The Brain And The Nervous System
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Questions and Answers
- 1.
In the human body, the brain weighs about?
- A.
3 lbs
- B.
3 oz
- C.
15 g
- D.
15 lbs
- E.
1 lb
Correct Answer
A. 3 lbsExplanation
The correct answer is 3 lbs. The human brain weighs approximately 3 pounds. It is the most complex organ in the body and controls various functions such as thinking, memory, emotions, and bodily movements. Despite its relatively small size, the brain is responsible for coordinating and regulating the entire body's systems.Rate this question:
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- 2.
The three main parts of the brain are....
Correct Answer
cerebellum
Cerebrum
The brain stemExplanation
The three main parts of the brain are the cerebellum, cerebrum, and the brain stem. The cerebellum is responsible for coordinating movement, balance, and posture. The cerebrum is the largest part of the brain and controls voluntary actions, sensory perception, and higher cognitive functions such as thinking and problem-solving. The brain stem connects the brain to the spinal cord and controls basic functions like breathing, heart rate, and digestion. These three parts work together to ensure the proper functioning of the nervous system and the body as a whole.Rate this question:
- 3.
The central nervous system is divided into how many main parts?
- A.
3
- B.
4
- C.
2
- D.
6
Correct Answer
C. 2Explanation
The correct answer is 2 because the central nervous system consists of two main parts: the brain and the spinal cord. These two components work together to control and coordinate the functions of the body. The brain is responsible for processing information, making decisions, and sending signals to the rest of the body, while the spinal cord acts as a pathway for transmitting messages between the brain and the body's peripheral nervous system.Rate this question:
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- 4.
What are the two main parts of the central nervous system?
Correct Answer
the brain
the spinal cordExplanation
The central nervous system is composed of the brain and the spinal cord. The brain is the main control center of the body, responsible for processing and interpreting information from the senses, coordinating movement, and controlling bodily functions. The spinal cord, on the other hand, is a long bundle of nerves that transmits signals between the brain and the rest of the body. It acts as a pathway for sensory and motor information, allowing communication between the brain and the peripheral nervous system. Together, the brain and spinal cord play a crucial role in regulating and coordinating the body's functions.Rate this question:
- 5.
What system is responsible for sending, recieving and processing nerve impulses?
- A.
The skeletal System
- B.
The circulatory system
- C.
The Nervous System
- D.
The Digestive System
Correct Answer
C. The Nervous SystemExplanation
The nervous system is responsible for sending, receiving, and processing nerve impulses. It consists of the brain, spinal cord, and nerves that transmit signals throughout the body. This system controls and coordinates all bodily functions, allowing us to respond to stimuli, move our muscles, and process information. The skeletal system provides support and protection for the body, the circulatory system transports oxygen and nutrients, and the digestive system processes food. However, none of these systems are directly responsible for sending, receiving, and processing nerve impulses like the nervous system.Rate this question:
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- 6.
Which of the following is NOT a part of the brain?
- A.
Pituitary Gland
- B.
Cerebrum
- C.
Hypothalumus
- D.
Humerus
- E.
Ventricles
Correct Answer
D. HumerusExplanation
The humerus is not a part of the brain. It is a long bone located in the upper arm, connecting the shoulder to the elbow. The other options listed, such as the pituitary gland, cerebrum, hypothalamus, and ventricles, are all structures that are indeed part of the brain.Rate this question:
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- 7.
About how many neurons does the brain contain?
- A.
50 thousand
- B.
25
- C.
100 billion
- D.
1 million
- E.
Unknown
Correct Answer
C. 100 billionExplanation
The brain contains approximately 100 billion neurons. Neurons are specialized cells that transmit information throughout the nervous system. They are responsible for processing and transmitting electrical and chemical signals, allowing the brain to control various functions of the body. With such a vast number of neurons, the brain is able to perform complex tasks such as thinking, learning, and coordinating bodily movements.Rate this question:
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- 8.
Write down three interesting facts that you learned about the Nervous System
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