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17: Check Your Knowledge
Record your answers to each of the following questions below.
True or false.
A tissue is a collection of organs that works together.
A. True
B. False
Which of the following is a function of the skin?
A. Keep out germs.
B. Provide structure and shape.
C. Enable movement.
D. Circulate blood.
Which muscle contracts to bend the arm at the elbow?
True or false.
Arteries carry oxygen-rich blood, and veins carry oxygen-poor blood.
A. True
B. False
What is the name of the watery portion of blood?
The _____ is the site of oxygen and carbon dioxide exchange in the lungs.
Which organ of the digestive system makes bile?
True or false.
Ureters carry urine from the bladder out of the body.
A. True
B. False
Why do the lymph nodes swell when the body is fighting infections?
True or false.
In a reflex, the spinal cord signals the body to move without involving the brain.
A. True
B. False
Explain how the ear converts sounds into vibrations.
Which of the following hormones lowers blood sugar?
A. Glucagon.
B. Thyroid hormone.
C. Parathyroid hormone.
D. Insulin.
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