Lab 18 & 19- Blood Vessels I & 2 Flashcards

0
Q

What type of tissue makes up the tunica media

A

Smooth muscle

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1
Q
  • What type of tissue makes up the tunica intima?

* What is the unique name for this tissue location?

A
  • Simple Squamous

* Endothelium: lining of blood vessels

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2
Q

What type of tissue makes up the tunica external (Adventia)?

A

Loose areolar connective tissue

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3
Q

Name the 3 layers of tunics

A
  1. Tunica intima
  2. Tunica media
  3. Tunica externa (adventia)
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4
Q

ELASTIC ARTERIES
•Which tunic is thickest in these arteries?
•In which tunics are the elastic fibers located?
•Name some elastic arteries.

A
  • Tunica Media
  • All three
  • Pulmonary, aorta, common carotids
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5
Q

MUSCULAR ARTERIES
•Which tunic is thickest in these arteries?
•Where are the elastic fibers located?
•Name some muscular arteries.

A
  • Tunica media
  • Between the 3 layers (Internal & external elastic lamina)
  • Femoral, renal, splenic, brachial
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6
Q

What are the internal and external elastic lamina?

What is significant about these two structures?

A

•This lamina lies between the Tunica intima and Tunica media. The external elastic lamina lies between the Tunica media and tunica externa. These contain elastic fibers.

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7
Q

ARTERIOLES
Can you see these in the cadaver?
what is the function of the tunica media in these vessels?

A
  • No

* Determine which capillary bed receives blood

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8
Q

VEINS
•Is the tunica media of these vessels thicker or thinner than the arteries?
•What is the function of these vessels?
•What is the function of valves in these vessels?

A
  • Thinner
  • Stores blood (Capacitance) that is not in use.
  • Prevent backflow of blood
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9
Q

Blood from the aorta came from which heart chamber?

A

Left ventricle

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10
Q

Name two arteries that come off of the aortic arch?

A

Rt & Lt Coronary artery

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11
Q

Name 3 branches that come off of the aortic arch.

A

Brachiocephalic, Left Common Carotid, and Left Subclavian.

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12
Q

Name some of the arteries that branch off of the descending (thoracic) aorta

A

Esophageal, bronchial, posterior intercostal

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13
Q

Which two veins merge to form the superior vena cava?

A

Left and right brachiocephalic veins

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14
Q

What does the inferior vena cava pierce just before it enters the right atrium?

A

The diaphragm

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15
Q

From which heart chamber does the pulmonary trunk emerge?

A

The right ventricle

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16
Q

To which organ are the right and left pulmonary arteries going?

A

The lungs (low oxygen)

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17
Q

There is only one brachiocephalic artery is that on the right or the left side?

A

Right

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18
Q

There are two brachiocephalic veins, each brachiocephalic vein is formed by the merging of what vein from the upper limb, and what vein from the head and neck region?

A
  • Subclavian vein from the upper limb region

* An internal jugular vein from the head and neck region

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19
Q

What is a common clinical use of the common carotid artery?

Is this a paired or unpaired artery?

A

Checking for a pulse.

Paired

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20
Q

Where can the carotid sinus be found? What is the function of the carotid sinus?

A
  • Found where the common carotid branches into the external and internal carotid arteries.
  • measures blood pressure (baroceptor)
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21
Q

What areas are supplied by the external carotid artery?

A

Face and neck

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22
Q

What areas are supplied by the internal carotid artery?

A

The brain

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23
Q

Briefly describe the circle of Willis.

A

This is a system of interconnected arteries that circled the base of the brain. All of these are paired (one on each side) except the anterior communicating artery.

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24
Q

Is the basilar artery part of the circle of Willis? How is it formed?

A

No, it is not part of the circle of Willis it is formed by the two vertebral arteries at the junction of the pons and the medulla.

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25
Q

Name the arteries that are apart of the circle of Willis.

A
  • Posterior cerebral arteries
  • Posterior communicating arteries
  • Internal carotid arteries
  • Middle cerebral arteries
  • Anterior cerebral arteries
  • Anterior communicating artery
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26
Q

Posterior cerebral arteries

A

Branch off of the basilar artery (posteriorly)

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27
Q

Posterior communicating arteries

A

connect the posterior cerebral artery is posterior to the internal carotid artery is anteriorly

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28
Q

Internal carotid arteries

A

Enter the skull through the carotid canal.

29
Q

Middle cerebral arteries

A

These are branches off the internal carotid artery that travel in the lateral sulcus.

30
Q

Anterior cerebral arteries

A

Branches off of the internal carotid artery that travel in the longitudinal fissure.

31
Q

Anterior communicating artery

A

Connects the two anterior cerebral arteries.

32
Q

Main brain drain

A

Internal jugular vein

33
Q

Where does the internal jugular vein exit the skull?

A

Exits the skull through jugular foramen

34
Q

The superior sagittal sinus is found in the superior border of which dural fold?

A

Falx Cerebri

35
Q

Where does the transverse sinus receive blood from?

A

Superior sagittal sinus and other veins.

36
Q

Subclavian Artery/Vein runs from its point of origin until it crosses over what?

A

The first rib

37
Q

What artery does the subclavian branch off on the right side?
What artery does this branch off of on the left side?

A

•Brachiocephalic for the right side •Aortic Arch from the left side

38
Q

Vertebral artery branches off of which artery?

A

Subclavian artery

39
Q

What does the vertebral artery run through in the cervical vertebra?

A

The transverse foramina

40
Q

What does the axillary artery/vein begin as and when does it turn into the axillary?

A

Begins as the subclavian artery crosses over the first rib. Runs until the vessel passes the inferior border of the teres major muscle.

41
Q

Beginning and end of the brachial artery/vein.

How is this artery used in everyday clinical practice?

A
  • Begins as axillary artery passes the inferior border of the teres major; ends at the burification into the radial and ulnar arteries.
  • Used to measure blood pressure
42
Q

Beginning & end of ulnar a/v

A

Begins at the bifurcation of the brachial artery in the cubital fossa. Ends as it joins the palmar arches in the hand.

43
Q

Where is the palmar arch?

A

Superficial in the hand.

44
Q

Where is the common digital a/v located?

A

Extend from the superficial palmar arch toward the digits.

45
Q

Where is the digital arteries proper located?

A

At the base of the digits, the common digital artery branches to form two arteries, one for each adjacent digit.

46
Q

What are the 3 upper limb veins (superficial)?

A
  1. Basilic V= More medial
  2. Cephalic V= More lateral
  3. Median Cubital V.= Used for drawing
47
Q

Basilic V starts where and drains into where?

A

Runs from the little finger and along the medial side of the upper limb, drains into the brachial vein in the arm.

48
Q

Where does the Cephalic V begin and where does it drain into?

A

Runs from the base of the thumb along the lateral side of the upper limb, runs through a groove between the deltoid and pectoralis majors muscles before draining into the auxiliary vein.

49
Q

What is significant about the Median Cubital V?

A

It connects the Basilic and Cephalic veins in the cubital region.
It is also used for drawing blood.

50
Q

Define Abdominal Aorta

A

Continuation of the thoracic aorta after it pierces the diaphragm.

51
Q

The celiac trunk is a short branch that branches off into what 3 arteries?

A
  1. Splenic Artery
  2. Left gastric artery
  3. Common Hepatic Artery
52
Q

The splenic artery supplies what organs?

A

Spleen, pancreas

53
Q

What organ(s) does the left gastric artery supply?

A

Esophagus, lesser curvature of the stomach.

54
Q

What does the common hepatic artery split into? What does each supply?

A

Splits into the:

  1. Gastroduodenal artery (supplies pancreas, duodenum, greater curvature of stomach)
  2. Hepatic artery proper (splits into rt & left hepatic arteries which supply the left and right lobes of the liver)
55
Q
Is the superior mesenteric A/V paired or unpaired?
What organ(s) does this branch supply?
A
  • Unpaired

* Small intestine, cecum (part of the large intestine), ascending & transverse colon (half of it; the right side)

56
Q

Is the renal A/V paired or unpaired? What organ does this supply?

A
  • Paired

* Kidneys

57
Q

Is the inferior mesenteric A/V paired or unpaired?

What organ does this supply?

A
  • Unpaired

* Transverse, descending, & sigmoid colon, superior rectum.

58
Q

The common iliac A/V splits into what two arteries?

A
  1. Internal iliac A/V

2. External iliac A/V

59
Q

What organs does the internal iliac artery supply?

A

Pelvic organs (bladder, reproductive organs, gluteal muscles)

60
Q

What organs does the external iliac A/V artery supply?

A

Becomes the temoral artery- lower limb

61
Q

What does the word “common” mean in reference to arteries?

A

That it will most likely split eventually.

62
Q

Define the hepatic portal system.

A

Drains blood from the intestines that contains food into the liver where it can be detoxified.
(The first capillary bed is in the intestines and the second is in the liver)

63
Q

The hepatic portal vein forms at the junction of which 2 veins?

A

The splenic vein & the superior mesenteric vein

64
Q

The iliac artery turns into what artery?

A

The femoral artery is a continuation is the external iliac artery as the artery passed under the inguinal ligament.

65
Q

Name the 2 terminal branches of the popliteal artery and their locations

A
  1. Anterior tibial artery: Travels in the anterior compartment of of the leg.
  2. Posterior tibial artery: Travels in the posterior compartment of the leg.
66
Q

Define Dorsalis Pedis Artery and its significance.

A

Found in the dorsal aspect of the foot; can be used to take a pulse

67
Q

Where can the fibular artery be located?

A

Runs in the lateral compartment of the leg

68
Q

Route of the Greater Saphenous vein and where it empties.

How is this vessel used clinically?

A
  • Runs from the medial side of the ankle up to the thigh where it empties into the femoral vein.
  • Coronary bypass surgery
69
Q

Where can the foramen Ovale/ fossa Ovale be found?

A

In the atria of the heart

70
Q
  • Where can the Ductus arteriosus/ Ligamentum Arteriosum be found?
  • How was this duct used during fetal life?
A
  • Between the pulmonary trunk and aortic arch.

* Shunt blood from pulmonary trunk into aorta.