
  2. popliteal
  3. small saphenous
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14
Q

where do deep veins of lower limb drain to

A

femoral vein (except gluteal region drain into internal iliac)

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15
Q

where does the great saphenous veni drain into

A

femoral

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16
Q

what does femoral vein become after passing deep to inguinal ligament

A

external iliac vein

17
Q

what are the superficial veins of lower limb

A

great and small saphenous

18
Q

what are deep veins of lower limbs

A

anterior/posterior tibial, fibular, popliteal, femoral

19
Q

what does small saphenous vein drain into

A

popliteal. rnus laterally and posterioyl

20
Q

what does great saphenous drain into

A

femoral. ascends medially

21
Q
A
  1. SVC
  2. IVC
22
Q

are veins equal on both sides?

A

no.
The ones on Right side are shorter
The ones on left side are longer because they have to cross midline to get to vena cavas

23
Q

what forms the SVC

A

L and R brachipcephalic veins.

24
Q
A
  1. brachiocephalic
  2. subclavian
  3. internal jugular
25
Q
A
  1. posterior intercostal
  2. azygos
  3. accessory hemiazygos
    4.hemiazygos
26
Q

are azygos and hemiazygos paired?

A

NO
azygos-right side. drains in SVC

hemiazygos-L side

accessory hemiazygos-L side

27
Q

what drains throacic wall

A

anterior and posterior intercostal veins

ant. empty into brachiocephalic

post. empty into azygus on right side, or accessory hemiazygus/hemiazygus on left

28
Q

what forms the IVC

A

unions L and R common iliac veins

29
Q
A
  1. hepatic
  2. renal
  3. gonadal
  4. IVC
30
Q
A
  1. L common iliac
  2. L internal iliac
  3. L external ilic
  4. L femoral
31
Q

explain hepatic portal circulation

A

Venous blood returning from the alimentary canal below diaphragm is rich in nutrients, delivered to liver for processing. Venous blood of liver empties into inferior vena cava through hepatic veins
Hepatic portal vein transports venous blood from abdominal esophagus, stomach, intestines, pancreas, spleen to the liver. Vein is formed by union of superior mesenteric and splenic veins behind pancreas

32
Q

explain liver blood supply

A

DUAL! hepatic artery and venous drainage thru portal system

33
Q

superior mesenteric

A

collects venous blood from small intestine, cecum, appendix, ascending, transverse colon

jejunal/ileal/ileocoli/right/middle colic all drain into superior mesenteric

34
Q

inferior mesenteric

A

collects venous blood of splenic flexure, descending, sigmoid colon, rectum.

superior rectal, sigmoidal, left colic form inferior mesenteric

drain into IVC

35
Q

splenic vein

A

forms at hilum of spleen. receives venous blood from stomach/pancrease AND inferior mesenteric.

36
Q
A
  1. hepatic portal
  2. superior mesenteric
  3. splenic
  4. inferior mesenteric