Brainscape's Knowledge GenomeTM

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


See full index

science for medicine > cardiovascular system physiology > Flashcards

cardiovascular system physiology Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the main organ in the cardiovascular system ?

A

heart

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

what’s involve in the venous system in the cardiovascular system ?

A

veins
venules

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

what’s involved in the arterial system in cardiovascular system ?

A

Arteries
arterioles

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

if taking a blood sample from the venepuncture route ,where is the site its taken from and what type of blood composition ?

A

site = vein [median cubital , cephalic or basilic vein ]

blood composition = venous blood

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

if taking a blood sample from the arterial blood , what is the site taken from and the blood composition ?

A

site = artery [ radial or femoral artery ]

blood composition = arterial blood

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

if taking blood from the finger tip route , what is the site its taken from and the blood composition ?

A

site =capillary [ second and third finger]

blood composition = mixed venous - arterial blood

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

if blood is taken from the heel prick route , what’s its site its taken from and blood composition ?

A

site = capillary [medial or lateral surface]

blood composition = mixed venous - arterial blood

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

label the heart

A

look at lecture slides

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

what is the myocardium ?

A

thicker layer of specialised muscle tissue in the heart

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

what is the myocardium composed of ?

A

cardiomyocytes and intercalated discs

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

is myocardium smooth or striated muscle ?

A

striated muscle

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

is myocardium muscle involved in voluntary or involuntary contractions

A

involuntary

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

describe how action potential is produced at the heart by electrophysiology ?

A

1 - imitates at the Sino-atrial node

2- spreads across the atria

3- received at the atrio- ventricular node

4- diverted down the bundle of his

5- travels down the septum

6- travels along the bundle branches

7- conducted along by the Purkinje fibres

8- spreads across the ventricles

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

what is the P wave in an ECG?

A

atrial depolarization

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

What is the PR interval in an ECG ?

A

Time between onset of depolarisation in the atria and onset of depolarisation in the ventricles

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

what is the QRS complex in an ECG ?

A

Ventricular depolarization

17
Q

what is the ST segment of the ECG ?

A

plateau phase of ventricular depolarization

18
Q

what is the T wave in the ECG ?

A

Ventricular repolarization

19
Q

what is the QT interval in an ECG ?

A

ventricular depolarization and repolarization

20
Q

what is the roles of the blood?

A

transport
blood clots
immunity

21
Q

what percentage of the blood is haematocrit , buffy coat and plasma ?

A

haematocrit = 45 %
buffy coat = <1%
plasma = 55%

22
Q

what is in a haematocrit ?

A

erythrocytes [red blood cells]

23
Q

what is in the buffy coat ?

A

Leukocytes [ white blood cells ]
platelets

24
Q

what is in the plasma ?

A

water
proteins
other solutes [ ions and gases ]

25
Q

if someone has anaemia what is its effect on blood composition ?

A

depressed haematocrit [ less ]

26
Q

if someone has polycythaemia , what will there blood composition look like ?

A

elevated haematocrit

27
Q

where is erythrocytes produced ?

A

bone marrow

28
Q

what hormone is erythrocytes regulated by ?

A

EPO [ erythropoietin ]

29
Q

what shape are erythrocytes and why are they this shape ?

A

biconcave shape and to have a large surface area

30
Q

how many binding sites do haemoglobin contain ?

A

four

31
Q

what is blood pressure ?

A

the force of circulated blood on the walls of the arteries during contraction [ systole ] and relaxation [ diastole ]

32
Q

blood and plasma experience resistance as they travel through blood vessels ,what is the resistance determined by ?

A

blood vessel diameter
blood viscosity
blood vessel length

33
Q

what is the equation to calculate cardiac output ?

A

heart rate x stroke volume = cardiac output

34
Q

what is the word for high blood pressure ?

A

hypEr tension

35
Q

what is the word for low blood pressure ?

A

hypOtension

36
Q

what are some of the possible effects of hypertension and hypotension ?

A

heart disease
kidney damage
stroke

37
Q

what are some of the lifestyle factors which can effect blood pressure?

A

smoking
physical activity
alcohol consumption
stress
overweigh and obesity
caffeine consumption
sleep disturbance

science for medicine (16 decks)

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