Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

LQB389 - anatomy > Blood vessels of head and neck > Flashcards

Blood vessels of head and neck Flashcards

1
Q

What is the blood supply to the head?

A
  • internal carotid x2
  • external carotid x2
  • verteral arteries x2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where do the internal carotid arteries supply?

A
  • brain and eyes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where do the external carotid arteries supply?

A
  • extracranial structures (scalp, face)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where do the vertebral arteries supply?

A
  • brain
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the origin of the internal and external carotid arteries?

A
  • bification of the common carotid artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the collateral branches of the aortic arch?

A
  • brachiocephalic trunk
  • left common carotid artery
  • left subclavian artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does the brachiocephalic trunk terminally divide into?

A
  • right common carotid artery

- right subclavian artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

At what point does the brachiocephalic trunk terminally divide?

A
  • right sternoclavicular joint
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What percentage of people have a normal aortic bification?

A
  • 64.9%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the main aortic bificiation variation and what percent of population have this?

A
  • left common carotid and left subclavian artery share common origin of the aortic arch
  • 27.1%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where do the subclavian arteries terminate?

A
  • terminates at external margin of 1st rib
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do the subclavian arteries become continuous with?

A
  • becomes continuous with axillary arteries (don’t end just change name)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the major collateral branches of the subclavian artery?

A
  • vertebral (goes up)

- internal thoracic/mammaries (give rise to intercostal arteries)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the 4 main parts of the vertebral artery (include vertebral level)?

A
  1. cervical part (until C6)
  2. Vertebral part (C6-C1)
  3. Suboccipital part (C1 - foramen magnum)
  4. Intracranial part (once it crosses foramen magnum)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the course of the common carotid arteries?

A
  • ascends posterolateral to trachea and larynx
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Is there any collateral branches of the common carotid arteries?

A
  • no
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What s the termination of the common carotid arteries?

A
  • terminally divides into external and internal carotid arteries at superior boarder of thyroid cartilage
  • C3/4
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the major differences between the internal and external carotid arteries?

A
  • the internal carotid artery has a wider diameter and is located posterolateral to external carotid artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the carotid sinus?

A
  • is a dilation of the most proximal part of internal carotid artery
  • contains baroreceptors (for pressure) in walls
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What do the collateral branches of the external carotid arteries supply?

A
  • thyroid gland

- all parts of head except brain and eyes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the terminal branches of the external carotid arteries?

A
  • maxillary artery –> middle meningeal artery is a collateral branch of this
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the origin of the middle meningeal arteries?

A
  • collateral branch of maxillary artery of external carotid artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does the middle meningeal artery supply?

A
  • cranial bone and dura
24
Q

Where does the middle meningeal artery enter the cranial cavity?

A
  • through the foramen spinosum
25
Q

Where does the middle meningeal artery divide into anterior and posterior branches?

A
  • at pterion
26
Q

What are the parts of the internal carotid artery?

A
  1. Cervical part
  2. Petrous part
  3. cavernous part
  4. cerebral part
27
Q

Where does the petrous part lie?

A
  • follows carotid canal of petrous part of temporal bone
28
Q

Where does the cavernous part lie?

A
  • carotid groove of the body of the sphenoid bone
29
Q

Where does the cerebral part lie?

A
  • inferior surface of the brain
30
Q

What is the carotid siphon?

A
  • u-shaped portion of internal carotid artery

- formed partially by cavernous and cerebral parts

31
Q

What is the origin of the ophthalmic artery?

A
  • branch of carotid siphon –> internal carotid artery –> common carotid artery
32
Q

In the circle of willis, what arteries do the internal carotid arteries contribute to?

A
  • anterior cerebral arteries
  • middle cerebral arteries
  • posterior communicating arteries
33
Q

What does the union of the vertebral arteries form?

A
  • basilar artery
34
Q

In the circle of willis, what arteries do the vertebral arteries contribute to?

A
  • basilar artery

- posterior communicating artery

35
Q

What percentage of blood that is ejected from the heart goes to the head?

A
  • 20%
36
Q

What are the arteries that link the cerebral arteries to form the circle of willis?

A
  • anterior communicating

- posterior communicating (x2)

37
Q

What percentage of people have a normal/complete circle of willis?

A
  • 18%
38
Q

What are two variations in the circle of willis?

A
  • missing the anterior cerebral

- missing one of the posterior communicating

39
Q

What fissure does the middle cerebral artery pass through?

A
  • lateral fissure
40
Q

What fissure does the anterior cerebral artery pass through?

A
  • oblique fissure
41
Q

What fissure does the posterior cerebral artery pass through?

A

-

42
Q

What is the blood drainage of the head?

A
  • internal jugular veins (x2)
  • external jugular veins (x2)
  • vertebral venous plexus
43
Q

What is the vertebral venous plexus?

A
  • a network of veins that wrap around the vertebral part of vertebral artery
44
Q

What occurs at the internal occipital protrusion?

A
  • confluence of sinuses
45
Q

What is the blood flow of the venous sinuses into the internal jugular vein?

A
  1. occipital sinus and superior sagittal sinus
  2. confluence of sinuses
  3. transverse sinus
  4. sigmoid sinus
  5. internal jugular vein
46
Q

What venous sinuses are located in the dura matter?

A
  1. superior sagittal sinus
  2. inferior sagittal sinus
  3. straight sinus
  4. transverse sinus
  5. sigmoid sinus
  6. cavernous sinus
  7. inferior and superior petrosal sinuses
47
Q

What is the origin of the internal jugular veins?

A
  • continuation of sigmoid venous sinus in jugular foramen
48
Q

What is the termination of the internal jugular veins?

A
  • both form a confluence with the subclavian vein to form the brachiocephalic vein
49
Q

What is the superficial veins of the neck?

A
  • external jugular veins (x2)
50
Q

What is the origin of the external jugular vein?

A
  • tributary of the subclavian vein
51
Q

What does the external jugular vein drain?

A
  • most of scalp and face
52
Q

What does the external jugular vein course?

A
  • superficial to sternocleidomastoid
53
Q

What is the origin of the subclavian vein?

A
  • is a continuation of an axillary vein at external edge of 1st rib
54
Q

What does the subclavian vein course?

A
  • anterior to subclavian artery
55
Q

What are the two major tributaries of the subclavian vein?

A
  • external jugular vein

- vertebral vein plexus

56
Q

What is the termination of the subclavian veins?

A
  • confluence with internal jugular vein to form a brachiocephalic vein

LQB389 - anatomy (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions