Cardiovascular System Flashcards Preview

Anatomy > Cardiovascular System > Flashcards

Flashcards in Cardiovascular System Deck (32):
1

How does the blood exit the heart

Arteries

2

Where does nutrients, oxygen leave the blood to enter the body tissues

Capillaries

3

What are the main components of the blood

Liquid component and the cellular component

4

Why is the blood a tissue

It is a collection of similar specialised cells that perform a particular function

5

What is the liquid component of the blood

Non living fluid matrix(plasma)

6

What is the cellular component

Formed cells or elements

7

Composition of the cellular component

Red blood cell(erythrocytes), white blood cell(leukocyte) and platelets (thrombocytes)

8

What is a hematocrit

A fraction of the blood

9

Percentage of volume of WBC

Less than 1%

10

Percentage of RBC

45%

11

Percentage of plasma

55%

12

What is the PH of the blood

7.35-7.45( slightly basic)

13

What are the generalised function of the blood

Regulation, transportation and Defence

14

What are the main proteins in the plasma

Globulins, albumin and clotting factors

15

What is the function of the albumin

Maintenance of osmotic pressure( balance) between blood and interstitial cells/fluids

16

What is the function of the clotting factor or proteins

They facilitate clotting

17

Name any 2 clotting factors

Fibrinogen, thrombokinase

18

What percentage does plasma form out of water

90%

19

Example of a WBC

Basophils, macrophage

20

What is the function of the WBC

Defence

21

Why is the RBC Red in Color

Presence of hemoglobin

22

What is the life span of RBC

120 days

23

What is the fate of worn out RBC after 90-120 days

They are degraded in the kuffer cells and spleen

24

What happens when CO2 goes into the blood or how it is transported

It either binds to a haemoglobin(98%) or dissolved in the plasma (2%)

25

How is CO2 transported

It can be dissolved, or as a bicarbonate which forms in the RBC or can also bind to the haemoglobin

26

Haemoglobin has the same affinity for both CO2 and O2
True/ false

True
Because it will depend on their respective concentration

27

Define Haldane effect

A physiological phenomenon where higher concentration of Co2 displaces O2 from the haemoglobin ( the greater the concentration, the greater the affinity)

28

Co2+Hb---

Carbaminohaemoglobin

29

O2+Hb---

Oxyhemoglobin

30

CO +Hb---

Carboxyhemoglobin and its irreversible

31

Define the Bohr effect

A physiological phenomenon where the affinity of Hb for O2 varies inversely with CO2 concentration and PH of the blood

32

What is the literal meaning of haemostasi

Blood stopping