Question

part c fill in each blank with the correct word or phrase from the word bank.
word bank
joints motor neurons nerve sense spinal cord

1. the central nervous system has two main parts, the brain and the
2. the ____ carry impulses from the brain and spinal cord to muscles and glands.
3. bones come together at ____.
4. the brain picks up many different messages from the ____ organs
5. the brain sends messages to other parts of the body through the ____ cells.

part d answer the following questions in complete sentences.

1. how do the nutrients in the food you eat reach the cells in your body?
2. what is the difference between bone and cartilage? give examples of each.

Explanation:

1. The central nervous system consists of the brain and spinal cord.
2. Motor neurons carry impulses from the brain and spinal cord to muscles and glands.
3. Bones meet at joints.
4. The brain receives messages from sense organs.
5. The brain sends messages through nerve cells.
6. Nutrients are absorbed in the small - intestine and then transported by the bloodstream to cells.
7. Bone is hard and rigid, like the femur. Cartilage is more flexible, like the earlobe or the tip of the nose.

Answer:

1. spinal cord
2. motor neurons
3. joints
4. sense
5. nerve
6. Nutrients are absorbed in the small intestine and then transported by the bloodstream to cells.
7. Bone is hard and rigid, e.g., femur. Cartilage is more flexible, e.g., earlobe or tip of the nose.