World Book Trivia Challenge--10/15-human Body
- 1.
Which of the following is NOT one of the four main kinds of macromolecules that make up the human body?
- A.
Protein
- B.
Nucleic acid
- C.
Fiber
Correct Answer
C. FiberExplanation
Except for water, all of the chief molecules in the body contain the element carbon. The most important carbon-containing molecules are large, complicated compounds called macromolecules. There are four main kinds of macromolecules in the body: carbohydrates, lipids, proteins, and nucleic acids.Rate this question:
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- 2.
What type of tissue allows parts of the body to communicate with one another?
- A.
Epithelial tissue
- B.
Muscle tissue
- C.
Nervous tissue
Correct Answer
C. Nervous tissueExplanation
Nervous tissue carries signals. It permits various parts of the body to communicate with one another.Rate this question:
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- 3.
What is the outermost layer of skin called?
- A.
Dermis
- B.
Epidermis
- C.
Subcutaneous tissues
Correct Answer
B. EpidermisExplanation
The epidermis forms the outermost layer of the skin. It serves as a barrier between the outside world and the inner tissues of the body.Rate this question:
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- 4.
What are the alternate light and dark crossbands on skeletal muscles called?
- A.
Striations
- B.
Tendons
- C.
Tissue
Correct Answer
A. StriationsExplanation
Skeletal muscles are attached to the bones. They move the bones of the arms, legs, fingers, and other parts of the skeleton. We can consciously control the skeletal muscles, and so they are known as voluntary muscles. The fibers that make up a skeletal muscle have alternate light and dark crossbands called striations.Rate this question:
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- 5.
___________ carry blood to the heart.
- A.
Capillaries
- B.
Veins
- C.
Arteries
Correct Answer
B. VeinsExplanation
The blood vessels form a branching network of about 60,000 miles (100,000 kilometers). They can be divided into three types (1) Arteries carry blood from the heart. (2) Veins carry blood to the heart. (3) Capillaries connect the arteries and veins.Rate this question:
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- 6.
What part of the body is a link between the nervous and endocrine systems?
- A.
Adrenal gland
- B.
Exocrine glands
- C.
Hypothalamus
Correct Answer
C. HypothalamusExplanation
The hypothalamus links the nervous and endocrine control systems.Rate this question:
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- 7.
What is another name for red blood cells?
- A.
Hemoglobin
- B.
Erythrocytes
- C.
Leukocytes
Correct Answer
B. ErythrocytesExplanation
Red blood cells, also called erythrocytes carry oxygen to body tissues and remove carbon dioxide.Rate this question:
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- 8.
Yellow bone marrow typically produces new blood cells.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The cells of red bone marrow—the soft, fatty core of many bones—produce new blood cells and release them into the bloodstream. Yellow bone marrow, the most common type of marrow in the adult skeleton, stores fat. Yellow bone marrow does not normally produce blood cells.Rate this question:
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- 9.
The exchange of carbon dioxide and oxygen occurs in small chambers in the lungs called the alveoli.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The exchange of carbon dioxide and oxygen occurs in the alveoli. Each alveolus is surrounded by a network of small blood vessels. Like the alveoli, these vessels have extremely thin walls.Rate this question:
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- 10.
You can voluntarily control and move smooth muscles.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Much brain activity occurs at the conscious level. We are aware of decisions made at this level and can voluntarily control them. Other activity occurs at the subconscious level. This activity regulates the smooth muscles and is beyond voluntary control.Rate this question:
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Mar 22, 2022Quiz Edited by
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Oct 08, 2012Quiz Created by
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