Alveoli

1
7th Grade Unit 5 The Structure and Function of
Body Systems Lesson 3 Respiratory and
Circulatory Systems, and Flow of
Blood Vocabulary of Instruction
2
Alveoli

• Tiny sacs of lung tissue specialized for the
  movement of gases between the air and the blood.

3
Arterioles

• The smallest divisions of the arteries located
  between the muscular arteries and the
  capillaries.

4
Capillaries

• Tiny little venules or vessels between the
  arteries which carry blood from the heart and
  veins back to the heart.

5
Diaphragm

• A large, dome-shaped muscle that has an important
  function in breathing.

6
Hemoglobin

• Substance in red blood cells which conveys oxygen
  from the lungs to body tissues.

7
Platelets

• Tiny membrane-bound cell-like particles found in
  blood that carry materials important for the
  formation of clots.

8
Trachea

• The windpipe of the respiratory system.

9
Venules

• The minute vessels that collect blood from the
  capillary plexuses and join together to form
  veins.

10
The Whole Picture