Carotid Arteries/Jugular Vein Flashcards Preview

Gross Anatomy II Exam I > Carotid Arteries/Jugular Vein > Flashcards

Flashcards in Carotid Arteries/Jugular Vein Deck (24)
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1
Q

What artery is the main arteries (bilateral) to the head and neck?

A

Common Carotid Arteries (Left and Right)

2
Q

Where does the common carotid artery split into the internal and external carotid arteries?

A

Within the carotid triangle

3
Q

This artery enters the skull through the the carotid canal int eh temporal bone. What artery is this and what does it supply?

A
  • Internal Carotid Artery

- Supplies blood to the brain

4
Q

What artery is the main source of blood to the structures of the neck, face ans scalp?

A

External Carotid Artery

5
Q

What artery supplies the structures if the head that are external to the skull?

A

External Carotid Artery

6
Q

Waht are the eight (8) branches of the external carotid artery?

A

1) Superior Thyroid Artery
2) Ascending Pharyngeal Artery
3) Lingual Artery
4) Facial Artery
5) Occipital Artery
6) Posterior Auricular Artery
7) Superficial Temporal Artery
8) Maxillary Artery

7
Q

What are the terminal branches of the external carotid artery?

A

1) Superficial Temporal Artery

2) Maxillary Artery

8
Q

What is the slight dialation of the internal carotid artery where it joins the common carotid artery?

A

Carotid Sinus

9
Q

What is the function of the carotid sinus?

A

-It is a baroreceptor (blood pressure sensor)

10
Q

What nerve provides innervation to the carotid sinus?

A

Carotid sinus nerve, a branch of the glossopharyngeal nerve (CN IX)

11
Q

How does the carotid sinus function to regulate blood pressure?

A

As a reflex. When BP is up, it causes heart rate to decrease

12
Q

What is the small, reddish-brown mass located within or deep to the bifurcation of the common carotid artery?

A

Carotid body

13
Q

Where is the carotid body located?

A

deep or within the bifurcation of the common carotid artery

14
Q

What is the function of the carotid body?

A

It is a chemoreceptor which detects changes in the chemical makeup of the blood within the carotid

15
Q

What is the nerve innervation of the carotid body?

A

The carotid sinus branch of the glossopharyngel nerve (CN IX)

16
Q

How does carotid body function as a chemoreceptor to regulate the chemical makeup of the blood within the carotid artery?

A

If O2 is low or CO2 is high within the carotid, it causes a reflex to increase the rate and volume of resperation

17
Q

What vascular structure of the neck is never visible topographically?

A

Internal Jugular Vein

18
Q

What is usually the largest vein of the neck?

A

Internal jugular Vein

19
Q

The internal jugular vein is a continuation of what dural venous sinus and it drains into what major vein?

A

It is an direct extension of the sigmoid sinus

It drains into the brachiocephalic vein

20
Q

What is the dilation of the internal jugular vein at the origin below the jugular foramen?

A

Superior Jugular Bulb

21
Q

What are the tributaries of the Internal Jugular Vein?

A

1) Inferior Petrosal Sinus
2) Pharyngeal Veins
3) Facial Vein
4) Lingual Vein
5) Superior Thyroid Vein
6) Middle Thyroid Artery

22
Q

Which major vein of the neck DOES NOT drain into the internal jugular vein?

A

Inferior Thyroid Vein

23
Q

What is the dilation of the internal jugular vein near the termination into the brachiocephalic vein?

A

Inferior Jugular Bulb

24
Q

What is the significance of the inferior jugular bulb?

A

It contains a valve that prevents blood from backing up into the cranial vault