Activity 4: Pulmonary Circulation and Identifying Vessels of the Pulmonary Circulation

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1

How does the pulmonary circulation differ from the systemic circulation?

It does not serve the metabolic needs of the body tissues.

2

What tissue is primarily associated with pulmonary circulation?

Lung tissue

3

What is the main function of the pulmonary circulation in regards to blood?

Brings blood into close contact with the alveoli to exchange carbon dioxide with oxygen

4

The arteries of the pulmonary circulation are structurally like what blood vessels?

Veins

5

The arteries of pulmonary circulation create what type of pressure in the lungs?

Create a low-pressure bed in the lungs

6

The healthy artertial pressure in the systemic circulation is what?

120/80

7

The pressure in the pulmonary artery is about what?

24/8

8

The bronchial arteries provide what to the lungs?

Functional blood

9

The bronchial arteries diverge from what portion of the descending aorta?

Thoracic aorta

10

Pumonary circulation begins with what artery? (Hint: also a trunk)

Pulmonary trunk

11

The pulmonary trunk leaves which ventricle?

Right ventricle

12

The pulmonary trunk divides into what 2 sets of arteries?

1. Left pulmonary arteries

2. Right pulmonary arteries

13

The right and left pulmonary arteries go into which organ?

The lungs

14

After entering the lungs, the right and left pulmonary arteries subdivide into which set of arteries?

Lobar arteries

15

How many lobar arteries are there on the right side?

3 on the right side

16

How many lobar arteries are there on the left side?

2 on the left side

17

The lobar arteries branch extensively in the lungs to form what type of blood vessel?

Arterioles

18

The arterioles terminate where?

In the capillary networks surrounding the alveolar sacs

19

Respiratory gases diffuse across at which 2 locations?

1. Walls of alveoli

2. Pulmonary capillaries

20

The pulmonary capillary beds are drained by what blood vessels?

Venules

21

The venules converge to form larger veins and finally what 4 veins?

The four pulmonary veins

22

How many pulmonary veins leave each lung?

2 pulmonary veins leave each lung

23

The 4 pulmonary veins return to which chamber of the heart?

Left atrium

24
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Identify the blanks.

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