01/31 Flashcards Preview

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Flashcards in 01/31 Deck (30)
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1
Q

What is the path of blood?

A
  1. Right side of heart
  2. Lungs
  3. Left side of heart
  4. Body
  5. Back to right side of heart
2
Q

What system allows for blood to go from the right side of the heart to the lungs and back to the left side of the heart?

A

Pulmonary

3
Q

What system allows for blood to go from the left side of the heart to the body and back to the right side of the heart?

A

Systemic

4
Q

Which system is need of greater pressure of pumping blood?

A

Systemic

5
Q

What happens to the blood when the right ventricle contracts?

A

It goes out the pulmonary trunk

6
Q

Pulmonary veins bring the blood to the

A

Left atrium

7
Q

What happens to the blood when the left ventricle contracts?

A

Blood goes out the aorta

8
Q

What are the valves found between the atria and the ventricles?

A

AV Valves

9
Q

What causes for the AV valves to open?

A

Pressure from the atrium, allowing blood to go into ventricle

10
Q

The AV valves close when

A

The ventricle blood goes up

11
Q

Which valves open due to pressure in the ventricles?

A

SL valves

12
Q

When the blood makes a swishing sound, it means there is

A

No full valve closure

13
Q

What is Valvular stenosis?

A

Valves stiffen and do not freely open

14
Q

What happens to the heart when valves stiffen and constrict opening?

A

It has to exert more force to get blood moving

15
Q

What happens when there is an Incompetent valve?

A

Blood backflows so the heart repumps the same blood over and over again

16
Q

What is the function of the cardiac skeleton?

A
  • Provides structure, support, and insulation between atria and ventricles
  • Forms rings that support and give structure to heart valves
  • Provides framework for attachment of cardiac muscle
17
Q

How does the cardiac skeleton provide for attachment?

A

It anchors the cardiac muscle

18
Q

How does the cardiac skeleton provide insulation for cardiac muscle?

A

It prevents AP from traveling directly from atria to ventricle

19
Q

Which walls are thicker, atria or ventricles?

A

Ventricles

20
Q

Coronary Circulation is part of what circuit?

A

Systemic

21
Q

What is the role of the arteries in Coronary Circulation?

A

They deliver O2 rich blood to the heart

22
Q

Heart attack occurs when there is a blockage in

A

The coronary artery

23
Q

What is the role of the veins in Coronary Circulation?

A

Take CO2 + O2 poor blood and deliver it back to the right atrium via the coronary sinus

24
Q

What is significant about the Sarcoplasmic Reticulum in the cardiac muscle?

A

It lacks cisternae that contain Ca ions

25
Q

What are intercalated disks?

A

Areas between cardiac muscle cells where are there two types of cell junctions

26
Q

What are the types of cell junctions found in intercalated disks?

A

Desosomes and gap junctions

27
Q

What is the function of desosomes?

A

They help hold cardiac muscle cells together

28
Q

What is the function of gap junctions?

A

They allow for ions to move through gaps

29
Q

In order to contract, what does the heart need?

A

A signal

30
Q

What is significant about the cells in the heart compared to the skeletal system?

A

They can self-depolarize