Chapter 18 - Circulatory system Flashcards Preview

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Flashcards in Chapter 18 - Circulatory system Deck (20)
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1
Q

Transports blood away from the heart

A

Arteries

2
Q

Transports blood to the heart

A

Veins

3
Q

Exchanges substances between blood and tissues ; interconnects smallest arteries and smallest veins

A

Capillaries

4
Q

Conducts blood between the heart and peripheral tissues

A

Blood vessels

5
Q

To and from gas exchange surfaces in the lungs

A

Pulmonary circuit

6
Q

To and from rest of body

A

Systemic circuit

7
Q

Each circuit begins and ends with the _____ and occurs in _____.

A

Heart ; sequence

8
Q

What is the entry chamber?

A

Right atrium

9
Q

What is the pathway for the right atrium? and what does it do/what kind of blood?

A

To right ventricle to pulmonary circuit ; collects blood from systemic circuit ; oxygen-poor blood

10
Q

What is the pathway for the pulmonary circuit? What kind of blood?

A

Pulmonary arteries to pulmonary capillaries to pulmonary veins ; oxygen-poor blood

11
Q

What is the pathway for the left atrium? What kind of blood?

A

Receives blood from pulmonary circuit ; to left ventricle to systemic circuit ; oxygen-rich blood

12
Q

What is the pathway for the systemic circuit? What kind of blood?

A

Systemic arteries to systemic capillaries to systemic veins ; oxygen-rich blood

13
Q

What are the 5 general blood vessel classes?

A

Arteries, arterioles, capillaries, venules, and veins

14
Q

Large vessels close to the heart that stretch and recoil when heart beats ; include pulmonary trunk, aorta, and branches

A

Elastic arteries

15
Q

Medium-sized arteries ; distribute blood to skeletal muscles and internal organs

A

Muscular arieries

16
Q

Poorly defined tunica externa ; tunica media is only 1-2 smooth muscle cells thick

A

Arterioles

17
Q

Only blood vessels to allow exchange between blood and interstitial fluid ; very thin walls allow easy diffusion

A

Capillaries

18
Q

What do the venules include and what do they do?

A

Small veins (those smaller than 50 m lack a tunica media and resemble expanded capillaries) ; collect blood from capillaries

19
Q

What do the veins include?

A

Medium-sized veins

20
Q

What are medium-sized veins?

A

Smaller than arteries ; range from 2-9 mm in internal diameter ; thin tunica media with smooth muscle cells and collagen fibers ; thickest layer is tunica externa with longitudinal collagen and elastic fibers