Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Honors Anatomy > Pathway of Blood to the Heart > Flashcards

Pathway of Blood to the Heart Flashcards

1
Q

How much blood will the heart push out in one day? How much is that? (2)

A
  • The body’s supply of blood
  • Around six quarts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How much will will the heart pump blood through the vessels every day? How much is it actually pumping? (2)

A
  • Through the blood vessels over 1,000 times
  • Actually pumping about 6000 quarts of blood in a single day
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many times do the atrial cells beat per minute? How many times do the ventricular cells contract per minute? (2)

A
  • 60 times per minute
  • More slowly, about 20 to 40 times per minute
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the heart need to be an efficient pump?

A

A unified control system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Within what do the purkinje fibers spread?

A

Spread within the muscle of the ventricle walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does the AV valve system cause for heart muscles? In what direction? From what to the ventricles? (3)

A
  • Causes heart muscle depolarization
  • In only one direction
  • From atria to the ventricles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What contraction rate do the AV valves have on the heart? What does this enable the heart to do? (2)

A
  • Rate of 75 beats per minute
  • Beat as a coordinated unit
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does this contraction of the AV valves eject blood into?

A

The arteries leaving the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the clinical procedure for mapping the electrical activity of the heart?

A

Electrocardiography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

In a healthy heart, how do the atria contract?

A

Simultaneously (together)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

As the atria relax, what contracts?

A

Ventricles contract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does systole mean?

A

Contraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does diastole mean?

A

Relaxation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What cycle refers to the events of one complete heartbeat

A

Cardiac cycle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What do the atria and ventricles both do?

A

Both contract then relax

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How long is the cardiac cycle based on the average heart beating 75 times per minute?

A

0.8 seconds

17
Q

What are three periods during which the cardiac cycle takes place? (3)

A
  • Mid-to-late diastole
  • Ventricular systole
  • Early diastole
18
Q

What happens when ventricular contraction begins? What sound is created as the AV valves close? (2)

A
  • Pressure within the ventricles increases rapidly
  • Creating the first heart sound - “lub”
19
Q

What ends as early diastole begins? What relaxes? (2)

A
  • Systole ends
  • Ventricles relax
20
Q

During diastole, what sound is created as the semilunar valves snap shut?

A

Create the second heart sound - “dub”

21
Q

What is the amount of blood pumped our of each side of the heart (actually each ventricle) in one minute called?

A

Cardiac output (CO)

22
Q

What is cardiac output the product of?
(HR x SV = CO) (2)

A
  • Heart rate (HR)
  • Stroke volume (SV)
23
Q

What is the normal resting heart rate? What is the normal resting stroke volume? (2)

A
  • Heart rate: 75 beats per minute
  • Stroke volume: 70 ml per beat
24
Q

What system does blood that circulates inside the blood vessel form? What kind of transport system is it? (2)

A
  • Vascular system
  • Closed transport system
25
Q

As the heart beats, what is the blood propelled into that is leaving the heart?

A

Large arteries

26
Q

What does the tunica interna line?

A
  • Lines the lumen
27
Q

What is the lumen?

A

Interior of the vessels

28
Q

Thin layer of endothelium resting on a scanty layer of loose connective tissue - lumen. What kind of cells are they?

A

Squamous epithelial cells

29
Q

What is the bulky middle coat made up of smooth muscle and elastic tissue?

A

Tunica media

30
Q

What do some of the larger arteries have?

A

Elastic laminae

31
Q

What is elastic laminae?

A

Complete sheets of elastic tissue in addition to the scattered elastic fibers

32
Q

Tiny interweaving network of capillaries

A

Capillary beds

33
Q

The flow of blood from an arteriole to a venule that is through a capillary bed

A

Microcirculation

34
Q

A vessel that directly connects the arteriole to the venule at opposite ends of the bed (one of the capillary bed types of blood vessels)

A

Vascular shunt

35
Q

Surrounds the root of each true capillary and acts as a valve to regulate the flow of blood into the capillary

A

Precapillary sphincter

36
Q

Blood flowing through a terminal arteriole may take one of two routes (2)

A
  • Through the true capillaries
  • Through the shunt
37
Q

Blood flows through the true capillaries and takes part in exchanges with tissue cells with the precapillary sphincters are:

A

Relaxed (open)

38
Q

Blood flows through the shunts and bypasses the tissue cells when the precapillary sphincters are:

A

Contracted (closed)

Honors Anatomy (30 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions