| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
Which of the following represents the largest value?
1 ML |
|
1 mL |
|
1 kL |
|
1 cL |
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.
What part of the nervous system is responsible for controlling involuntary actions like breathing, swallowing, and heartbeat?
spinal cord |
|
cerebrum |
|
medulla |
|
cerebellum |
Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.
Which of the following is a decomposer?
pine tree |
|
ferret |
|
mosquito |
|
fungi |
Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.
The __________ nervous system controls voluntary actions.
peripheral |
|
autonomic |
|
somatic |
|
central |
Part of the peripheral nervous system, the somatic nervous system is made up of nerve fibers that send sensory information to the central nervous system and control voluntary actions.
Which part of the respiratory system helps protect against infection?
pharynx |
|
epiglottis |
|
nasal cavity |
|
trachea |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis, responsible for preventing food from entering the airway.