Date: ______Name: ______

SBI3U Worksheet – Heart, Blood Vessels and Blood

Heart and Blood Vessels

  1. Fill in the following chart:

Arteries / Veins / Capillaries
How they carry blood
Small vessels are called
Blood Pressure
Wall structure
Special Feature
Example
  1. Fill in the blanks
  1. ______is the largest vein in the body that takes blood from all of the body and dumps it into the ______atrium of the heart.
  2. ______carry blood away from the aorta to the arterioles.
  3. ______carry blood back toward the heart; rely on muscle contractions to provide pressure to move the blood.
  4. ______are no thicker than human hair and carry blood away from arteries into the capillaries.
  5. ______carry blood back to the veins after exchanges have occurred in the capillaries.
  6. ______is the largest artery in the body.
  7. ______are tiny connecting bridges between arterioles and venules. There are tiny muscles that control the flow of blood into these vessels called ______.
  8. When blood returns to the heart, it first passes through the ______side of the heart, then the ______side of the heart.
  9. Capillaries are composed of a single layer of cells that are responsible for exchanging ______and ______.
  10. The ______sends oxygenated blood back to the heart from the lungs.
  1. Label the heart diagram below and indicate with arrows the direction of blood flow.

  1. Name each part of the heart to answer the following questions.
  1. Which structure separates the right side of the heart from the left side? Why is it necessary to separate the two sides?
  1. Which structure stops the backflow of blood into the left ventricle?
  1. Identify the tricuspid valve. If this valve did not close properly, what effect if any would this have on the body?
  1. Which chamber pumps oxygenated blood out of the heart?
  1. Trace the flow of a red blood cell as it travels through structures D to O in the heart diagram above.
  1. Modified True or False

Please correct any false statements to make them true.

  1. ______Generally arteries have thicker walls than veins
  2. ______Semilunar valves are located between the atriums and the ventricles
  3. ______Veins are vessels that conduct blood from the heart, towards the body
  4. ______Heart rate increases as a result of the stimulation of the sympathetic nervous system.

Blood

1) What are the 3 main functions blood does for our body?

1.

2.

3.

2) What are the 4 components of blood?

______

______

3) Fill in the blank with the appropriate component

Look like red discs, no nucleus, similar in size ______

Small granular fragments, no nucleus, vary in size ______

Large in size, well formed nucleus ______

Straw-colored fluid ______

4) Where are red blood cells (RBC’s) made? ______

5) Hemoglobin gives RBC’s the ability to ______

6) What organ removes dead RBC’s? ______

7) What is the RBC’s job in transportation? ______

8) There is ______white blood cell to every ______RBC.

9) What does a white blood cell do? ______

10) True or False? White blood cells only travel in the blood stream and never travel in to the body ______

12) Name the white blood cells discussed in class and describe their function.

______:______

______:______

13) Platelets are removed in the ______and ______.

14)What do platelets do and how do they do it? ______

15) Plasma is composed of ______% ______and ______% ______

16) True or False? Missing certain proteins does not affect the bloods clotting ability

______

17) True or False? All 4 parts of the blood work together at the same time

______