Unit 6 Knowledge Check: The Circulatory and Respiratory System

Which of the following identifies the level of organization of blood?

• 
  tissue

• 
  cell

• organ

• 
  system

Which of the following identifies the name of the cavity in which the heart is located?

• Cranial cavity
• Abdominal cavity
• Pelvic cavity
• thoraic cavity

Which of the following is the muscle that separates the chest cavity from the abdominal cavity?

• deltoid

• 
  rhomboid muscle

• Diaphragm
• Biceps brachii

Which of the following describes exhalation?

• 
  the process of breathing air out of the lungs

• the process of removing carbon dioxide from the bloodstream

• 
  the process of breathing air into the lungs

• 
  the process of diffusing oxygen into the bloodstreamexhalation

Which of the following is the main organ of the respiratory system?

• stomach

• bladder

• kidneys

• Lungs