Anatomy of the Nervous System

Which two main parts make up the Central Nervous System?

• Brain and Heart

• Spinal Cord and Nerves

• Brain and Spinal Cord

• Ganglion and Nerves

Answer explanation

The correct answer is Brain and Spinal Cord, as these two main parts make up the Central Nervous System.

What is the Peripheral Nervous System composed of?

• Brain and Spinal Cord

• Ganglion and Nerves

• Brain and Nerves

• Spinal Cord and Ganglion

Answer explanation

The Peripheral Nervous System is composed of Ganglion and Nerves, not the Brain and Spinal Cord, Brain and Nerves, or Spinal Cord and Ganglion.

What are the functions of the nervous system?

• To transmit electrical and chemical impulses

• To provide structural support to the body

• To transport nutrients to cells

• To produce hormones

Answer explanation

The function of the nervous system is to transmit electrical and chemical impulses, making it the correct choice.

What can you describe about a neuron cell?

• Its digestive functions

• Its reproductive cycle

• The parts of a neuron cell and how they transmit impulses

• Its ability to photosynthesize

Answer explanation

The correct choice is describing the parts of a neuron cell and how they transmit impulses, which is the main function of a neuron cell.

How does the nervous system pass information between the external environment and the many parts of the body?

• Through the circulatory system

• Through the digestive tract

• Through the skeletal system

• Through electrical and chemical impulses

Answer explanation

The nervous system passes information between the external environment and the body through electrical and chemical impulses.

What can you compare and contrast in the nervous system?

• The central and peripheral nervous systems

• The respiratory and circulatory systems

• The digestive and excretory systems

• The muscular and skeletal systems

Answer explanation

The correct comparison and contrast in the nervous system can be done between the central and peripheral nervous systems.

What can you identify and explain about the brain?

• Different areas of the brain and their functions

• The number of bones in the brain

• The types of cells found in the liver

• The amount of blood the heart pumps

Answer explanation

The correct answer is to identify and explain different areas of the brain and their functions.

What is the nervous system?

• A) A system responsible for muscle contraction only.

• B) A physically connected network of cells, tissues, and organs that allow us to communicate with and react to the environment and perform life activities.

• C) A collection of bones and cartilages that provide structural support to the body.

• D) An independent network of cells that functions without interaction with the environment.

Answer explanation

The nervous system is a physically connected network of cells, tissues, and organs that allow us to communicate with and react to the environment and perform life activities, making option B the correct choice.

At what rate do neurons develop in a fetus in the womb?

• 250,000 per hour

• 250,000 per day

• 250,000 per minute

• 250,000 per second

Answer explanation

Neurons develop in a fetus at a rate of 250,000 per minute, making it the correct choice.

How many nerve cells do we have in our brain by adulthood?

• About 100 million

• About 100 billion

• About 100 thousand

• About 100

Answer explanation

By adulthood, the brain typically contains about 100 billion nerve cells, making the correct answer choice 'About 100 billion'.