| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of these does not contain oxygenated blood?
aorta |
|
left ventricle |
|
right atrium |
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pulmonary vein |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
The brain and spinal cord make up the __________ nervous system.
central |
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autonomic |
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somatic |
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peripheral |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.
What part of the brain is responsible for for balance, movement, and muscle coordination?
cerebellum |
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brainstem |
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cerebrum |
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medulla |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebrum |
|
medulla |
|
brainstem |
|
cerebellum |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
Elements that belong to the same period in the Periodic Table of the Elements have the same number of:
atomic mass units |
|
protons |
|
electrons |
|
electron shells |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.