Brainscape's Knowledge GenomeTM

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


See full index

A level PE > Anatomy and Physiology 1.1b > Flashcards

Anatomy and Physiology 1.1b Flashcards

1
Q

Cardiovascular System?

A

/Users/finleysmith/Desktop/Screen Shot 2019-01-11 at 09.26.02.png

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

Passage of Blood Through Heart?

A

1) Superior Vena Cava
2) Right Atrium
3) Tricuspid Valve
4) Right Ventricle
5) Semi-lunar Valve
6) Pulmonary Artery
7) Lungs
8) Pulmonary Vein
9) Left Atrium
10) Bicuspid Valve
11) Left Ventricle
12) Semi-lunar Valve
13) Aorta
14) Body

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

SA Node?

A

Generates Electrical Impulses - atria walls contract

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

AV Node?

A

Collects impulse and delays by 0.1 seconds

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

Bundles of His?

A

Located in the Septum - splits impulse into two

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

Bundle Branches?

A

Carry impulse to base of ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Purkinje Fibres?

A

Distribute the Impulse through Ventricles - Contract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Heart Rate (HR)?

A

Number of Times the Heart Beats Per Minute - 72bpm

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

Stroke Volume (SV)?

A

Amount of Blood ejected from left V per HB - 70ml

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

Cardiac Output (CO)?

A

Amount of Blood pumped out of LV per Min - 5L/min

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

Bradycardia?

A

A resting Heart rate below 60bpm

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

Maximum Heart Rate?

A

220 - Age = HRmax (bpm)

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

Stroke Volume Response to Exercise?

A
  • Increases until Plateau - 40-60% working capacity

- Occurs during sub-maximal intensity

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

Why does SV plateau during Sub Maximal Exercise?

A
  • Due to it allowing time for Ventricles to fill

- Maximal Energy does not allow this

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

Why is SV able to increase?

A
  • Increased Venous Return

- Starling’s Law

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

What is Starling’s Law?

A
  • Increased Venous Return leads to Increased SV

- Due to an increased Stretch in Ventricle Walls

17
Q

What is Venous Return?

A

-The return of the blood to the right atria through the veins

18
Q

What is the Cardiac Control Centre (CCC)?

A
  • Responsible for regulating the heart beat
  • Controlled by autonomic nervous system
  • Located in Medulla Oblongata
19
Q

Three types of factors which control CCC?

A

Neural, Intrinsic and Hormonal

20
Q

Types of Neural Control?

A

Proprioceptors, Chemoreceptors and Baroreceptors

21
Q

Function of Proprioceptors?

A
  • Inform CCC that movement has increased

- Located in Muscles, tendons

22
Q

Function of Chemoreceptors?

A
  • Detect decrease in blood pH due to inc. in lact. + co2

- Located aorta and arteries

23
Q

Function of Baroreceptors?

A
  • Inform CCC of increased in Blood pressure

- Located in Blood Vessel Walls

24
Q

2 Types of Intrinsic Control?

A

Temperature and Venous Return

25
Q

How does temp effect Intrinsic control CCC?

A

The changes will effect blood viscosity and speed of nerve impulses

26
Q

How does Venous Return effect Intrinsic control CCC?

A

Affect stretch of Ventricle Walls causing increase in SV

27
Q

Type of Hormonal Control

A

Nor/Adrenaline

28
Q

What is Nor/Adrenaline for CCC?

A

Released from Adrenal Glands and increase SV and HR

29
Q

Parts of the Vascular System?

A
  • Arteries and Arterioles
  • Capillaries
  • Veins and Venules
30
Q

Function of Arteries?

A
  • Carry Oxygenated Blood to muscles and organs
  • Contain Blood under high pressure
  • Large layer of smooth muscle and elastic tissue
31
Q

Function of Arterioles?

A
  • Distribute blood to capillaries

- Ring of Smooth Muscle

32
Q

5 Venous Return Mechanisms?

A
  • Pocket Valves
  • Smooth Muscle
  • Gravity
  • Muscle Pump
  • Respiratory pump
33
Q

Function of Pocket Valves?

A

-Located within veins and prevent backflow of blood

34
Q

Function of Smooth Muscle?

A
  • Within wall of vein

- helps venoconstrict pushing blood back to heart

35
Q

Function of Gravity?

A

-Blood from upper body aided by Gravity

36
Q

Function of Muscle Pump?

A

-Muscle pumps squeeze on veins and help blood back towards heart

37
Q

Function of Respiratory Pump?

A
  • Helps return blood back to thoracic cavity and abdomen back to heart
  • Helps change pressure in thorax when breathing
38
Q

Function of Capillaries?

A
  • One Cell thick
  • Gas exchange takes place
  • Oxygen into vessels > < Carbon Dioxide into Capillaries
39
Q

Function of Veins?

A
  • Carry Deoxygenated blood - have thin walls

- Smaller layer of smooth muscle allowing them to Venoconstrict

A level PE (13 decks)

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