1. Cells that protect the body by engulfing foreign cells or producing antibodies are
A. Red blood cells
B. Cilia
C. Platelets
D. White blood cells
2. The circulatory system includes the
A. Lungs, heart, and brain
B. Lungs, blood vessels, and heart
C. Heart, blood, and blood vessels
D. Heart, arteries, and lymph
3. The protein found in red blood cells that transports oxygen is called
A. hemoglobin
B. fibrinogen
C. prothrombin
D. thrombin
4. The large flat muscle that contracts and alters the volume of the chest cavity is the
A. trachea
B. epiglottis
C. diaphragm
D. larynx
5. Another name for a fertilized egg is a
A. gastrula
B. placenta
C. blasocyst
D. zygote
6. Which of the following is NOT an endocrine gland?
A. pituitary gland
B. parathyroid gland
C. sweat gland
D. adrenal gland
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