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Vasculature > Lesson 2B P2 > Flashcards

Lesson 2B P2 Flashcards

1
Q

Alveoli how many cells thick

A

1

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2
Q

Where are the alveoli

A

At the end of the smallest airways

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3
Q

How many alveoli absorb oxygen from air

A

300 million

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4
Q

What is in close contast to alveoli

A

Pulmonary arteries and veins

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5
Q

Where do the pulmonary arteris branch from

A

Trunk off the base of the right ventricle

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6
Q

Where do the pulmonary pulmonary veins course to

A

The left atrium of the heart

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7
Q

How many pulmonary veins are there

A

4 (2 FROM EACH LUNG)

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8
Q

How is flow in the arteries maintained throughout diastole

A

Ventricles contract through out systole forcing expansion of vessel wall

Potential energy is stored in the wall

Aortic valve closes in the heart and starts diastole

Walls recoilc to release the stored potential energy

This recoil forces blood to continue forward motion - thus keeping blood pressure

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9
Q

What is ventricular systole

A

Period of contraction of the heart

Causes injection of blood into the aorta and pulmonary trunk

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10
Q

How long does ventricular systole last

A

0.-0.4 seconds

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11
Q

___-___ cc of blood leaves the ventricle with each contraction

A

80-100cc

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12
Q

What is aterial blood pressure peak

A

120mmHg

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13
Q

When does atrial systole occur

A

Towards the end of the ventricular diastole

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14
Q

How does atrial systole complete

A

By filling of the ventricles

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15
Q

During atrial systole both ______ contract simultaneously

A

Ventricles

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16
Q

What is diastole

A

Period of time when the heart (atria) refills with blood after systole contraction

17
Q

What is ventricular diastole

A

It is the period during which both ventricles are relaxing (filling with no contraction)

18
Q

What is atrial diastole

A

The period during which the atria are relaxing (filling)

Both atria are in diastole at the same time

19
Q

The ascending aorta leaves the heart from

A

Left ventricle

20
Q

The ascending aorta is dived into what segments

A

Ascend, arch , descening

21
Q

The first major branch of ascending aorta

A

Left and right coronary artery

22
Q

The thoracic aorta suplies (6)

A 
Pericardium 
Mediastinum 
Diaphragm 
Esophagus 
Bronchi 
Intercostal muscles
23
Q

3 arteries from celiac trunk

A

Hepatic, left gastric, splenic arteries

24
Q

SVC function

A

Carries deoxygenated blood from upper half of the body to the rt atrium

25
Q

The _______ vein drains into the SVC just prior to the right atrium

A

Azygos

26
Q

The aygos veins serves as

A

Collateral pathway as it connect the SVC and IVC

Vasculature (12 decks)

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