Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Single circulatory system order |
Pumps blood: heart, gas exchange system and DIRECTLY rest of the body. |
|
|
|
Double circulatory system order |
Pumps blood: heart, gas exchange organs and BACK TO HEART, rest of body |
|
|
|
Human circulatory system made out of |
Heart , blood , blood vessels |
|
|
|
Why single celled organisms no have circulatory system |
Single celled organisms do not need a circulatory system as they get all the nutrients they need by DIFFUSION through the cell membrane |
|
|
|
Why double circulatory + efficient |
Blood go faster and HIGHER PRESSURE/ higher blood pressure |
|
|
|
Human circulatory system use |
Bring oxygen and nutrients to the body |
|
|
|
Blood use |
Carry oxygen and nutrients |
|
|
|
Blood vessels use |
Carry blood around |
|
|
|
3 blood vessels |
Arteries, veins, capillaries |
|
|
|
Artery |
Blood from heart to body |
|
|
|
Vein |
Blood from body to heart |
|
|
|
Capillaries |
Blood through organs |
|
|
|
Arteries characteristics |
Large lining (thick walls) Can stretch and recoil (flexible) Can handle high pressure |
|
|
|
Vein characteristics |
Smaller lining. Have valves (so no backflow) Lower pressure. |
|
|
|
How blood flows through veins. |
Contracting muscles constrict (squeeze) the vein, so blood go up |
|
