cardiovascular system Flashcards
Functions of platelets
they minimise bleeding when you cut yourself
Functions of plasma
- enables other cells to move around
- makes up 50% of blood
Functions of red blood cells
they transport oxygen around the body via heamoglobin
Functions of white blood cells
protect you from infection and diesease
What if the effects of a cool down on the CV system
- increased venous return
- prevents blood pooling
- capillaries dialted to flush out latic acid
- heartrate decreases
What does a venule do
Receive blood from the capillaries at low pressure
What do arteries do
Carry blood under the highest pressure. Their walls extend and
recoil under this pressure.
What is the function of platlets
they aid clotting to prevent bleeding
What is the function of red blood cells
they carry and transport oxygen
Describe the changes in tidal volume during recovery after exercise
- tidal volume drops when exercise ends
- Because oxygen is needed for recovery process
- Rapid decrease at first
- Followed by a more gradual decrease
Name the structure that regulates the flow of blood into the capillaries
Pre-capillary sphincters
Structural characteristics of arteries
thick walls (muscular)
small lumen
SHORT term effects on cardiov system
- increased hr
- increased sv
- increased CO
- increased bp
LONG term effects on the cardiov system
- lower resting hr
- cardiac hypertrophy
- decreased bp
