Blood Vessels

Question 1

Artery

Answer 1

• Take blood away from the heart
• elastic walls from high pressure
• have a pulse
• form smaller vessels called arterioles which connect to the capillary
• carotid is in your neck and has a pulse

Question 2

Vein

Answer 2

• takes blood from body to heart
• Thin walled with valves for one way flow
• not elastic

Question 3

Capillaries

Answer 3

• connect arteries and veins
• Diameter is one cell thick
• are the smallest blood vessels and are spread through the body in a network
• where gasses and other materials are transferred from blood to tissues and vice versa

Question 4

Regulating temperature

Answer 4

Blood vessels can dilate or constrict
- exercise causes more heat to be carried to the skin to be released as sweat
- when cold blood vessels constrict reducing heat through your skin and you shiver

Question 5

Blood pathway in vessels

Answer 5

1. Heart
2. Aorta
3. Arteries
4. Arterioles
5. Capillaries
6. Venules
7. Veins
8. Vena cava
9. Heart

Question 6

Varicose veins

Answer 6

Raised veins due to damaged valves and stretched walls
- blood pools and bunches in veins
- This can be caused by prolonged standing