The Human Body Unit Test Review
Exam With Correct Answers
Which level of organization falls directly after the tissue level when listed in order from
least to most complex? - correct answer D. organ
\When calcium levels in the blood are too low, the body releases a hormone that
removes calcium from the bones. A person who suffers from a certain type of thyroid
disease will often have low blood calcium and brittle bones because the body is taking
the calcium from the bones. The afflicted person will typically see an endocrinologist,
who studies hormones, and an orthopedist, who studies bones.
What do these two doctors have in common? - correct answer C. They both focus on
calcium levels.
\What is the main function of the central nervous system? - correct answer A.
coordinating simple reflexes
\Which best describes the top and bottom images of muscle contraction? - correct
answer B. The top image is in step 1, and the bottom image is in step 3.
\Which description applies to hinge joints? - correct answer D. allows for simple angular
movement
\Maintaining a healthy lifestyle through diet and exercise is important, - correct answer
D. but no specific diet has been proven to boost the immune system.
\Gunther touched a hot object and received a minor burn. How did the skeletal system
help prevent further damage? - correct answer A. The skeletal system helped him move
his hand away from the hot object.
\What is the main component of the thin filaments in muscle fibers and is responsible for
muscle contraction? - correct answer A. actin
\Staphylococcus aureus, or staph, is a bacteria that is commonly found in the nose and
on the skin of humans. While it is typically not harmful to humans, it is sometimes able
to enter the body through an injury or broken skin, and get into the bloodstream. When
this happens, it can cause a serious infection called sepsis. Sepsis can cause an
Exam With Correct Answers
Which level of organization falls directly after the tissue level when listed in order from
least to most complex? - correct answer D. organ
\When calcium levels in the blood are too low, the body releases a hormone that
removes calcium from the bones. A person who suffers from a certain type of thyroid
disease will often have low blood calcium and brittle bones because the body is taking
the calcium from the bones. The afflicted person will typically see an endocrinologist,
who studies hormones, and an orthopedist, who studies bones.
What do these two doctors have in common? - correct answer C. They both focus on
calcium levels.
\What is the main function of the central nervous system? - correct answer A.
coordinating simple reflexes
\Which best describes the top and bottom images of muscle contraction? - correct
answer B. The top image is in step 1, and the bottom image is in step 3.
\Which description applies to hinge joints? - correct answer D. allows for simple angular
movement
\Maintaining a healthy lifestyle through diet and exercise is important, - correct answer
D. but no specific diet has been proven to boost the immune system.
\Gunther touched a hot object and received a minor burn. How did the skeletal system
help prevent further damage? - correct answer A. The skeletal system helped him move
his hand away from the hot object.
\What is the main component of the thin filaments in muscle fibers and is responsible for
muscle contraction? - correct answer A. actin
\Staphylococcus aureus, or staph, is a bacteria that is commonly found in the nose and
on the skin of humans. While it is typically not harmful to humans, it is sometimes able
to enter the body through an injury or broken skin, and get into the bloodstream. When
this happens, it can cause a serious infection called sepsis. Sepsis can cause an
