Body Systems test review
1. How are molecules, such as proteins, broken down into amino acids (the
components used by cells)?
a. The digestive system breaks food down in to the nutrients our cells need to
function. The first part is mechanical and the second part is chemical using
digestive enzymes to extract the nutrients our bodies need.
2. Which organ from the urinary system functions as an exit for wastes from the
body?
a. Waste is filtered by the kidneys, stored in the bladder, and exits the
urinary system through the urethra.
3. Which kind of circulation provides cells with oxygen, and through which blood
vessels does it provide it?
a. Pulmonary circulation provides our blood with oxygen and then is carried
through arteries back to the heart to be distributed to the rest of our body.
4. Which type of blood vessel allows for the exchange of gases between the blood
and body cells?
a. Capillaries allow for the exchange of gases and other nutrients between
our body cells and our blood.
5. Create a flow chart that represents the movement of Oxygen from in the
atmosphere to the cells inside your body.
a. Atmosphere – Lungs – Heart – Body
6. Give 3 examples that will correctly represent the levels of organization of cells,
tissue, organ, and organ system.
a. Muscle cell, muscle tissue, heart, cardiovascular system
b. Blood cell, Blood, Heart, cardiovascular system
c. Osteoblast, marrow, bone, skeletal system
7. Use 2 examples to describe how two organ systems work together.
a. Respiratory & Cardiovascular/Circulatory system work together to get the
oxygen needed by our cells
b. Digestive & Urinary system to break down and dispose of waste material
from our bodies
8. Which muscles contract in order move your arm and your leg forward?
a. Your skeletal muscles contract and allow for movement of our bodies.
9. What component of a skin cell is responsible for blocking ultraviolet rays?
a. Melanin helps block UV rays
10. What is the system that regulates other body systems and bodily functions by
secreting hormones into the blood?
a. The endocrine system
11. There are two organs that make up the central nervous system, what are they and
what is one of their jobs within your body?
a. The brain and spinal cord make up the central nervous system.
b. The brain is our body’s control center and the spinal cord is our nerves
direct pathway to our brain.
12. Describe the flow of stimuli between 2 nerve cells.
a. A signal travels along the axon from one nerve cell to the dendrites of
another nerve cell.
13. What roll does the peripheral nervous system play in the body?
a. It connects all parts of the body to the central nervous system.
14. Describe sexual and asexual reproduction and give an example of each form of
reproduction.
a. Sexual reproduction requires 2 parents, one male (sperm) and one female
(egg), the offspring is then a genetic combination of the 2 parents.
b. Asexual reproduction is 1 parent and the offspring is an identical
replication of the parent.
15. What happens to a cell inside a human body to allow for growth?
a. Cells inside a human body continue to grow and divide to allow for human
growth.