Cardiovascular System

Question 1

Function of cardiovasular system

Answer 1

transports fluid, nutrients, watse products, gases, hormones
immune reaspone
blood pressure and body temperature regualtion

Question 2

Heart
location and function
structure of wall

Answer 2

Located in rge mediastinum from the 2nd to 5th intercostal
creates blood pressure - one eay blood flow
wall = epicardium > myocardium > endocardium > turabercule corna = ridges = turbulence

Question 3

artery and vein wall structure

Answer 3

tunica externa (connective tissue) > tunica media(smooth muscle) > tunica intima(endothelium)

Question 4

capillaries - epithelium

Answer 4

simple squamous - basement membrane and CT

extensive networks for gas exchange via diffusion

Question 5

Role and make up of Blood

Answer 5

Function = transport, regulation of PH, osmosis, ,maintain body temperature, protect against foreign substances , clot formation

composition = 55% plasma (water/proteins/solutes)
45%blood (platelets/WBC/RBC)

Question 6

Blood to heart process

Answer 6

aorta > coronary artery > heart tissue > coronary sinus cardiac veins > R atrium

Question 7

heart and hormonal control

Answer 7

vasoconstructs in response to stress

Question 8

Conducting system

Answer 8

action polentioal in membrane
heart genrtaes action potential
sinoatinal node and atroatrular node generates impukse in R atrium which spreads to cardiac muscle cells
and they contract vis purkinje fibres